15 Best PC Power Supplies for Gaming, Compared
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Finding the best PC power supplies for gaming requires matching your components to the right wattage, efficiency, and connection standards. We compared 15 models based strictly on the specifications published on their listings.
The MSI MAG 850W Fully Modular ATX Power Supply leads because it provides ATX 3.1 support, a native 12V-2x6 PCIe 5.1 connector, and 80 Plus Gold efficiency. This guide helps you identify the proper wattage, form factor, and modular cabling setup for your graphics card and system hardware.
Quick picks
The best fit for you
- You build a modern rig using PCIe 5.1. MSI MAG 850W Fully Modular ATX Power Supply It provides ATX 3.1 support, 850W Gold efficiency, and a native 12V-2x6 connector.
- You assemble a compact Mini ITX gaming system. be quiet! SFX L 600W Gold Modular Power Supply Its Mini ITX form factor supplies 600W Gold output for space-constrained builds.
- You require maximum wattage for heavy gaming hardware. MSI MEG Ai1300P 1300W Platinum ATX 3.1 PSU It delivers 1300W of 80 Plus Platinum power with ATX 3.1 compliance.
Our 15 picks
MSI MAG 850W Fully Modular ATX Power Supply
Best for: modern ATX gaming builds using PCIe 5.1
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 850W
- Efficiency Rating
- 80+ Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
The MSI MAG 850W Fully Modular Power Supply is an ATX unit designed for gaming systems. It provides 850W of power with an 80 Plus Gold efficiency rating. The unit complies with ATX 3.1 and PCIe 5.1 specifications and features a native 12V-2x6 connector for graphics cards. Fully modular cabling lets you attach only necessary cables, reducing clutter. It suits builders needing current-generation GPU support.
Pros
- Native 12V-2x6 connector with ATX 3.1 and PCIe 5.1 compliance
- 80 Plus Gold efficiency rating
- Fully modular cable design
- 10-year manufacturer warranty
Cons
- 850W ceiling limits headroom for multi-GPU setups
- ATX casing does not fit compact SFX chassis
Good fit if
- You run a modern graphics card requiring a native 12V-2x6 connector.
- You want an 850W fully modular setup to minimize cable bulk.
- You seek long-term coverage via a 10-year warranty.
Skip if
- You require 1000W or higher capacity for high-draw hardware.
- You are assembling a small-form-factor build that requires an SFX power supply.
Verdict: MSI MAG 850W Fully Modular Power Supply delivers ATX 3.1 and PCIe 5.1 connectivity with 80 Plus Gold efficiency for 850W gaming systems. Its fully modular design and 10-year warranty make it a dependable foundation for modern builds.
MSI MAG ATX 3.0 Modular Power Supply
Best for: ATX 3.0 gaming builds with PCIe 5.0
- Recommended Use
- Gaming (what this guide is about)
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Full Modular
- ATX Version
- ATX 3.0
- PCIe Connector Type
- PCIe 5.0
- Fan Size
- 120mm
This MSI power supply provides ATX 3.0 compatibility and 80 Plus Gold efficiency for gaming setups. It features a fully modular cable layout with flat cables, an integrated PCIe 5.0 connector for graphics hardware, and a 120mm fluid dynamic bearing fan. The unit uses DC-to-DC modules with LLC full-bridge topology and six industrial-grade circuit protections. You will find it suitable for gaming systems needing native PCIe 5.0 power delivery.
Pros
- ATX 3.0 certified with native PCIe 5.0 connector
- 80 Plus Gold efficiency rating
- Fully modular design with flat cables
- 120mm fluid dynamic bearing cooling fan
- Comprehensive protections including OVP, OCP, OPP, OTP, SCP, and UVP
Cons
- Offered in renewed condition rather than factory new
- Uses a 120mm fan rather than a larger 135mm or 140mm unit
Good fit if
- You build a gaming system requiring native ATX 3.0 and PCIe 5.0 GPU support.
- You want flat, fully modular cables to simplify case airflow and management.
- You need 80 Plus Gold efficiency with LLC full-bridge and DC-to-DC topology.
Skip if
- You prefer a factory-new power supply instead of a renewed model.
- You require a power supply with a zero-RPM fan mode.
Verdict: MSI MAG ATX 3.0 Gold Power Supply delivers native PCIe 5.0 connectivity and 80 Plus Gold efficiency for dedicated gaming systems. The fully modular design and full electrical protection package provide straightforward cable routing and hardware safety.
Apevia Prestige 800W Gold ATX Power Supply
Best for: standard single-GPU gaming PC builds
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 800W
- Efficiency Rating
- 80+ Gold
- PCIe Connector Type
- 6+2pin
- Fan Size
- 135mm
- Warranty
- 3-year
The Apevia Prestige 800W delivers continuous power for mid-range gaming builds with an 80 Plus Gold efficiency rating. It features a single 12V rail design, DC-to-DC architecture, and an internal 135mm thermally controlled cooling fan. With two 6+2-pin PCIe power connectors, this ATX power supply suits you if you run a single-card gaming rig that does not require high-power PCIe 5.0 power connections.
Pros
- 80 Plus Gold certified efficiency
- DC-to-DC converter with single 12V rail design
- Large 135mm thermally controlled cooling fan
- Includes 7 SATA and 4 peripheral power connectors
Cons
- Only two 6+2-pin PCIe connectors provided
- Only one 4/8-pin 12V CPU power connector
- Lacks native 12VHPWR or PCIe 5.0 connectors
Good fit if
- You need an 800W 80 Plus Gold unit for a standard single-GPU gaming build.
- You use a graphics card requiring no more than two 8-pin PCIe power plugs.
Skip if
- You need a 16-pin 12VHPWR or PCIe 5.0 power connector for newer graphics cards.
- You require modular cables to minimize internal chassis clutter.
Verdict: Apevia Prestige 800W 80 Plus Gold Power Supply offers solid continuous output and DC-to-DC voltage stability for single-GPU gaming setups. Its two PCIe connectors and fixed cabling keep it best suited for straightforward configurations without high connector counts.
be quiet! SFX L 600W Gold Modular Power Supply
Best for: compact Mini ITX gaming systems
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 600W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Modular
- Fan Size
- 120mm
- Warranty
- 3-Year
View on Amazon: be quiet! SFX L 600W Gold Modular Power Supply
This be quiet! unit provides 600W of continuous power in a compact SFX-L form factor designed for Mini ITX gaming cases. It features an 80 PLUS Gold efficiency rating that reaches up to 92 percent efficiency under load. Fully modular cabling lets you connect only the cables your chassis requires, saving interior space. With four PCIe connectors and an included SFX-to-ATX bracket, it suits small-form-factor builds that require dedicated graphics card support.
Pros
- 80 PLUS Gold efficiency reaching up to 92%
- Fully modular cable design for clean routing
- Four PCIe connectors for graphics hardware
- Includes SFX-to-ATX adapter bracket for larger cases
Cons
- 600W maximum capacity limits high-wattage components
- Three-year warranty coverage is relatively brief
Good fit if
- You are building a gaming PC inside a space-constrained Mini ITX case.
- You require four PCIe power connectors for your graphics configuration.
- You want modular cables to reduce clutter in tight spaces.
Skip if
- You need more than 600W of total system power.
- You want a manufacturer warranty longer than three years.
Verdict: be quiet! SFX-L 600W Gold Modular Power Supply delivers 80 PLUS Gold efficiency and four PCIe connectors in a compact Mini ITX form factor. It is a practical fit for small-chassis gaming setups running within a 600W limit.
Formulamod 11.8-Inch Sleeved PSU Cable Extension Kit
Best for: clean cable routing in ATX gaming builds
- Recommended Use
- Gaming (what this guide is about)
- Form Factor
- ATX
View on Amazon: Formulamod 11.8-Inch Sleeved PSU Cable Extension Kit
This set is an 11.8-inch sleeved cable extension kit rather than a standalone power supply. It includes 18AWG copper wiring with a 24-pin ATX connector, an 8-pin EPS lead, and dual 6+2-pin PCI-E leads for graphics cards. Built with a pre-bent, heat-shrink-free design, it connects directly to your existing standard ATX power unit cables to tidy gaming setups.
Pros
- Includes 24-pin ATX, 8-pin EPS, and dual 6+2-pin PCI-E cables
- Built with 18AWG copper wires and individual sleeving
- Pre-bent structure with heat-shrink-free construction
- Offered in 8 different color variations
Cons
- Requires existing PSU cables and cannot supply power independently
- Fixed 11.8-inch length adds extra wire length inside the case
Good fit if
- You need 11.8-inch extensions to route standard ATX, EPS, and PCI-E connections.
- You want sleeved 18AWG cables with a pre-bent, heat-shrink-free design.
Skip if
- You need a standalone power supply unit to power your system.
- You do not have room behind your motherboard tray for added cable length.
Verdict: Formulamod 18AWG Sleeved PSU Cable Extension Kit provides pre-shaped 18AWG routing leads for standard ATX builds without replacing your base power unit.
ASUS ROG Thor Platinum III 1200W PSU
Best for: high-end gaming systems needing OLED power monitoring
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 1200W
- Efficiency Rating
- 80 PLUS Platinum
- Modularity
- Modular
- ATX Version
- ATX 3.1
- Warranty
- 10-year
The ASUS ROG Thor Platinum III 1200W Modular PSU is a high-capacity power supply engineered for demanding gaming rigs. It delivers 1200 watts with 80 PLUS Platinum efficiency and meets the ATX 3.1 standard for modern hardware demands. You get fully modular etched cabling, GaN MOSFET components, and a swappable magnetic OLED display tracking real-time power draw. It suits you if your setup demands top-tier output and hardware-level monitoring.
Pros
- 80 PLUS Platinum efficiency with GaN MOSFET design
- Magnetic OLED display shows real-time system power draw
- ATX 3.1 compliant and PCIe 5.0 ready
- 10-year warranty coverage
Cons
- Long 7.48-inch chassis requires ample case clearance
- Heavy 5.22-pound total unit weight
Good fit if
- You need 1200W of 80 PLUS Platinum power for an ATX 3.1 gaming build.
- You want real-time wattage tracking visible directly on the power supply chassis.
- You have an ATX case with clearance for a 7.48-inch long power supply.
Skip if
- You are assembling a compact PC case unable to house a 7.48-inch long unit.
- You only require a standard 600W to 850W power supply for your components.
Verdict: ASUS ROG Thor Platinum III 1200W Modular PSU delivers high wattage and 80 PLUS Platinum efficiency alongside ATX 3.1 compliance and a built-in magnetic OLED power display. It provides a heavy-duty power foundation for modern gaming hardware with specialized GPU voltage sensing.
Apevia Signature 900W Semi-Modular ATX PSU
Best for: gaming rigs requiring 900W with standard PCIe
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 900W
- Efficiency Rating
- 80+ Bronze
- Modularity
- Semi-Modular
- ATX Version
- ATX 12V 2.3
- PCIe Connector Type
- 8(6+2)pin PCI-E
The Apevia Signature 900W Semi-Modular PSU delivers 900W of total output with 80 Plus Bronze efficiency for gaming rigs. You get a semi-modular cable layout to reduce case clutter, paired with a single +12V rail rated at 66A. Its thermally controlled 135mm blue LED fan manages cooling during loads. This unit suits you if you need high wattage and four 8-pin PCI-E connectors.
Pros
- 900W capacity with a 66A single +12V rail
- Semi-modular cabling allows removal of unused peripheral leads
- Four 8(6+2)pin PCI-E connectors for multi-GPU support
- Thermally controlled 135mm blue LED cooling fan
Cons
- Uses older ATX 12V 2.3 standard without 12VHPWR connectors
- 80 Plus Bronze efficiency is lower than Gold-tier units
- Includes only four SATA power connectors
Good fit if
- You need 900W of power on an ATX 12V 2.3 layout.
- You run graphics cards requiring standard 8(6+2)pin PCI-E power.
- You want semi-modular cabling with integrated blue LED fan lighting.
Skip if
- You require a native 12VHPWR cable for modern graphics cards.
- You want higher electrical efficiency than 80 Plus Bronze.
- You need more than four SATA power connections for drives.
Verdict: Apevia Signature 900W Semi-Modular PSU provides heavy single-rail power and four 8-pin PCI-E connections for high-draw gaming components. It trades newer ATX 3.0 standards and higher efficiency ratings for pure 900W Bronze output.
Apevia Essence 700W Semi-Modular PSU
Best for: mid-range gaming builds with dual PCIe connectors
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 700W
- Modularity
- Semi-Modular
- PCIe Connector Type
- 6+2 pin
- Fan Size
- 120mm
- Form Factor
- ATX
The Apevia Essence 700W is a semi-modular ATX power supply designed for mainstream gaming systems. It provides 700 watts of total output with a single 53-amp 12-volt rail to run your graphics card and processor. A thermally controlled 120mm fan cools the unit during gaming loads. It includes two 6+2-pin PCIe connectors and four SATA connections. This unit suits you if you build a standard dual-cable gaming PC.
Pros
- Single +12V rail delivering up to 53A of output
- Semi-modular cable design reduces interior clutter
- Six integrated protections covering OVP, UVP, OCP, OPP, SCP, and OTP
- Thermally controlled 120mm cooling fan
Cons
- Only two 6+2-pin PCIe connectors and no native 12VHPWR connector
- Single 4+4-pin CPU connector limits multi-plug motherboards
- No official 80 PLUS efficiency certification listed
Good fit if
- You need 700W of total power with up to 53A on the +12V rail.
- You use a graphics card requiring no more than two 8-pin or 6-pin PCIe cables.
- You want detachable peripheral cables to simplify routing inside an ATX case.
Skip if
- You need a 16-pin 12VHPWR cable for newer high-power graphics cards.
- You require dual 8-pin EPS connections for your motherboard CPU power.
- You prefer a fully modular unit where every harness is detachable.
Verdict: Apevia Essence 700W Semi-Modular PSU delivers 53A on a single +12V rail with essential semi-modular cabling for standard gaming setups. It handles mainstream hardware cleanly as long as you do not need modern 16-pin GPU connectors or dual CPU plugs.
Apevia Essence 600W Semi-Modular PSU
Best for: mid-range gaming builds with standard PCIe connections
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 600W
- Modularity
- Semi-Modular
- PCIe Connector Type
- 6+2 pin
- Fan Size
- 120mm
- Form Factor
- ATX
The Apevia Essence 600W Semi-Modular Power Supply delivers 600 watts of power across a single 45A 12V rail for gaming systems. It features semi-modular cabling, an auto-thermally controlled 120mm fan, and two 6+2-pin PCIe connectors for graphics cards. Built-in safeguards protect against short circuits, over-current, over-voltage, and high temperatures. This unit suits you if you need a basic gaming supply for modest hardware setups.
Pros
- Semi-modular cabling helps reduce case clutter
- Single +12V rail provides up to 45A of power
- Auto-thermally controlled 120mm cooling fan
- Comprehensive protection suite including OVP, OCP, UVP, OPP, OTP, and SCP
Cons
- Limited to two 6+2-pin PCIe connectors with no 12VHPWR support
- Single 4+4-pin CPU connector restricts dual-EPS motherboards
- No 80 Plus efficiency certification listed in specifications
Good fit if
- You run a mid-tier graphics card using one or two 6+2-pin PCIe power inputs.
- You prefer detachable peripheral cables to keep case airflow clear.
- You need standard ATX hardware with essential electrical safeguards.
Skip if
- You require dedicated PCIe 5.0 or 12VHPWR connectors for high-end GPUs.
- You use an enthusiast motherboard needing dual 8-pin CPU connections.
- You require an official 80 Plus energy efficiency rating.
Verdict: Apevia Essence 600W Semi-Modular Power Supply offers sensible semi-modular cabling, a 45A 12V rail, and multi-layer circuit protection for modest gaming rigs. It provides essential power delivery as long as your hardware does not demand dual EPS ports or high-wattage PCIe 5.0 lines.
Apevia Galaxy 1000W 80+ Gold Semi-Modular PSU
Best for: High-wattage gaming rigs using standard PCIe cables
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 1000W
- Efficiency Rating
- 80+ Gold
- Modularity
- Semi-Modular
- ATX Version
- ATX 12V 2.3
- PCIe Connector Type
- 6+2 pin
View on Amazon: Apevia Galaxy 1000W 80+ Gold Semi-Modular PSU
The Apevia Galaxy 1000W Semi-Modular PSU delivers 1000 watts of continuous output with an 80 Plus Gold efficiency certification. It features a single +12V rail rated at 83.3 amps, an auto-controlled 135mm cooling fan, and four 6+2-pin PCIe power connectors. This semi-modular supply suits high-draw gaming builds using standard PCIe graphics cards, giving you substantial overhead without the footprint of newer native 12VHPWR cabling.
Pros
- 1000W output with an 83.3A single +12V rail
- 80 Plus Gold efficiency certification
- Auto-thermally controlled 135mm cooling fan
- Four 8-pin (6+2) PCIe power connectors
Cons
- Lacks PCIe 5.0 and 12VHPWR connectors
- Semi-modular design with fixed essential cables
- Uses older ATX 12V 2.3 specification
Good fit if
- You need 1000W capacity for standard 8-pin PCIe graphics cards.
- You want 80 Plus Gold efficiency paired with a 135mm cooling fan.
Skip if
- You need a native 12VHPWR cable for newer PCIe 5.0 graphics cards.
- You want a fully modular power supply where all cables detach.
Verdict: Apevia Galaxy 1000W Semi-Modular PSU provides heavy-duty power and 80 Plus Gold efficiency for traditional multi-cable gaming setups. It lacks PCIe 5.0 connectivity, making it best for systems using standard 8-pin PCIe power.
Apevia Premier 850W Gold Semi-Modular PSU
Best for: standard gaming builds using 8-pin PCIe GPUs
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 850W
- Efficiency Rating
- 80+ Gold
- Modularity
- Semi-Modular
- ATX Version
- ATX 12V 2.3
- PCIe Connector Type
- 6+2 pin
The Apevia Premier 850W Semi-Modular RGB PSU supplies 850 watts of power with 80 Plus Gold efficiency. Built on the ATX 12V 2.3 standard, it features an auto-thermally controlled 135mm RGB fan offering 366 lighting modes. It delivers up to 83.3A on a single +12V rail and includes four 8-pin PCIe connectors. You will find it suits standard gaming setups using traditional PCIe graphics cards rather than newer PCIe 5.0 hardware.
Pros
- 80 Plus Gold efficiency rating
- 850W output with 83.3A single +12V rail
- 135mm thermally controlled fan with 366 RGB modes
- Four 6+2 pin PCIe connectors
Cons
- No PCIe 5.0 or 12VHPWR connector included
- Based on older ATX 12V 2.3 standard
- Semi-modular design leaves core cables fixed
Good fit if
- You need an 850W 80 Plus Gold unit with standard 8-pin PCIe power cables.
- You want built-in RGB lighting controlled directly via a 135mm thermal fan.
Skip if
- You require native 12VHPWR or PCIe 5.0 cables for modern graphics cards.
- You want a fully modular power supply to detach every cable.
Verdict: Apevia Premier 850W Semi-Modular RGB PSU delivers solid 80 Plus Gold power and onboard lighting for conventional desktop setups. Its lack of PCIe 5.0 support means you must look elsewhere for modern 12VHPWR hardware.
GAMEMAX 1050W ARGB Fully Modular PSU
Best for: High-wattage gaming builds wanting synchronized ARGB lighting
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 1050W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.0
- PCIe Connector Type
- 12VHPWR 16pin
The GAMEMAX ARGB Pro 1050W ATX 3.0 Power Supply delivers high-capacity output for demanding gaming rigs. You get a dedicated 16-pin 12VHPWR connector delivering up to 600W to PCIe 5.0 graphics cards, an 80 Plus Gold efficiency rating, and fully modular cabling. It suits you if you need substantial wattage headroom and integrated ARGB lighting for your build.
Pros
- 1050W output with 80 Plus Gold efficiency
- Dedicated 16-pin 12VHPWR connector provides up to 600W for PCIe 5.0 GPUs
- Fully modular cable design
- ARGB lighting supports motherboard sync and 25 modes
- 140mm hydraulic bearing cooling fan
Cons
- 6.61-inch length requires more chassis depth than standard compact ATX units
- 80 Plus Gold efficiency rather than Platinum or Titanium
Good fit if
- You need 1050W of power and a native 600W 12VHPWR connector for a modern graphics card.
- You want addressable RGB lighting synchronized with your motherboard software.
- You prefer fully modular cables to keep your case interior organized.
Skip if
- You have a small-form-factor case that cannot accommodate a 6.61-inch ATX unit.
- You prefer a non-illuminated power supply for a blackout build.
Verdict: GAMEMAX ARGB Pro 1050W ATX 3.0 Power Supply provides reliable high-wattage power, modern ATX 3.0 connectivity, and integrated lighting for standard gaming cases. It delivers the current headroom and modular flexibility needed for high-demand hardware.
NZXT C1000 1000W Gold Fully Modular PSU
Best for: high-wattage ATX gaming setups
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 1000W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- Form Factor
- ATX
- Dimensions
- 4 × 4 × 6 inches
The NZXT C1000 is an ATX gaming power supply delivering 1000 watts of power with 80 Plus Gold efficiency. It features a fully modular layout with black sleeved cables, allowing you to connect only the wiring your system requires. Built with an internal microcontroller protection mechanism to monitor voltage and current, this unit suits you if you run high-demand components like NVIDIA 30 series or AMD 6000 series graphics cards.
Pros
- 1000W total output capacity
- 80 Plus Gold efficiency rating
- Fully modular design with black sleeved cables
- Microcontroller protection monitors current, voltage, and wattage
Cons
- GPU support explicitly stated only up to NVIDIA 30 series and AMD 6000 series
- Cable compatibility restricted to specific NZXT PA-series models
Good fit if
- You need 1000W of power for gaming setups with high-demand hardware.
- You want fully modular sleeved cables to keep internal case wiring clean.
Skip if
- You require native ATX 3.1 or PCIe 5.0 power connections.
- You need a lower-wattage unit for an entry-level build.
Verdict: NZXT C1000 1000W 80+ Gold Modular PSU delivers high-wattage power and full modularity for gaming setups. Its built-in microcontroller monitoring maintains stable current across demanding PC components.
MSI MEG Ai1300P 1300W Platinum ATX 3.1 PSU
Best for: Ultra-high-end gaming rigs needing maximum power
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 1300W
- Efficiency Rating
- 80 Plus Platinum
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1, ATX 3.0
- PCIe Connector Type
- 12V-2x6
The MSI MEG Ai1300P is a fully modular ATX power supply designed for high-demand gaming systems. You get a massive 1300W power output paired with 80 Plus Platinum efficiency and 100% Japanese 105°C capacitors. It includes native ATX 3.1 support and a dedicated 12V-2x6 connector for Nvidia GeForce RTX 40 Series graphics cards. This unit suits you if you run flagship hardware needing high wattage.
Pros
- 1300W capacity handles high-end gaming hardware
- 80 Plus Platinum efficiency reduces power loss
- Native 12V-2x6 connector for PCIe 5.1 and ATX 3.1 setups
- All 105°C Japanese capacitors
- 10-year manufacturer warranty
Cons
- 1300W output is excessive for mid-range gaming builds
- Larger footprint than compact ATX units
Good fit if
- You run power-heavy components like Nvidia RTX 40 Series graphics cards.
- You want an 80 Plus Platinum unit with fully modular cabling.
- You need ATX 3.1 and PCIe 5.1 compliance with a native 12V-2x6 connector.
Skip if
- You build a mid-range PC requiring well under 1000W.
- You need a compact SFX power supply for small-form-factor cases.
Verdict: MSI MEG Ai1300P 1300W Platinum ATX 3.1 PSU provides high-wattage Platinum power and native 12V-2x6 support for demanding gaming rigs. Its 10-year warranty and Japanese capacitors ensure long-term stability for top-tier components.
MSI MPG 850W Gold ATX 3.1 Power Supply
Best for: 850W gaming PCs needing PCIe 5.1 support
- Recommended Use
- Gaming (what this guide is about)
- Wattage
- 850W
- Efficiency Rating
- 80+ Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
The MSI MPG 850W ATX 3.1 Power Supply is an ATX gaming power unit built for modern hardware. It delivers 850 watts of output with 80 Plus Gold efficiency and full modularity to keep your case tidy. It features ATX 3.1 compliance, PCIe 5.1 support, and a dedicated 12V-2x6 connector for new graphics cards. This unit suits you if you run a standard gaming rig and want reliable Japanese capacitors with a 10-year warranty.
Pros
- Native 12V-2x6 connector with PCIe 5.1 and ATX 3.1 compliance
- 80 Plus Gold certified efficiency
- Fully modular cabling design
- 100% Japanese 105°C capacitors
- 10-year limited warranty
Cons
- 850W output limits capacity for dual-GPU configurations
- Standard ATX casing does not fit dedicated SFX-only enclosures
Good fit if
- You need a native 12V-2x6 connector for a PCIe 5.1 graphics card.
- You want fully modular cables and 80 Plus Gold efficiency at 850 watts.
- You prioritize Japanese capacitors backed by a 10-year warranty.
Skip if
- You require 1000W or higher for high-draw hardware configurations.
- You build in an ultra-compact chassis requiring an SFX power supply.
Verdict: MSI MPG 850W ATX 3.1 Power Supply delivers modern PCIe 5.1 connectivity, Japanese capacitors, and 80 Plus Gold efficiency for high-end gaming builds. It gives you reliable 850W power backed by a 10-year warranty.
Specifications side by side
| Spec | MSI MAG 850W Fully Modular ATX Power Supply | MSI MAG ATX 3.0 Modular Power Supply | Apevia Prestige 800W Gold ATX Power Supply | be quiet! SFX L 600W Gold Modular Power Supply | Formulamod 11.8-Inch Sleeved PSU Cable Extension Kit | ASUS ROG Thor Platinum III 1200W PSU | Apevia Signature 900W Semi-Modular ATX PSU | Apevia Essence 700W Semi-Modular PSU | Apevia Essence 600W Semi-Modular PSU | Apevia Galaxy 1000W 80+ Gold Semi-Modular PSU | Apevia Premier 850W Gold Semi-Modular PSU | GAMEMAX 1050W ARGB Fully Modular PSU | NZXT C1000 1000W Gold Fully Modular PSU | MSI MEG Ai1300P 1300W Platinum ATX 3.1 PSU | MSI MPG 850W Gold ATX 3.1 Power Supply |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wattage | 850W | not specified | 800W | 600W | not specified | 1200W | 900W | 700W | 600W | 1000W | 850W | 1050W | 1000W | 1300W | 850W |
| Efficiency Rating | 80+ Gold | 80 Plus Gold | 80+ Gold | 80 PLUS Gold | not specified | 80 PLUS Platinum | 80+ Bronze | not specified | not specified | 80+ Gold | 80+ Gold | 80 Plus Gold | 80 Plus Gold | 80 Plus Platinum | 80+ Gold |
| Modularity | Fully Modular | Full Modular | not specified | Modular | not specified | Modular | Semi-Modular | Semi-Modular | Semi-Modular | Semi-Modular | Semi-Modular | Fully Modular | Fully Modular | Fully Modular | Fully Modular |
| ATX Version | ATX 3.1 | ATX 3.0 | not specified | not specified | not specified | ATX 3.1 | ATX 12V 2.3 | not specified | not specified | ATX 12V 2.3 | ATX 12V 2.3 | ATX 3.0 | not specified | ATX 3.1, ATX 3.0 | ATX 3.1 |
| PCIe Connector Type | 12V-2x6 | PCIe 5.0 | 6+2pin | not specified | not specified | not specified | 8(6+2)pin PCI-E | 6+2 pin | 6+2 pin | 6+2 pin | 6+2 pin | 12VHPWR 16pin | not specified | 12V-2x6 | 12V-2x6 |
| Fan Size | not specified | 120mm | 135mm | 120mm | not specified | not specified | 135mm | 120mm | 120mm | 135mm | 135mm | 140mm | not specified | not specified | not specified |
| Warranty | 10 Year | not specified | 3-year | 3-Year | not specified | 10-year | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 10 Year | 10 Year |
| Form Factor | ATX | ATX | ATX | Mini ITX | ATX | ATX | ATX | ATX | ATX | ATX | ATX | ATX | ATX | ATX | ATX |
| PCIe Version | PCIe 5.1 | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | PCIe 5.1 | PCIe 5.1 |
| Recommended Use | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming | Gaming |
| Connector | 12V-2x6 Connector | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 12V-2x6 Connector | 12V-2x6 Connector |
| Power Factor Correction | not specified | not specified | Active PFC | not specified | not specified | not specified | not specified | not specified | not specified | Active PFC | Active PFC | not specified | not specified | not specified | not specified |
| Size | 850W (PCIE 5) | not specified | 800W | 600W | 11.8 inches | not specified | not specified | not specified | not specified | 1000W No PCIe 5.0 | 850W Semi-Modular Gold | ARGB PRO SERIES | 80 Plus Gold | 1300W | 850W |
| Dimensions | 12 × 8.75 × 4.92 inches | 11.8 × 7.9 × 3.9 inches | 6.2 × 5.9 × 3.4 inches | 5.12 × 4.92 × 2.52 inches | not specified | 7.48 × 5.91 × 3.39 inches | 6.2 × 5.9 × 3.4 inches | 5.9 × 6.3 × 3.4 inches | 6.3 × 5.91 × 3.35 inches | 6.2 × 5.9 × 3.4 inches | 6.2 × 5.9 × 3.4 inches | 6.61 × 5.91 × 3.35 inches | 4 × 4 × 6 inches | 8.27 × 6.18 × 12.9 inches | 5.91 × 5.91 × 3.39 inches |
| Weight | not specified | 3.97 pounds | 4.7 pounds | 2.56 pounds | not specified | 5.22 pounds | not specified | 4.25 pounds | 4.12 pounds | not specified | not specified | 3.53 pounds | 7.47 pounds | 3.31 pounds | 7.15 pounds |
| Model | not specified | not specified | ATX-RP800W | BN639 | Fm-NCK3 | 90YE00V2-B0NA00 | SIGNATURE900W | ATX-ES700W | ATX-ES600W | ATX-GX1000W | ATX-PM850W | GMX-RGB-1050PRO | PA-0G1BB-UK | 306-7ZP4A11-CE0 | MPG A850G PCIE 5 |
| Color | not specified | not specified | not specified | Black | Black Grey Purple | Black & Grey | not specified | not specified | not specified | not specified | not specified | not specified | Black | not specified | not specified |
Is a gaming-designated power supply worth it?
A gaming recommendation indicates hardware built for dedicated graphics cards and sustained component loads. On these spec sheets, gaming models provide wattages from 600W to 1300W, high-amperage +12V rails, and multiple PCIe or 12V-2x6 connections. They use Active PFC, DC-to-DC voltage stability, and 80 Plus Bronze, Gold, or Platinum efficiency. Choosing a gaming unit ensures your system has the dedicated connectors, rail amperage, and continuous delivery required for discrete desktop graphics cards instead of basic office hardware.
Worth it if
- You run a dedicated graphics card requiring multiple 8-pin PCIe cables or a 12V-2x6 line.
- You need continuous output between 600W and 1300W with 80 Plus Bronze, Gold, or Platinum efficiency.
- You require single +12V rail delivery reaching 45A to 53A for demanding hardware components.
Skip it if
- You assemble an office desktop that relies solely on integrated graphics and requires under 600W.
- You do not require supplemental PCIe or high-amperage 12V power cables for add-in cards.
To ensure your power supply length fits your chassis, compare clearance specifications listed for the best PC cases for gaming.
How We Picked Gaming PSUs
Every power supply in this guide is selected when its title or feature list states gaming as the recommended use. Only one size or variant per product family is included. All details come strictly from published specifications, without physical testing.
The 15 products are ordered with products in stock first, then by Amazon sales rank, placing better-selling products first. You can compare each unit through published specifications, including form factor, wattage, modularity, ATX standards, and 80 Plus efficiency to find the right match for your gaming build.
How to Choose the Best Gaming Power Supply
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Select the Right Form Factor
Check your computer case specifications before selecting a power supply form factor. Standard desktop gaming cases use ATX power supplies, which fit standard mounting brackets and offer ample interior clearance. If you build inside a compact small-form-factor chassis, a standard ATX unit will not fit. You need a smaller standard like SFX-L. The be quiet! SFX L 600W Gold Modular Power Supply measures 4.92 inches wide and 2.52 inches high, making it suitable for Mini ITX builds. Always verify the maximum clearance length inside your PC case.
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Evaluate Cable Modularity Types
Examine how cables attach to the power supply to simplify your installation. Fully modular units let you detach every lead, which simplifies cable management and reduces clutter inside the chassis. Semi-modular models come with essential motherboard and CPU leads hardwired, while peripheral and graphics cables remain detachable. The Apevia Signature 900W Semi-Modular ATX PSU uses this layout, balancing cable flexibility with permanent core wiring. Non-modular power supplies have all cables permanently attached. Choose fully modular or semi-modular models if your chassis has limited space behind the motherboard tray for excess cabling.
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Compare 80 Plus Efficiency
Look at the 80 Plus efficiency certification on the specification sheet. This rating indicates how effectively the unit converts wall power into direct current without wasting excess electricity as heat. Common levels include 80 Plus Bronze, 80 Plus Gold, and 80 Plus Platinum. Higher levels waste less energy under load. The ASUS ROG Thor Platinum III 1200W PSU carries an 80 Plus Platinum certification, providing higher energy efficiency for demanding gaming hardware. If you run long gaming sessions daily, selecting Gold or Platinum helps minimize heat buildup inside your case.
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Calculate Required Wattage Capacity
Calculate the continuous wattage your graphics card and processor demand under full load. Gaming hardware requires sufficient overhead to handle sudden peak power draws without triggering shutdown protections. Mid-range gaming rigs generally operate reliably on 600W to 850W units. Flagship hardware pairings and multi-drive setups benefit from higher capacities. The MSI MEG Ai1300P 1300W Platinum ATX 3.1 PSU provides 1300W of total output for heavy-duty gaming hardware. Compare the manufacturer recommendations for your specific graphics card, then add at least 150W of continuous buffer to determine your required wattage.
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Check +12V Rail Current Output
Review the amperage rating on the +12V rail in the electrical specifications. Modern gaming computers draw almost all their power for the processor and dedicated graphics card through the +12V rail. A power supply might advertise high total wattage, but you must ensure the +12V rail delivers sufficient current for your components. The Apevia Essence 700W Semi-Modular PSU specifies 53A on its single +12V rail. Multiply the rated rail amperage by 12 to verify the usable wattage matches the power demands of your core graphics and processor components.
Frequently asked questions
What is the difference between fully modular and semi-modular power supplies?
A fully modular power supply lets you detach every single cable, while a semi-modular unit permanently attaches essential leads like the main motherboard cable. Units such as the GAMEMAX 1050W and NZXT C1000 are fully modular, allowing you to connect only the lines your components require. Semi-modular models like the Apevia Essence 700W keep basic cables fixed while leaving auxiliary graphics card and peripheral cables optional for easier routing.
Are sleeved cable extension kits universal across different power supply brands?
Yes, standard sleeved extension kits attach directly to the ends of your existing cables rather than plugging into the power supply housing. The Formulamod 11.8-inch extension kit uses 18AWG wiring to extend standard ATX leads from your base power unit. Because you do not replace the proprietary cables connected directly to your power supply, extensions maintain universal compatibility while allowing cleaner routing across standard desktop cases.
What does an 80 Plus Platinum efficiency rating provide over 80 Plus Gold?
An 80 Plus Platinum rating guarantees less energy is wasted as heat during electrical conversion compared to an 80 Plus Gold unit. In gaming systems, supplies like the ASUS ROG Thor Platinum III 1200W and MSI MEG Ai1300P deliver Platinum-level conversion efficiency under load. This reduced energy waste helps lower internal case temperatures, whereas 80 Plus Gold models like the Apevia Galaxy 1000W run slightly warmer during peak output.
What is the purpose of an OLED display on a power supply?
An integrated OLED display shows real-time system power consumption directly on the exterior casing of the power supply. On the ASUS ROG Thor Platinum III 1200W, the built-in magnetic OLED screen provides live power monitoring to help you observe watt draw during gaming sessions. This visual readout lets you track electrical consumption instantly without needing secondary desktop monitoring software or external power meters connected to your wall outlet.
When do you need a 1000W or higher power supply for gaming?
You need a 1000W or larger unit when running top-tier gaming hardware paired with multiple high-draw PC components. Units like the GAMEMAX 1050W, NZXT C1000, and MSI MEG Ai1300P provide ample wattage headroom and dedicated high-amperage lines for demanding systems. Selecting 1000W to 1300W ensures your configuration handles sustained heavy graphics processing without overloading power rails, whereas standard single-GPU configurations typically operate comfortably on 600W to 850W units.
How do you know if a power supply fits a compact Mini ITX case?
You must check the form factor specifications against the mounting dimensions listed in your PC case manual. Compact systems often require an SFX-L or Mini ITX power supply, such as the be quiet! SFX L 600W Gold model, which measures 4.92 inches wide and 2.52 inches high. Standard ATX power supplies measure significantly larger and will not physically slide into tight Mini ITX chassis compartments designed strictly for reduced-profile units.
What should you check if your gaming graphics card uses standard 8-pin PCIe cables?
You should verify the total number of physical 8-pin PCIe connectors bundled with the power supply. Models such as the Apevia Signature 900W supply four 8-pin PCIe connections, while the Apevia Prestige 800W provides two PCIe connectors. Checking connector counts ensures you can power conventional graphics cards directly without needing adapter cables, especially if your power supply does not include newer 16-pin 12V-2x6 or PCIe 5.0 connectors.