Best 80 Plus Gold PC Power Supplies: 15 Spec-Based Picks
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An 80 Plus Gold PC power supply provides high electrical efficiency and dependable power regulation for your computer. To find the right match, we compared 15 models based on the specifications published on the listings.
The MSI MAG 850W Fully Modular ATX Power Supply takes the top position because its ATX 3.1 design and PCIe 5.1 12V-2x6 connector support modern hardware demands. This guide helps you choose the correct wattage, case form factor, and cable modularity for your system.
Quick picks
The best fit for you
- You need ATX 3.1 support with a 12V-2x6 connector. MSI MAG 850W Fully Modular ATX Power Supply It features ATX 3.1 compliance, PCIe 5.1 compatibility, and a dedicated 12V-2x6 connector for modern graphics cards.
- You run an extreme multi-GPU workstation or gaming rig. EVGA SuperNOVA 1600W Fully Modular PSU It delivers 1600W output with fully modular cabling and a 10-year warranty for high-load hardware.
- You build a compact Mini ITX or NAS system. FSP 400W Gold Flex ATX Mini ITX Power Supply Its Mini ITX form factor measures 1.6 inches wide to fit compact enclosures.
- You want a white power supply with side cables. Corsair RM850x Shift 850W White ATX Power Supply It features a white finish, side-panel modular connections, and ATX 3.1 support at 850W.
Our 15 picks
MSI MAG 850W Fully Modular ATX Power Supply
Best for: modern PCIe 5.1 gaming systems
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 850W
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Warranty
- 10 Year
View on Amazon: MSI MAG 850W Fully Modular ATX Power Supply (paid link)
This power supply delivers up to 850 watts with an 80 Plus Gold efficiency rating. Built to ATX 3.1 and PCIe 5.1 standards, it includes a dedicated 12V-2x6 connector for high-draw graphics cards. Its fully modular design allows you to connect only the necessary cables, reducing interior clutter in your case. Backed by a 10-year warranty, it suits modern gaming builds that require stable power and clean cable routing.
Pros
- 80 Plus Gold efficiency rating
- Native 12V-2x6 PCIe 5.1 connector
- Compliant with ATX 3.1 specifications
- Fully modular cable configuration
- 10-year manufacturer warranty
Cons
- 850W ceiling excludes high-wattage dual-GPU rigs
- Standard ATX footprint does not fit SFX cases
Good fit if
- You need a dedicated 12V-2x6 connector for modern graphics cards.
- You build a gaming system requiring up to 850 watts.
- You prefer modular cables to minimize interior clutter.
Skip if
- You need a power supply exceeding 850 watts.
- You build inside a compact mini-ITX case requiring SFX units.
Verdict: MSI 850W Fully Modular ATX 3.1 Power Supply delivers PCIe 5.1 support and 80 Plus Gold efficiency for modern gaming builds. Its fully modular cabling and 10-year warranty provide a clean, reliable setup.
Corsair RM1000e 1000W ATX Power Supply
Best for: high-power ATX builds needing fully modular cabling
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 1000 Watt
- Modularity
- Fully Modular
- Form Factor
- ATX
- Size
- 1000W
- Dimensions
- 5.91 × 5.51 × 3.39 inches
View on Amazon: Corsair RM1000e 1000W ATX Power Supply (paid link)
This unit is a 1000W ATX power supply featuring an 80 Plus Gold efficiency certification and fully modular cabling. Built with 105°C-rated capacitors and dual EPS12V connectors, it delivers power to demanding components while allowing you to connect only the cables you need. Its black casing measures under six inches in length. It suits you if you are assembling a high-draw system requiring standard ATX dimensions.
Pros
- 1000W capacity with 80 Plus Gold efficiency
- Fully modular cable configuration
- Equipped with dual EPS12V connectors
- Constructed with 105°C-rated capacitors
Cons
- Standard ATX form factor does not fit compact SFX enclosures
- Available only in a black finish
Good fit if
- You need 1000W of 80 Plus Gold power for high-draw hardware.
- You want fully modular cables to reduce case clutter.
- You require dual EPS12V motherboard connections.
Skip if
- You are building a compact small-form-factor system requiring an SFX power supply.
- You need a white power supply to match your build theme.
Verdict: Corsair RMe 1000W Fully Modular Power Supply provides substantial 80 Plus Gold capacity with dual EPS12V connections in a standard ATX profile. It is a dependable match for high-demand hardware setups using full-sized cases.
Corsair RM1000x Shift 1000W Power Supply
Best for: high-power builds needing side-panel cable access
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 1000W
- Modularity
- Fully Modular
- ATX Version
- ATX 3.0
- Dimensions
- 7.09 × 5.91 × 5.08 inches
- Weight
- 4.2 pounds
View on Amazon: Corsair RM1000x Shift 1000W Power Supply (paid link)
This ATX power supply delivers 1000W of power with an 80 Plus Gold efficiency rating. It features a fully modular side-mounted connection interface, ATX 3.0 compliance, and PCIe 5.0 support. Measuring 7.09 inches long, it provides dedicated modular cabling directly from the unit side. You will find this unit suits high-draw systems requiring clean cable management in compatible ATX cases.
Pros
- 1000W capacity with 80 Plus Gold efficiency
- ATX 3.0 and PCIe 5.0 compliant
- Fully modular side-mounted connection interface
- 4.2-pound total weight
Cons
- 7.09-inch length requires extra case depth
- Side-facing connectors require side clearance inside the chassis
Good fit if
- You need 1000W capacity for ATX 3.0 and PCIe 5.0 hardware.
- You want side-facing modular ports for direct cable access.
- You have an ATX case that fits a 7.09-inch long unit.
Skip if
- You use a compact case lacking clearance next to the side modular panel.
- You need a shorter power supply for tight compartments.
Verdict: Corsair RM1000x Shift 1000W ATX PSU provides high-wattage 80 Plus Gold output with an innovative side modular layout for compatible cases. It delivers ATX 3.0 and PCIe 5.0 standards in a 7.09-inch form factor.
Corsair RM850x Shift 850W White ATX Power Supply
Best for: white builds needing side-mounted cable access
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 850W
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- PCIe 5.1
- Dimensions
- 6.3 × 5.91 × 3.39 inches
View on Amazon: Corsair RM850x Shift 850W White ATX Power Supply (paid link)
This 850W ATX power supply delivers 80 Plus Gold efficiency with modern ATX 3.1 and PCIe 5.1 compliance. It features a fully modular layout with a side-facing cable interface designed for clean case routing. You get Zero RPM fan operation during lower workloads and a white exterior finish. It suits you if you need modern graphics hardware support and 850 watts of clean power inside a compatible chassis.
Pros
- 80 Plus Gold certified efficiency
- ATX 3.1 and PCIe 5.1 compliance
- Fully modular side-mounted cable connections
- Zero RPM fan mode for quiet low-load operation
Cons
- Side-facing connectors require dedicated side clearance in your case
- 6.3-inch length is longer than standard compact 140 mm units
Good fit if
- You need ATX 3.1 and PCIe 5.1 compatibility for newer graphics cards.
- You want side-oriented modular connectors to simplify cable routing.
- You are building a white-themed system requiring up to 850W.
Skip if
- You use a compact chassis without clearance behind the side panel.
- You require 1000W or more for high-draw hardware configurations.
Verdict: Corsair RM850x Shift 850W White PSU provides ATX 3.1 compliance and 80 Plus Gold efficiency with a side-panel connection design. It is a dependable choice for modern builds that accommodate side-facing cables.
MSI MAG ATX 3.0 Modular Power Supply
Best for: Mid-range ATX 3.0 gaming builds
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Full Modular
- ATX Version
- ATX 3.0
- PCIe Connector Type
- PCIe 5.0
- Fan Size
- 120mm
- Recommended Use
- Gaming
View on Amazon: MSI MAG ATX 3.0 Modular Power Supply (paid link)
This MSI MAG unit gives you an 80 Plus Gold certified ATX power supply with full modular flat cables for clean routing. It features standard ATX 3.0 support and a native PCIe 5.0 connector designed for modern graphics cards. Built with a 120mm fluid dynamic bearing fan and DC-to-DC topology, it suits you if you need modern hardware compatibility in a 750W gaming build without extra clutter.
Pros
- Native PCIe 5.0 connector with ATX 3.0 support
- 80 Plus Gold efficiency certification
- Fully modular design with flat cables
- Comprehensive protection suite including OVP, OCP, OPP, OTP, SCP, and UVP
Cons
- Renewed product condition rather than factory new
- 750W capacity limits headroom for power-heavy hardware configurations
- Uses a 120mm fan rather than a larger 135mm or 140mm cooling design
Good fit if
- You need native PCIe 5.0 power connectivity for an RTX 40 series graphics card.
- You want fully modular flat cables to simplify routing inside your PC chassis.
- You are building a mid-range system that runs comfortably within 750W.
Skip if
- You prefer brand-new factory-sealed equipment over renewed hardware.
- You require 850W or more for ultra-high-end graphics cards and processors.
Verdict: MSI MAG 750W ATX 3.0 Power Supply delivers verified 80 Plus Gold efficiency and dedicated PCIe 5.0 power in a fully modular package. It supplies dependable protections and tidy cabling for standard modern gaming PCs.
Corsair RM750x Shift White 750W ATX Power Supply
Best for: clean cable routing in compatible ATX cases
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 750W
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- Fan Size
- 140mm
- PCIe Version
- PCIe 5.1
View on Amazon: Corsair RM750x Shift White 750W ATX Power Supply (paid link)
The Corsair RM750x Shift is a fully modular 750W power supply certified for 80 Plus Gold efficiency and ATX 3.1. It features side-mounted micro-fit modular connectors, PCIe 5.1 readiness, and a 140mm fluid dynamic bearing fan with Zero RPM mode. This unit suits you if you are assembling a mid-tier modern build and want direct side access to your power cables.
Pros
- ATX 3.1 and PCIe 5.1 standards support
- Side-positioned modular interface with micro-fit cables
- 140mm fluid dynamic bearing fan with Zero RPM mode
- 100% 105°C-rated Japanese electrolytic capacitors
Cons
- Side connector layout requires lateral clearance in your case
- 750W capacity limits total power for high-draw hardware
Good fit if
- You need an ATX 3.1 power supply with PCIe 5.1 hardware support
- You have a PC case with space beside the power supply for side-mounted connectors
- You are planning a white-themed system build
Skip if
- You need more than 750W of continuous power delivery
- Your PC chassis lacks clearance along the PSU side panel
Verdict: Corsair RM750x Shift White 750W Power Supply delivers ATX 3.1 compliance and efficient Gold-rated power through unique side-facing modular terminals. It is a reliable 750W option if your enclosure accommodates side-facing cables.
EVGA SuperNOVA G2 1300W Fully Modular PSU
Best for: high-draw multi-GPU workstation and gaming rigs
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 1300W
- Modularity
- Fully Modular
- Fan Size
- 140mm
- Warranty
- 10 Year
- Dimensions
- 7.4 × 12 × 11.2 inches
View on Amazon: EVGA SuperNOVA G2 1300W Fully Modular PSU (paid link)
The EVGA SuperNOVA G2 1300W Fully Modular PSU is a high-capacity power supply designed for demanding PC builds. It delivers 1300W of power with an 80 Plus Gold rating, reaching up to 90% efficiency under typical loads. The fully modular design lets you attach only the cables you need. Equipped with a 140mm double ball bearing fan and comprehensive hardware protections, it suits you if you run multi-GPU configurations or power-hungry hardware.
Pros
- 1300W output for high-power system configurations
- 80 Plus Gold certified with up to 90% efficiency under typical loads
- Fully modular cable design
- 140mm double ball bearing cooling fan
- 10-year manufacturer warranty coverage
Cons
- Heavy chassis weight at 8 pounds
- Requires using included cables instead of third-party alternatives
- Long 7.4-inch chassis requires ample case space
Good fit if
- You need 1300W of capacity for NVIDIA SLI or AMD Crossfire multi-GPU setups.
- You want fully modular cables to reduce case clutter.
- You require long-term hardware support backed by a 10-year warranty.
Skip if
- You have a compact enclosure that cannot fit an 8-pound, 7.4-inch long chassis.
- You plan to use custom third-party cables for your power connections.
Verdict: EVGA SuperNOVA G2 1300W Fully Modular PSU provides heavy-duty power output and 80 Plus Gold efficiency for high-load systems. Its full modularity, 140mm dual ball bearing fan, and 10-year warranty support stable multi-GPU operation.
EVGA SuperNOVA 750 G2 750W Power Supply
Best for: Standard ATX builds needing 750W modular power
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 750W
- Modularity
- Fully Modular
- Fan Size
- 140mm
- Warranty
- 10 Year
- Dimensions
- 7 × 5.9 × 3.4 inches
View on Amazon: EVGA SuperNOVA 750 G2 750W Power Supply (paid link)
The EVGA SuperNOVA 750 G2 is a 750W power supply built with an 80 Plus Gold efficiency rating and fully modular cabling. It features Japanese capacitors, a 140mm double-ball-bearing fan with ECO Mode, and heavy-duty protections including OVP, UVP, and SCP. At 7 inches long, this unit suits you if you need reliable wattage and clean cable management in a spacious ATX chassis.
Pros
- 80 Plus Gold certified for up to 90% efficiency
- Fully modular cabling reduces clutter
- 140mm double ball bearing fan with ECO Mode
- Japanese brand capacitors
- 10-year warranty
Cons
- 7-inch length limits clearance in compact cases
- Relatively heavy at 6.6 pounds
Good fit if
- You need 750W of power with fully modular cables.
- You have a chassis that fits a 7-inch power supply.
- You want a 140mm double ball bearing fan with ECO Mode.
Skip if
- You build inside a compact case with tight PSU clearance.
- You need more than 750W capacity for your hardware.
Verdict: EVGA SuperNOVA 750 G2 Fully Modular PSU delivers 80 Plus Gold efficiency and Japanese capacitors inside a fully modular design. Its 7-inch length makes it best suited for mid-sized and large computer cases.
Thermaltake Toughpower Grand 850W Gold PSU
Best for: Continuous high-temperature PC workloads
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 850W
- Modularity
- Fully Modular
- ATX Version
- ATX 12V 2.3
- Fan Size
- 14cm
- Dimensions
- 13.3 × 8.27 × 6.18 inches
View on Amazon: Thermaltake Toughpower Grand 850W Gold PSU (paid link)
The Thermaltake Toughpower Grand 850W is an 80 Plus Gold power supply built for sustained high-demand operation. It delivers 850 watts of continuous power at 50°C and uses 100% 105°C Japanese capacitors. Its fully modular cable design simplifies routing, while a 140mm dual ball-bearing fan handles cooling. It suits you if you need reliable, continuous wattage under elevated ambient temperatures.
Pros
- Delivers 850W continuous power at 50°C operating temperature
- 100% 105°C Japanese electrolytic and solid-state capacitors
- Fully modular cable configuration
- 140mm dual ball bearing fan for cooling durability
Cons
- Adheres to older ATX 12V 2.3 specification rather than ATX 3.0
- Lacks a dedicated 12VHPWR PCIe 5.0 cable interface
Good fit if
- You run high-load systems continuously in warm operating environments up to 50°C.
- You prefer an all-modular setup with Japanese internal capacitors.
Skip if
- You require native ATX 3.0 or PCIe 5.0 power delivery standards.
- You need a compact power supply for small-form-factor builds.
Verdict: Thermaltake Toughpower Grand 850W Gold PSU provides dependable continuous power output in hot environments through robust internal components. It serves heavy-duty workloads well if you do not require modern ATX 3.0 connectivity.
EVGA SuperNOVA 1600W Fully Modular PSU
Best for: high-draw multi-GPU workstations and extreme gaming builds
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 1600W
- Modularity
- Fully Modular
- Fan Size
- 140mm
- Warranty
- 10 Year
- Dimensions
- 3.35 × 8.7 × 5.9 inches
View on Amazon: EVGA SuperNOVA 1600W Fully Modular PSU (paid link)
The EVGA SuperNOVA 1600 G2 is a 1600-watt power supply built for extreme power demands. It delivers 80 Plus Gold efficiency with up to 90 percent typical efficiency on 115V power. You get fully modular cabling to reduce interior clutter, along with heavy-duty OVP, UVP, OCP, OPP, and SCP protections. A 140mm double-ball-bearing fan handles heat dissipation. This unit suits you if you run multi-GPU configurations or high-draw workstation builds.
Pros
- 1600W continuous power delivery
- 80 Plus Gold certified efficiency
- Fully modular cable design
- 140mm double ball bearing cooling fan
- 10-year manufacturer warranty
Cons
- Heavy 8-pound chassis weight
- Long 8.7-inch dimension requires a spacious case
- No native ATX 3.0 or 12VHPWR connectors listed
Good fit if
- You need massive 1600W capacity for multi-GPU setups.
- You want fully modular cables to simplify routing inside a large case.
- You prioritize long-term coverage with a 10-year warranty.
Skip if
- You have a compact case that cannot fit an 8.7-inch chassis.
- You run a standard single-GPU system requiring far less wattage.
Verdict: EVGA SuperNOVA 1600W Fully Modular PSU delivers massive 1600W capacity and 80 Plus Gold efficiency for ultra-high-draw systems. Its fully modular design and 10-year warranty make it a dependable choice when standard kilowatt units fall short.
FSP 400W Gold Flex ATX Mini ITX Power Supply
Best for: compact NAS and Mini ITX systems
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 400W
- PCIe Connector Type
- 6+2 pin
- Fan Size
- 4 cm
- Form Factor
- Mini ITX
- Dimensions
- 5.9 × 1.6 × 3.25 inches
View on Amazon: FSP 400W Gold Flex ATX Mini ITX Power Supply (paid link)
This FSP unit is a compact 400W power supply designed for Mini ITX and Flex ATX enclosures. It delivers 80 Plus Gold certified efficiency above 90 percent, helping minimize heat in tightly packed builds. With dimensions of 5.9 by 1.6 by 3.25 inches and a single PCIe 6+2 pin connector, you get dedicated power for low-profile graphics cards, compact network-attached storage setups, and small-form-factor servers.
Pros
- 80 Plus Gold certified with efficiency exceeding 90%
- Ultra-compact dimensions of 5.9 x 1.6 x 3.25 inches for Flex ATX cases
- Includes one PCIe 6+2 pin connector for dedicated graphics cards
- Rated for 100,000 hours MTBF at 25°C
Cons
- 400W output limits support for high-draw hardware
- Provides only a single PCIe power connector
- Uses a small 4 cm internal cooling fan
Good fit if
- You need an 80 Plus Gold supply for a Mini ITX, Flex ATX, or 1U server chassis.
- You are assembling a low-draw NAS or networking device requiring 400W or less.
- You use a compact graphics card that requires only one 6-pin or 8-pin power lead.
Skip if
- You require more than 400W of total output for power-hungry components.
- You need multiple PCIe power cables to run a higher-tier graphics card.
Verdict: FSP 400W Mini ITX Power Supply provides 80 Plus Gold efficiency in an ultra-compact Flex ATX footprint. It serves as a dependable choice for space-constrained home servers, NAS enclosures, and low-draw desktop builds.
EVGA 1000 GQ 1000W Semi-Modular PSU
Best for: High-wattage builds needing semi-modular cable management
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 1000W
- Modularity
- Semi Modular
- Fan Size
- 135mm
- Warranty
- 5 Year
- Dimensions
- 7.09 × 5.91 × 3.35 inches
View on Amazon: EVGA 1000 GQ 1000W Semi-Modular PSU (paid link)
The EVGA 1000 GQ 1000W Semi-Modular PSU delivers 1000W continuous output with 80 Plus Gold efficiency. You get a semi-modular cable layout with detachable peripheral lines. It includes 100% Japanese capacitors, a 135mm fluid dynamic bearing fan, and EVGA ECO Mode. Heavy-duty protections cover over-voltage, under-voltage, over-power, and over-temperature. This unit suits your build if you need high-wattage headroom and modular peripheral management.
Pros
- 1000W capacity with 80 Plus Gold efficiency certification
- 135mm fluid dynamic bearing fan with EVGA ECO Mode
- 100 percent Japanese capacitors
- Protections include OVP, UVP, OCP, OPP, SCP, and OTP
Cons
- Semi-modular design leaves core cables permanently attached
- 7.09-inch length requires clearance in smaller cases
- Five-year warranty coverage
Good fit if
- You need 1000W of power for high-draw hardware.
- You prefer semi-modular cabling where standard motherboard cables stay connected.
- You have case clearance for a 7.09-inch chassis.
Skip if
- You require a fully modular unit to detach every cable.
- You build inside a compact case with restricted PSU clearance.
Verdict: EVGA 1000 GQ 1000W Semi-Modular PSU provides heavy 1000W output and Japanese capacitors with semi-modular flexibility. It is a capable choice for demanding builds that do not require fully detachable cabling.
Seasonic 300W Flex ATX Gold Power Supply
Best for: compact industrial and low-wattage Flex ATX builds
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 300W
- ATX Version
- ATX 12 V v 2 31
- Power Factor Correction
- Active PFC
View on Amazon: Seasonic 300W Flex ATX Gold Power Supply (paid link)
This Seasonic unit is a compact 300W Flex ATX power supply designed for small industrial setups and compact enclosures. It features an 80 PLUS Gold rating that reaches up to 90 percent efficiency at 50 percent load on 115V AC input. You get Active PFC, a DC-to-DC converter design, and EPS 12V compliance. It suits you if you need reliable low-wattage delivery in tight builds that require specialized Flex ATX dimensions.
Pros
- 80 PLUS Gold efficiency reaching up to 90% at half load
- Integrated Active Power Factor Correction (Active PFC)
- DC-to-DC converter circuit architecture
- Compliant with ATX 12V v2.31 and EPS 12V standards
Cons
- 300W capacity limits hardware to low-power components
- Flex ATX form factor does not fit standard full-size ATX mounts
Good fit if
- You need a dedicated Flex ATX unit for small or industrial cases.
- You run a low-power configuration that requires 300W or less.
- You want 80 PLUS Gold efficiency with Active PFC.
Skip if
- You require high wattage for modern dedicated gaming graphics cards.
- You use a standard ATX enclosure without mounting adapters.
Verdict: Seasonic 300W Flex ATX Active PFC Power Supply provides efficient 80 PLUS Gold regulation and DC-to-DC conversion in an industrial-grade compact profile. It is a solid choice when you need reliable low-wattage output in a Flex ATX form factor.
EVGA SuperNova G2 1300W Gold Power Supply
Best for: high-wattage builds needing modular cabling
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 1300W
- Modularity
- Modular
- Dimensions
- 7.4 × 12 × 11.2 inches
- Weight
- 4 kilograms
View on Amazon: EVGA SuperNova G2 1300W Gold Power Supply (paid link)
The EVGA SuperNOVA G2 1300W Modular PSU delivers high-capacity output with an 80 Plus Gold efficiency rating. Its modular cable configuration allows you to connect only the leads you require for your system build. At 4 kilograms and measuring 7.4 inches in length, this unit demands substantial chassis space and robust support. It suits you if you operate demanding multi-component hardware configurations that require dedicated 1300-watt power delivery.
Pros
- 1300W total power capacity
- 80 Plus Gold efficiency rating
- Modular cable design
Cons
- Heavy 4-kilogram weight
- Large 7.4-inch length requires extra case clearance
Good fit if
- You need 1300W of continuous power capacity.
- You want an 80 Plus Gold unit with modular cables.
Skip if
- You use a compact chassis unable to fit a 7.4-inch long unit.
- You do not need a high 1300W power output.
Verdict: EVGA SuperNOVA G2 1300W Modular PSU delivers high-output 1300-watt power with 80 Plus Gold efficiency for heavy workloads. Its 4-kilogram modular frame requires ample room in your PC case.
EVGA SuperNOVA G3 1000W Gold PSU
Best for: high-draw systems needing compact modular power
- Efficiency Rating
- 80 Plus Gold
- Wattage
- 1000W
- Modularity
- Fully Modular
- Fan Size
- 130mm
- Warranty
- 10 Year
- Dimensions
- 5.91 × 5.91 × 3.35 inches
View on Amazon: EVGA SuperNOVA G3 1000W Gold PSU (paid link)
The EVGA SuperNOVA G3 delivers 1000W of power with an 80 Plus Gold efficiency rating. It features a fully modular cable design, allowing you to connect only the leads your hardware requires. Cooling is handled by a 130mm hydraulic dynamic bearing fan paired with an Eco Mode. Measuring 5.91 inches long, this unit suits you if you need high output in standard ATX cases.
Pros
- 1000W output with 80 Plus Gold efficiency
- Fully modular cable system
- 130mm hydraulic dynamic bearing fan with Eco Mode
- Compact 5.91-inch depth
- 10-year warranty coverage
Cons
- No PCIe 5.0 or 12VHPWR connectors listed in specs
- Total unit weight is 6.1 pounds
Good fit if
- You need 1000W of capacity for multi-component systems.
- You want fully modular cables to simplify your case routing.
- You prefer a compact 5.91-inch length for easier clearance.
Skip if
- You need native ATX 3.0 or 12V-2x6 cable support specified.
- You run mid-tier components that do not require 1000W.
Verdict: EVGA SuperNOVA G3 1000W Gold PSU packs high wattage and 80 Plus Gold efficiency into a compact 5.91-inch modular enclosure. It is a capable choice if you require 1000W backed by a 10-year warranty.
Specifications side by side
| Spec | MSI MAG 850W Fully Modular ATX Power Supply | Corsair RM1000e 1000W ATX Power Supply | Corsair RM1000x Shift 1000W Power Supply | Corsair RM850x Shift 850W White ATX Power Supply | MSI MAG ATX 3.0 Modular Power Supply | Corsair RM750x Shift White 750W ATX Power Supply | EVGA SuperNOVA G2 1300W Fully Modular PSU | EVGA SuperNOVA 750 G2 750W Power Supply | Thermaltake Toughpower Grand 850W Gold PSU | EVGA SuperNOVA 1600W Fully Modular PSU | FSP 400W Gold Flex ATX Mini ITX Power Supply | EVGA 1000 GQ 1000W Semi-Modular PSU | Seasonic 300W Flex ATX Gold Power Supply | EVGA SuperNova G2 1300W Gold Power Supply | EVGA SuperNOVA G3 1000W Gold PSU |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wattage | 850W | 1000 Watt | 1000W | 850W | not specified | 750W | 1300W | 750W | 850W | 1600W | 400W | 1000W | 300W | 1300W | 1000W |
| Efficiency Rating | 80+ Gold | 80 PLUS Gold | 80 Plus Gold | 80 Plus Gold | 80 Plus Gold | 80 Plus Gold | 80 PLUS Gold | 80 PLUS Gold | 80 PLUS Gold | 80 PLUS Gold | 80 Plus Gold | 80 PLUS Gold | 80 PLUS Gold | 80 Plus Gold | 80 Plus Gold |
| Modularity | Fully Modular | Fully Modular | Fully Modular | Fully Modular | Full Modular | Fully Modular | Fully Modular | Fully Modular | Fully Modular | Fully Modular | not specified | Semi Modular | not specified | Modular | Fully Modular |
| ATX Version | ATX 3.1 | not specified | ATX 3.0 | ATX 3.1 | ATX 3.0 | ATX 3.1 | not specified | not specified | ATX 12V 2.3 | not specified | not specified | not specified | ATX 12 V v 2 31 | not specified | not specified |
| PCIe Connector Type | 12V-2x6 | not specified | not specified | PCIe 5.1 | PCIe 5.0 | not specified | not specified | not specified | not specified | not specified | 6+2 pin | not specified | not specified | not specified | not specified |
| Fan Size | not specified | not specified | not specified | not specified | 120mm | 140mm | 140mm | 140mm | 14cm | 140mm | 4 cm | 135mm | not specified | not specified | 130mm |
| Warranty | 10 Year | not specified | not specified | not specified | not specified | not specified | 10 Year | 10 Year | not specified | 10 Year | not specified | 5 Year | not specified | not specified | 10 Year |
| Form Factor | ATX | ATX | ATX | ATX | ATX | ATX | not specified | not specified | ATX | not specified | Mini ITX | not specified | not specified | not specified | not specified |
| PCIe Version | PCIe 5.1 | not specified | not specified | PCIe 5.1 | not specified | PCIe 5.1 | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Recommended Use | Gaming | not specified | not specified | not specified | Gaming | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| 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 | not specified | not specified |
| Power Factor Correction | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Active PFC | not specified | not specified |
| Size | 850W (PCIE 5) | 1000W | 1000W | 850W | not specified | 750W | 1300W | 750W | 850W | 1600W | 400W_Gold | 1000W | not specified | not specified | 1000W |
| Dimensions | 12 × 8.75 × 4.92 inches | 5.91 × 5.51 × 3.39 inches | 7.09 × 5.91 × 5.08 inches | 6.3 × 5.91 × 3.39 inches | 11.8 × 7.9 × 3.9 inches | 6.3 × 5.91 × 3.39 inches | 7.4 × 12 × 11.2 inches | 7 × 5.9 × 3.4 inches | 13.3 × 8.27 × 6.18 inches | 3.35 × 8.7 × 5.9 inches | 5.9 × 1.6 × 3.25 inches | 7.09 × 5.91 × 3.35 inches | not specified | 7.4 × 12 × 11.2 inches | 5.91 × 5.91 × 3.35 inches |
| Weight | not specified | 3.66 pounds | 4.2 pounds | 3.75 pounds | 3.97 pounds | 3.75 pounds | 8 pounds | 6.6 pounds | 6 pounds | 8 pounds | 2 pounds | 7 pounds | not specified | 4 kilograms | 6.1 pounds |
| Color | not specified | Black | Black | White | not specified | White | Black | not specified | not specified | Black | not specified | Black | Multicolor | not specified | not specified |
| Model | not specified | not specified | not specified | not specified | not specified | CP-9020273-NA | 120-G2-1300-XR | 220-G2-0750-XR | PS-TPG-0850MPCGUS-1 | 120-G2-1600-X1 | FSP400-60FGGBA | 210-GQ-1000-V1 | SSP-300SUG | 120-G2-1300-X3 | 220-G3-1000-X1 |
Is an 80 Plus Gold Power Supply Worth It?
An 80 Plus Gold rating confirms verified efficiency standards across varied workloads, from compact 300W setups to 1600W multi-GPU workstations. In daily use, this specification pairs with features like DC-to-DC conversion and active PFC to maintain continuous output in high-temperature environments. Models in this tier regularly include Japanese capacitors and manufacturer warranties between 5 and 10 years. This level of efficiency supports stable delivery across standard desktop, NAS, and high-draw systems.
Worth it if
- You run sustained workloads or multi-GPU setups that require stable, high-capacity output.
- You operate compact Flex ATX or Mini ITX builds like home servers and NAS enclosures.
- You prefer components built with Japanese capacitors and warranty coverage reaching up to 10 years.
Skip it if
- You build an entry-level system that does not require active PFC or continuous high-temperature output.
- You do not need modular cable management or multi-year warranty coverage up to 10 years.
Before choosing power supply dimensions, you should verify maximum chassis depth specifications for a corsair PC case to ensure modular cables fit.
How We Picked These Models
You will find 15 power supplies selected for this 2026 guide based entirely on published manufacturer specifications. Every listed model qualifies by stating an 80 Plus Gold efficiency rating in its product title or specifications list. Products are not physically handled, ensuring you compare options strictly through verified technical details. To keep comparisons straightforward, you will only see one size or variant from each product family.
The lineup displays products in stock first, then by Amazon sales rank (better-selling products first). Live availability updates on the page at least daily to help you track current inventory across all listed models.
How to Choose an 80 Plus Gold PSU
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Match Wattage to Total Draw
Calculate your component power requirements before selecting a wattage class. Low-power builds run smoothly on 300W to 400W units, while mainstream gaming rigs require 750W to 850W. Workstations with multiple graphics cards demand 1000W or higher. The EVGA SuperNOVA 1600W Fully Modular PSU provides 1600W for extreme workloads that surpass standard kilowatt units. Sizing your unit with adequate overhead prevents sudden shutdowns during maximum load peaks and keeps continuous electrical draw within the most stable operating range of the power supply.
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Measure Case Clearance Depth
Measure the internal clearance inside your computer case before buying. While standard ATX width and height remain fixed, overall length varies significantly between models. Compact kilowatt units like the EVGA SuperNOVA G3 1000W Gold PSU measure 5.91 inches long, making them easy to fit alongside drive cages. Larger units can extend beyond 7 inches or even 12 inches. Check your case manual to confirm maximum power supply depth, leaving at least one to two extra inches behind the chassis to accommodate stiff modular cable bends.
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Select Your Modularity Type
Determine whether you require full cable flexibility or if fixed primary cables suit your chassis. Fully modular units permit detaching every lead, allowing you to install only the wires your build requires. Semi-modular models feature permanently attached motherboard and CPU power harnesses while offering detachable peripheral and graphics cables. The EVGA 1000 GQ 1000W Semi-Modular PSU uses this layout to simplify assembly while keeping high-amperage cables permanently connected. Choose semi-modular options if you plan to use standard mainboard power lines and want straightforward cable management.
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Check Modular Terminal Placement
Inspect the cable terminal orientation to match your case interior. Most power supplies place modular sockets on the back face directly opposite the power switch. Certain models, such as the Corsair RM850x Shift 850W White ATX Power Supply, position connections on the side panel. This design gives you direct access behind the motherboard tray for easier plugging and unplugging. However, side-facing connections require sufficient clearance between the power supply body and your case side panel. Verify your enclosure supports side-mounted access before choosing this configuration.
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Review Manufacturer Warranty Terms
Check the manufacturer warranty length listed in the product specifications. Power supply warranties on 80 Plus Gold models generally range between five and ten years. A longer term reflects internal component durability, such as high-grade capacitors and heavy-duty cooling fans designed for sustained operation. The MSI MAG 850W Fully Modular ATX Power Supply includes a 10-year warranty, securing long-term service across multiple hardware upgrade cycles. Select a unit with 10-year coverage if you want your investment protected through several generations of graphics cards and processors.
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Verify Active PFC Support
Review the power factor correction specifications to verify clean input power delivery. Active PFC dynamically adjusts incoming alternating current to match voltage requirements, reducing harmonic distortion and reactive power loss across the grid. The Seasonic 300W Flex ATX Gold Power Supply includes active PFC alongside DC-to-DC conversion, ensuring steady direct-current rail regulation within a small footprint. If you operate specialized equipment, small home servers, or sensitive audio setups, selecting an active PFC model ensures uniform voltage control and minimal electrical feedback into your electrical circuit.
Frequently asked questions
What does fully modular mean on an 80 Plus Gold power supply?
Fully modular means every power cable detaches completely from the supply frame. You plug in only the specific harnesses your system components require, eliminating unused wiring. Units such as the EVGA SuperNOVA 750 G2 and Corsair RM1000e use full modularity to free up internal case space, reduce clutter, and simplify your component assembly.
What is the difference between semi-modular and fully modular power supplies?
Semi-modular power supplies include fixed primary cables alongside detachable auxiliary lines. Essential connections like motherboard wiring remain permanently attached, while peripheral cables can be added or removed. A model like the EVGA 1000 GQ uses semi-modular cabling, whereas fully modular units like the Corsair RM1000x Shift allow you to disconnect every cable from the chassis.
How does a side-interface power supply work in a PC case?
Side-interface power supplies place modular cable terminals on the side panel rather than the rear face. This orientation lets you plug and unplug modular cables directly behind the motherboard tray. Units like the Corsair RM850x Shift and RM750x Shift utilize this layout, which requires a case with sufficient clearance along the power supply compartment.
Can you install a Flex ATX power supply in standard desktop cases?
Flex ATX power supplies are engineered for small enclosures rather than standard ATX mounts. These compact units, such as the FSP 400W measuring 1.6 inches wide and 3.25 inches high, target low-profile systems. You use them in compact Mini ITX builds, server racks, or network-attached storage setups where full-size ATX units cannot physically fit.
What role does Active PFC play in an 80 Plus Gold power supply?
Active Power Factor Correction aligns the phase of electrical current with voltage to maximize power efficiency. This internal circuitry reduces reactive power losses and stabilizes the alternating current before internal conversion. Hardware like the Seasonic 300W utilizes active PFC alongside DC-to-DC conversion to maintain uniform voltage regulation across varying electrical load levels.
Do high-wattage power supplies require larger computer cases?
High-wattage power supplies often feature extended housings that require mid-tower or full-tower computer cases. While standard chassis accommodate lengths around 5.9 inches, heavy-duty supplies demand more room. For instance, the EVGA SuperNOVA G2 1300W measures 7.4 inches long, meaning you must verify your case clearance to accommodate both the frame and cable bend radius.
What is the purpose of dual EPS12V connections on a power supply?
Dual EPS12V connections provide two separate eight-pin lines to feed electrical current directly to your processor socket. Modern performance motherboards use these paired ports to distribute high wattage evenly across motherboard power delivery circuits. Models like the Corsair RM1000e supply dual EPS12V links to support high-draw computing components under continuous processing loads.