Corsair PC Power Supplies: 15 Picks Ranked by Specs
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Finding the right corsair PC power supply depends on your system wattage and case dimensions. The brand offers ATX units ranging from 550W to 1500W, side-cabled Shift designs, fully modular and semi-modular cabling, and replacement cable kits in black, white, or red finishes.
The Corsair SF 1000W Fully Modular PSU leads the list as the best option for high-wattage builds requiring fully modular cabling. This guide compares 15 products based strictly on the specifications published on each listing.
Quick picks
Our 15 picks
Corsair SF 1000W Fully Modular PSU
Best for: high-wattage builds requiring fully modular cabling
- Wattage
- 1000 Watts
- Efficiency Rating
- 80 Plus
- Modularity
- Fully Modular
- Size
- 1000W
- Dimensions
- 7.6 × 9.4 × 11.3 inches
- Weight
- 2.31 pounds
View on Amazon: Corsair SF 1000W Fully Modular PSU (paid link)
The Corsair SF1000 1000W Fully Modular PSU is a power supply delivering 1000 watts of output in a black finish. Its fully modular design lets you attach only the cables your specific configuration requires. Weighing 2.31 pounds, this renewed unit provides high capacity for demanding hardware builds without clutter. It suits you if you need a high wattage power delivery system with modular cabling for your desktop computer setup.
Pros
- 1000-watt power output
- Fully modular cable configuration
- Lightweight build at 2.31 pounds
- Listed 80 Plus and low-noise design
Cons
- Renewed hardware rather than new condition
- Specific 80 Plus efficiency tier is not stated
- Included cable types and counts are omitted from specifications
Good fit if
- You need 1000 watts of power for your system components.
- You want fully modular cabling to simplify internal cable management.
- You are comfortable with renewed computer hardware.
Skip if
- You want brand-new hardware rather than a renewed unit.
- You require a documented 80 Plus rating tier such as Gold or Platinum.
- You have lower power requirements and do not need 1000 watts.
Verdict: Corsair SF1000 1000W Fully Modular PSU delivers 1000 watts of fully modular power in a lightweight black housing. It provides the capacity you need for demanding builds if you accept renewed hardware.
Corsair RM850x 850W Fully Modular ATX 3.1 PSU
Best for: modern ATX builds needing PCIe 5.1 power
- Wattage
- 850W
- Efficiency Rating
- Cybenetics Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- PCIe Version
- PCIe 5.1
View on Amazon: Corsair RM850x 850W Fully Modular ATX 3.1 PSU (paid link)
The Corsair RM850x is an 850W ATX power supply built to the ATX 3.1 standard. It features full modularity, allowing you to attach only the cables your build requires. With native PCIe 5.1 support and an included 12V-2x6 connector, this unit handles modern graphics cards without adapters. It suits you if you are assembling an updated mid-to-high-tier desktop that demands clean cable routing and current-generation power delivery standards.
Pros
- Fully modular cable system
- ATX 3.1 and PCIe 5.1 compliant
- Includes dedicated 12V-2x6 connector
- 850W total output capacity
Cons
- 850W limit may not suffice for extreme multi-GPU builds
- ATX form factor does not fit compact SFX cases
Good fit if
- You need a dedicated 12V-2x6 connector for PCIe 5.1 hardware.
- You want fully modular cables to reduce case clutter.
- You are building a system that fits within an 850W power budget.
Skip if
- You need 1000W or more for power-heavy component configurations.
- You are building in a small-form-factor case requiring an SFX unit.
Verdict: Corsair RM850x 850W ATX 3.1 Power Supply provides modern ATX 3.1 and PCIe 5.1 connectivity in a fully modular design. It delivers reliable power specifications for mid-to-high-tier desktop builds.
Corsair CX-M Modular Power Supply
Best for: budget-focused modular Corsair PC builds
- Efficiency Rating
- 80 Plus Bronze
- Modularity
- Modular
View on Amazon: Corsair CX-M Modular Power Supply (paid link)
This renewed Corsair CX-M series unit provides an 80 Plus Bronze efficiency rating in a standard black finish. It features a modular cable layout to help you connect only the leads your build requires. If you need a functional Corsair power supply with certified baseline efficiency and do not require a factory-new Gold or Platinum unit, this hardware suits your setup.
Pros
- 80 Plus Bronze efficiency certification
- Modular cable design
- Standard black finish
Cons
- Renewed condition rather than brand-new
- Lower efficiency rating than Gold or Platinum alternatives
Good fit if
- You want modular cabling to reduce interior clutter.
- You are comfortable installing renewed hardware in your system.
Skip if
- You require brand-new, unopened retail hardware.
- You want higher efficiency ratings such as 80 Plus Gold.
Verdict: Corsair CX-M Modular Power Supply (Renewed) delivers standard 80 Plus Bronze efficiency and modular cabling in an inspected renewed format.
Corsair RM1000x 1000W ATX 3.1 PSU
Best for: high-end systems needing ATX 3.1 support
- Wattage
- 1000W
- Efficiency Rating
- Cybenetics Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- PCIe Version
- PCIe 5.1
View on Amazon: Corsair RM1000x 1000W ATX 3.1 PSU (paid link)
The Corsair RM1000x is an ATX power supply delivering 1000W of power. It meets ATX 3.1 and PCIe 5.1 standards and includes a dedicated 12V-2x6 connector. You get fully modular cabling to keep your PC build organized by attaching only the cables you need. This unit suits you if you are building a modern, high-draw system that requires the latest graphics card power connectors.
Pros
- 1000W power output
- Native ATX 3.1 and PCIe 5.1 compliance
- Dedicated 12V-2x6 connector
- Fully modular cable design
Cons
- Standard ATX form factor does not fit small SFX cases
- Weight of 6.88 pounds adds significant mass to cases
Good fit if
- You need 1000W for a high-demand PC configuration.
- You want native PCIe 5.1 and 12V-2x6 cable compatibility.
- You want a fully modular power supply to minimize internal cable clutter.
Skip if
- You are building a compact small-form-factor system that requires an SFX unit.
- You need a white power supply to match your case aesthetic.
Verdict: Corsair RM1000x 1000W ATX 3.1 Power Supply delivers robust 1000W capacity with modern ATX 3.1 and PCIe 5.1 support. It provides fully modular cabling to support clean, power-heavy desktop builds.
Corsair RM1000e 1000W ATX Power Supply
Best for: high-wattage ATX PC builds
- Wattage
- 1000 Watt
- Efficiency Rating
- 80 PLUS Gold
- 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)
The Corsair RM1000e is a fully modular ATX power supply delivering up to 1000 watts of continuous power. It features an 80 Plus Gold efficiency rating and includes dual EPS12V connectors alongside 105°C-rated capacitors. Measuring 5.9 inches long and weighing 3.66 pounds, this black unit fits standard desktop setups. You will find it suits multi-component systems that need flexible modular cable management.
Pros
- 1000W output with 80 Plus Gold efficiency
- Fully modular cable configuration
- Dual EPS12V connectors included
- Built with 105°C-rated capacitors
Cons
- 80 Plus Gold rating is lower than Platinum or Titanium alternatives
- Standard ATX dimensions do not fit compact SFX chassis
Good fit if
- You need 1000 watts of power in a standard ATX enclosure.
- You require dual EPS12V connectors for your motherboard.
- You prefer detachable modular cabling to reduce interior clutter.
Skip if
- You are assembling a small-form-factor system that requires an SFX unit.
- You require an efficiency rating higher than 80 Plus Gold.
Verdict: Corsair RM1000e 1000W Modular Power Supply provides a solid 1000W capacity, 80 Plus Gold efficiency, and dual EPS12V connections for standard desktop builds. Its full modularity and 105°C-rated capacitors deliver practical reliability for power-demanding configurations.
Corsair RM850x Shift 850W White ATX Power Supply
Best for: modern white ATX 3.1 PC builds
- Wattage
- 850W
- Efficiency Rating
- 80 Plus Gold
- 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)
The Corsair RM850x Shift 850W White Power Supply is a fully modular ATX unit built for modern hardware. It delivers 850W of power with an 80 Plus Gold efficiency certification. You get support for ATX 3.1 and PCIe 5.1 standards alongside a Zero RPM fan profile for quiet idle operation. It fits your build if you need reliable wattage with a white finish.
Pros
- 80 Plus Gold efficiency rating
- ATX 3.1 and PCIe 5.1 compliance
- Fully modular cable configuration
- Zero RPM fan mode
Cons
- White finish does not match black-themed cases
- 850W limit unsuitable for ultra-high-wattage dual-GPU systems
- 6.3-inch length requires sufficient chassis depth
Good fit if
- You need an 850W power supply with ATX 3.1 and PCIe 5.1 support.
- You are assembling a white-themed desktop PC.
- You prefer fully modular cabling for cleaner cable management.
Skip if
- You need 1000W or higher output for peak power loads.
- You require a black power supply to suit your build.
- You have a compact enclosure that cannot clear a 6.3-inch chassis.
Verdict: Corsair RM850x Shift 850W White Power Supply delivers ATX 3.1 compatibility and 80 Plus Gold efficiency in an all-white enclosure. It is a solid choice for modern builds needing PCIe 5.1 power delivery.
Corsair RM750x Shift White 750W ATX Power Supply
Best for: white ATX 3.1 builds with side-cable clearance
- Wattage
- 750W
- Efficiency Rating
- 80 Plus Gold
- 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 750W fully modular ATX power supply finished in white. It features side-mounted Type 5 micro-fit cable connections for direct case access. Rated at 80 Plus Gold efficiency, it complies with ATX 3.1 and PCIe 5.1 specifications to handle modern hardware power demands. A 140mm fluid dynamic bearing fan cools the unit. This model suits you if you build inside a compatible chassis and want cleaner cable routing.
Pros
- Side-mounted modular Type 5 micro-fit connections
- Intel ATX 3.1 certified and PCIe 5.1 compliant
- 80 Plus Gold efficiency rating
- 100% 105°C-rated Japanese electrolytic capacitors
- 140mm fluid dynamic bearing cooling fan
Cons
- Side cable orientation requires compatible chassis clearance
- Total power delivery capped at 750W
- Uses Type 5 micro-fit connectors rather than standard legacy pinouts
Good fit if
- You need an ATX 3.1 and PCIe 5.1 compliant 750W unit.
- You build in an ATX chassis that accommodates side-facing modular connectors.
- You prefer a white power supply with 80 Plus Gold efficiency.
Skip if
- You require more than 750W for higher-draw components.
- You use a compact or restrictive PC case lacking lateral PSU clearance.
Verdict: Corsair RM750x Shift 750W White Power Supply pairs 80 Plus Gold efficiency with ATX 3.1 standards and side-mounted modular connectors. It delivers stable power and simplified cable routing for compatible modern ATX builds.
Corsair Individually Sleeved PSU Cables Starter Kit
Best for: custom Corsair PSU cable management
- Warranty
- 2 Yr
- Dimensions
- 29.5 × 2.44 × 0.63 inches
- Weight
- 12 ounces
View on Amazon: Corsair Individually Sleeved PSU Cables Starter Kit (paid link)
This modular power supply cable kit equips your compatible Corsair power supply with red triple-layer mesh paracord sleeving. At 75 cm in length, these cables feature heatshrink-less connectors, modular interlocking cable combs, and integrated in-line capacitors on the ATX 24-pin, EPS12V, and PCIe lines for stable power delivery. It suits you if you want to replace stock Corsair power supply cables with color-matched, pre-sleeved wiring.
Pros
- Flexible triple-layer mesh paracord sleeving with heatshrink-less connectors
- In-line capacitors on ATX 24-pin, EPS12V, and PCIe cables
- Modular interlocking cable combs included
- Standard 75 cm length for routing in PC cases
Cons
- Cable kit only, contains no power supply unit
- Compatible exclusively with Corsair modular power supplies
Good fit if
- You own a compatible Corsair power supply and want red sleeved cables.
- You want interlocking combs and flexible paracord wiring for tidy routing.
Skip if
- You need an actual power supply unit instead of modular cables.
- You use a power supply from a brand other than Corsair.
Verdict: Corsair Individually Sleeved PSU Cables Starter Kit replaces standard Corsair cables with 75 cm paracord-sleeved lines and integrated filtering capacitors. It delivers clean cable presentation specifically tailored to Corsair modular units.
Corsair Type 4 Gen 4 Sleeved PSU Cable Pro Kit
Best for: custom cable routing on Corsair Type 4 PSUs
- Dimensions
- 29.5 × 1.02 × 0.63 inches
- Weight
- 1.51 pounds
View on Amazon: Corsair Type 4 Gen 4 Sleeved PSU Cable Pro Kit (paid link)
This is a replacement cable kit rather than a standalone power supply unit. Built for compatible Corsair modular power supplies, it provides Type 4 Gen 4 connections with flexible triple-layer mesh paracord sleeving. The ATX 24-pin, EPS12V, and PCIe cables integrate in-line capacitors to maintain stable voltage delivery. You also get modular interlocking cable combs. It suits you if you want organized interior wiring spanning lengths up to 29.53 inches.
Pros
- Triple-layer mesh paracord sleeving with heatshrink-free connectors
- In-line capacitors on ATX 24-pin, EPS12V, and PCIe cables
- Includes modular interlocking cable combs
- Generous length of 29.53 inches for routing
Cons
- Accessory cable set only; does not include a power supply
- Only compatible with Corsair Type 4 modular units
Good fit if
- You already own a compatible Corsair Type 4 modular power supply.
- You want individually sleeved paracord cables with built-in capacitors.
- You want interlocking cable combs to train and organize your power runs.
Skip if
- You need an actual power supply unit to run your PC.
- You have a power supply from another manufacturer or an incompatible Corsair series.
Verdict: Corsair Type 4 Gen 4 Sleeved PSU Cable Kit delivers flexible paracord wiring, interlocking combs, and in-line capacitors for compatible Corsair modular power supplies.
Corsair RM550x 550W 80 Plus Gold PSU
Best for: quiet mid-range PC builds needing 550W
- Wattage
- 550W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fully Modular
- Fan Size
- 135mm
- Form Factor
- ATX
- Dimensions
- 6.3 × 5.91 × 3.39 inches
View on Amazon: Corsair RM550x 550W 80 Plus Gold PSU (paid link)
The Corsair RM550x is a 550-watt ATX power supply with an 80 Plus Gold efficiency rating. It features a fully modular cable design, allowing you to attach only the leads your build requires. Inside, a 135mm magnetic levitation fan supports a Zero RPM mode for silent low-load operation, paired with 105°C Japanese capacitors and DC-to-DC conversion. It suits your build if you run modest hardware needing 550W or less.
Pros
- 80 Plus Gold certified efficiency
- Fully modular cabling simplifies cable management
- 135mm magnetic levitation fan with Zero RPM mode
- 100% industrial-grade, 105°C Japanese capacitors
- Ten-year manufacturer warranty
Cons
- 550W capacity limits headroom for power-heavy components
- 6.3-inch length requires standard ATX clearance
Good fit if
- You need an efficient 550W supply for mid-tier components.
- You want quiet operation at lower loads via Zero RPM mode.
- You prefer detachable modular cables to reduce case clutter.
Skip if
- You require more than 550W of power for high-draw hardware.
- You need a compact SFX power supply for a small chassis.
Verdict: Corsair RM550x 550W Gold Fully Modular PSU delivers solid 80 Plus Gold efficiency and quiet cooling for modest power envelopes. Its 10-year warranty and Japanese capacitors make it a dependable choice for sub-550W systems.
Corsair 650W Semi-Modular ATX Power Supply
Best for: mid-range desktop builds needing semi-modular cabling
- Wattage
- 650 Watt
- Efficiency Rating
- 80 Plus Bronze
- Modularity
- Semi-Modular
- Form Factor
- ATX
- Size
- 650W
- Dimensions
- 5.91 × 5.51 × 3.39 inches
View on Amazon: Corsair 650W Semi-Modular ATX Power Supply (paid link)
The Corsair CX650M is an ATX power supply delivering 650 watts of continuous power. It features semi-modular cabling with dual EPS12V connectors, letting you attach only the secondary cables your setup requires. With an 80 Plus Bronze efficiency certification and Japanese capacitors rated to 105 degrees Celsius, this unit suits you if you need a straightforward, mid-capacity power supply for your standard desktop build without excess loose wiring.
Pros
- Semi-modular cable design with dual EPS12V connectors
- Japanese capacitors rated up to 105°C
- 80 PLUS Bronze certified efficiency
- Rifle bearing fan designed for quiet operation
- DC-DC conversion for +3.3V and +5V rails
Cons
- 80 PLUS Bronze rating delivers lower efficiency than Gold units
- Semi-modular design leaves core cables fixed to the housing
- 650-watt capacity limits headroom for high-draw hardware
Good fit if
- You want semi-modular cable management to minimize case clutter.
- You need a 650W ATX supply with dual EPS12V connectors.
- You prefer internal Japanese capacitors rated up to 105°C.
Skip if
- You require fully modular cables for custom routing.
- You want higher efficiency than the 80 PLUS Bronze rating provides.
- You run high-end components requiring more than 650 watts.
Verdict: Corsair CX650M 650W Semi-Modular PSU provides reliable 80 PLUS Bronze power with Japanese capacitors and dual EPS12V support. It serves as a practical, semi-modular power solution for mid-range desktop builds.
Corsair RM1000x Shift 1000W ATX 3.1 PSU
Best for: high-end builds needing ATX 3.1 power
- Wattage
- 1000W
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Version
- PCIe 5.1
- Dimensions
- 7.09 × 5.91 × 5.08 inches
- Weight
- 4.2 pounds
View on Amazon: Corsair RM1000x Shift 1000W ATX 3.1 PSU (paid link)
The Corsair RM1000x Shift is a 1000W ATX power supply built for modern high-draw hardware. It supports ATX 3.1 and PCIe 5.1 power delivery standards to manage transient loads. The fully modular design uses compact Type 5 micro-fit connectors to save space inside your enclosure. Built with 105°C-rated Japanese capacitors, it includes a Zero RPM fan mode for low-load operation. This model fits your build if you run high-power components.
Pros
- 1000W continuous output compliant with ATX 3.1 and PCIe 5.1 standards
- Fully modular cabling with Type 5 Gen 1 micro-fit connectors
- 100% Japanese 105°C-rated electrolytic capacitors
- Zero RPM fan mode shuts fan off during low to medium loads
Cons
- Measures 7.09 inches long, requiring sufficient chassis clearance
- Requires Type 5 micro-fit connectors rather than standard modular cables
Good fit if
- You need 1000W of power for ATX 3.1 and PCIe 5.1 hardware.
- You prefer compact Type 5 micro-fit cables to reduce cable bulk.
- You want silent cooling at low and medium system workloads.
Skip if
- You have a compact case unable to accommodate a 7.09-inch long unit.
- You plan to reuse standard legacy modular PSU cable sets.
Verdict: Corsair RM1000x Shift 1000W ATX 3.1 PSU provides 1000W of ATX 3.1 and PCIe 5.1 power using compact Type 5 micro-fit cabling. It is a solid choice for modern high-demand hardware setups that support its 7.09-inch length.
Corsair HX1500i 1500W Platinum ATX 3.1 PSU
Best for: ultra-high-power builds needing Platinum efficiency
- Wattage
- 1500 Watts
- Efficiency Rating
- 80 Plus Platinum
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- Fan Size
- 140mm
- PCIe Version
- PCIe 5.1
View on Amazon: Corsair HX1500i 1500W Platinum ATX 3.1 PSU (paid link)
The Corsair HX1500i delivers 1500 watts of continuous power with 80 Plus Platinum efficiency for high-draw hardware configurations. You get ATX 3.1 and PCIe 5.1 compliance to handle transient power spikes smoothly. Fully modular cables simplify case routing, while a 140mm fluid dynamic bearing fan offers quiet cooling with a Zero RPM mode. Built-in iCUE software integration allows real-time power monitoring and multi-rail switching directly from your desktop.
Pros
- 80 Plus Platinum efficiency rating
- 1500W capacity compliant with ATX 3.1 and PCIe 5.1
- 140mm fluid dynamic bearing fan with Zero RPM mode
- Fully modular cabling configuration
- iCUE software support for monitoring and rail control
Cons
- Long 7.87-inch housing requires a larger chassis
- Heavy 5.3-pound unit weight
Good fit if
- You run high-wattage hardware setups requiring up to 1500W of power.
- You want 80 Plus Platinum electrical efficiency.
- You use Corsair iCUE software to track power metrics and toggle rail modes.
Skip if
- You use a compact chassis that cannot clear a 7.87-inch power supply.
- You run a standard build that does not need 1500W of output.
Verdict: Corsair HX1500i 1500W Platinum ATX 3.1 PSU provides immense 1500W capacity alongside ATX 3.1 compliance and 80 Plus Platinum efficiency. Its 7.87-inch length requires a roomy case, but you gain fully modular cabling and in-depth iCUE power telemetry.
Corsair HX1200i Shift 1200W ATX 3.1 PSU
Best for: high-end builds using Corsair iCUE LINK components
- Wattage
- 1200W
- Efficiency Rating
- Cybenetics Platinum
- Modularity
- Fully-modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- PCIe Version
- PCIe 5.1
View on Amazon: Corsair HX1200i Shift 1200W ATX 3.1 PSU (paid link)
The Corsair HX1200i Shift 1200W Power Supply delivers 1200W of Cybenetics Platinum-certified power with ATX 3.1 and PCIe 5.1 compliance. It includes a native 12V-2x6 cable for modern graphics cards and side-mounted modular connectors for easier cable routing. You also get an integrated iCUE LINK System Hub capable of synchronizing up to 24 compatible devices directly. This unit suits you if you build a high-demand PC with Corsair iCUE LINK hardware.
Pros
- Integrated iCUE LINK hub controls up to 24 devices
- Side-mounted modular connectors ease cable access
- Native 12V-2x6 cable supports PCIe 5.1 graphics cards
- Cybenetics Platinum efficiency rating up to 91%
Cons
- Long 7.87-inch housing requires ample case space
- Side-facing connectors require clearance along the PSU chamber
Good fit if
- You need 1200W of power with Cybenetics Platinum efficiency.
- You plan to run up to 24 Corsair iCUE LINK cooling devices.
- You use a modern graphics card requiring a native 12V-2x6 connection.
Skip if
- You have a compact PC case that cannot accommodate a 7.87-inch PSU depth.
- You use a case lacking clearance for side-facing modular connectors.
Verdict: Corsair HX1200i Shift 1200W Power Supply combines high 1200W output and Cybenetics Platinum efficiency with an integrated iCUE LINK hub and side-mounted modular cables. It is a capable choice if your case accommodates its 7.87-inch length and side connector layout.
Corsair RM750x Shift White 750W Power Supply
Best for: white mid-range ATX 3.1 PC builds
- Wattage
- 750W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- Fan Size
- 140mm
- PCIe Version
- PCIe 5.1
View on Amazon: Corsair RM750x Shift White 750W Power Supply (paid link)
This is a white 750W fully modular power supply built for modern ATX systems. It complies with ATX 3.1 and PCIe 5.1 standards to handle high transient power spikes reliably. The unit features side-mounted modular connections using compact micro-fit cables, making cable routing easier inside compatible cases. With 80 Plus Gold efficiency and a 140mm fluid dynamic bearing fan, it suits you if you need clean cable management in a mid-range build.
Pros
- Side-mounted modular panel allows easier cable installation
- Certified for ATX 3.1 and PCIe 5.1 hardware standards
- 80 Plus Gold efficiency rating
- 100% 105°C-rated Japanese electrolytic capacitors
Cons
- Side connector layout requires dedicated chassis clearance behind the PSU
- Uses Type 5 Gen 1 micro-fit cables rather than standard Type 4 connectors
Good fit if
- You have an ATX case with sufficient side clearance for modular plugs.
- You want ATX 3.1 and PCIe 5.1 compliance for a mid-range white build.
Skip if
- You use a compact case that blocks access to side-facing PSU ports.
- You need more than 750W of output for high-power dual-GPU systems.
Verdict: Corsair RM750x Shift White 750W Power Supply delivers ATX 3.1 compliance and 80 Plus Gold efficiency with a side-facing modular interface. It provides solid 750W power delivery for mid-range builds with compatible case clearance.
Specifications side by side
| Spec | Corsair SF 1000W Fully Modular PSU | Corsair RM850x 850W Fully Modular ATX 3.1 PSU | Corsair CX-M Modular Power Supply | Corsair RM1000x 1000W ATX 3.1 PSU | Corsair RM1000e 1000W ATX Power Supply | Corsair RM850x Shift 850W White ATX Power Supply | Corsair RM750x Shift White 750W ATX Power Supply | Corsair Individually Sleeved PSU Cables Starter Kit | Corsair Type 4 Gen 4 Sleeved PSU Cable Pro Kit | Corsair RM550x 550W 80 Plus Gold PSU | Corsair 650W Semi-Modular ATX Power Supply | Corsair RM1000x Shift 1000W ATX 3.1 PSU | Corsair HX1500i 1500W Platinum ATX 3.1 PSU | Corsair HX1200i Shift 1200W ATX 3.1 PSU | Corsair RM750x Shift White 750W Power Supply |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wattage | 1000 Watts | 850W | not specified | 1000W | 1000 Watt | 850W | 750W | not specified | not specified | 550W | 650 Watt | 1000W | 1500 Watts | 1200W | 750W |
| Efficiency Rating | 80 Plus | Cybenetics Gold | 80 Plus Bronze | Cybenetics Gold | 80 PLUS Gold | 80 Plus Gold | 80 Plus Gold | not specified | not specified | 80 PLUS Gold | 80 Plus Bronze | not specified | 80 Plus Platinum | Cybenetics Platinum | 80 Plus Gold |
| Modularity | Fully Modular | Fully Modular | Modular | Fully Modular | Fully Modular | Fully Modular | Fully Modular | not specified | not specified | Fully Modular | Semi-Modular | Fully Modular | Fully Modular | Fully-modular | Fully Modular |
| ATX Version | not specified | ATX 3.1 | not specified | ATX 3.1 | not specified | ATX 3.1 | ATX 3.1 | not specified | not specified | not specified | not specified | ATX 3.1 | ATX 3.1 | ATX 3.1 | ATX 3.1 |
| PCIe Connector Type | not specified | 12V-2x6 | not specified | 12V-2x6 | not specified | PCIe 5.1 | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 12V-2x6 | not specified |
| Fan Size | not specified | not specified | not specified | not specified | not specified | not specified | 140mm | not specified | not specified | 135mm | not specified | not specified | 140mm | not specified | 140mm |
| Warranty | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 2 Yr | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Form Factor | not specified | ATX | not specified | ATX | ATX | ATX | ATX | not specified | not specified | ATX | ATX | ATX | ATX | ATX | ATX |
| PCIe Version | not specified | PCIe 5.1 | not specified | PCIe 5.1 | not specified | PCIe 5.1 | PCIe 5.1 | not specified | not specified | not specified | not specified | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 |
| Connector | not specified | 12V-2x6 Connector | not specified | 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 |
| Size | 1000W | 850W | not specified | 1000W | 1000W | 850W | 750W | 75 cm | 1 | 550W | 650W | 1000W | 1500 Watts | 1200W | 750W |
| Dimensions | 7.6 × 9.4 × 11.3 inches | 2.3 × 3.39 × 5.91 inches | not specified | 2.3 × 3.39 × 5.91 inches | 5.91 × 5.51 × 3.39 inches | 6.3 × 5.91 × 3.39 inches | 6.3 × 5.91 × 3.39 inches | 29.5 × 2.44 × 0.63 inches | 29.5 × 1.02 × 0.63 inches | 6.3 × 5.91 × 3.39 inches | 5.91 × 5.51 × 3.39 inches | 7.09 × 5.91 × 5.08 inches | 7.87 × 5.91 × 3.39 inches | 7.87 × 5.91 × 3.45 inches | 6.3 × 5.91 × 3.39 inches |
| Weight | 2.31 pounds | 3.9 pounds | not specified | 6.88 pounds | 3.66 pounds | 3.75 pounds | 3.75 pounds | 12 ounces | 1.51 pounds | 3.31 pounds | 5.01 pounds | 4.2 pounds | 5.3 pounds | 5.16 pounds | 3.75 pounds |
| Color | Black | Black | not specified | Black | Black | White | White | Red | Black | Black | Black | Black | Black | Black | White |
| Model | not specified | not specified | not specified | not specified | not specified | not specified | CP-9020273-NA | CP-8920216 | CP-8920222 | CP-9020197-NA | CP-9020221-NA | CP-9020253-NA | CP-9020261-NA | CP-9020267-NA | CP-9020273-NA |
Comparing the Corsair Power Supply Lineup
Modern systems benefit from units equipped with ATX 3.1 standards and PCIe 5.1 support. Models like the Corsair RM850x and Corsair HX1500i supply native 12V-2x6 connectors, fully modular cables, and efficiency ratings reaching 80 Plus Gold or 80 Plus Platinum. You want these specifications if you run current-generation graphics cards or demand high wattage with clean cable management.
Standard desktop builds require less overhead. The Corsair CX-M provides 80 Plus Bronze efficiency with modular cabling for general computing tasks. For compact enclosures requiring high output, the Corsair SF 1000W Fully Modular PSU delivers 1000 watts in a fully modular format. These choices suit you if you prioritize everyday power delivery over modern PCIe 5.1 connections.
Where Corsair Fits Your Build
Corsair suits builders assembling mid-range to extreme-output systems. The hardware spans from 550W units for modest setups up to 1500W platforms for heavy workloads. Physical dimensions vary significantly, starting at compact 2.31-pound enclosures up to 7.87-inch-long chassis that need full-sized ATX clearance. External aesthetics provide black and white finishes, along with red paracord accessories.
Notable catalog gaps exist across this selection. You will not find sub-550W options for ultra-low-draw PCs, completely non-modular designs, or any built-in RGB lighting. Efficiency tops out at 80 Plus Platinum, leaving out Titanium-rated models within this lineup.
When you match PSU clearance dimensions for a build, evaluate each corsair PC case by its supported power supply length specifications.
How to Choose a Corsair Power Supply
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Matching Power Supply Dimensions
Check your PC case clearance before choosing a unit. Standard enclosures accept lengths around 5.9 inches. High-capacity models extend deeper into the bottom chamber. The Corsair HX1500i measures 7.87 inches in length, which reduces room for internal drive cages and cable bunching. Measure your case compartment from the rear bracket to the nearest obstruction. Leave at least one inch of extra clearance for cable bends. Compact enclosures need shorter units to avoid pinching modular plugs against internal metal partitions.
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Evaluating 80 Plus Efficiency
Compare the 80 Plus certification badge on the spec sheet. This specification defines how effectively the unit converts wall power into internal system energy. An 80 Plus Bronze unit like the Corsair CX650M handles standard daily computing loads. Step up to 80 Plus Gold or Platinum if your system runs heavy continuous tasks. Higher efficiency levels waste less energy as heat during conversion. Lower thermal output helps internal components run cooler. Match the badge to your daily operational workload and ventilation setup.
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Verifying Modern ATX Specifications
Check for ATX 3.1 and PCIe 5.1 compatibility if you use modern graphics hardware. These specifications guarantee dedicated 12V-2x6 power connections built directly into the unit. The Corsair RM850x includes this connector to supply high wattage through a single line without multi-cable adapters. Older configurations rely on traditional 8-pin PCIe cables. Verify your graphics card power input type before buying. Matching native ATX 3.1 delivery to compatible video cards simplifies system assembly and prevents excess cable clutter inside the chamber.
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Selecting Modular Cable Layouts
Determine how much cable flexibility your build demands. Fully modular models let you detach every lead, so you only plug in what your motherboard, processor, and peripherals require. Semi-modular models maintain permanently attached main motherboard lines while leaving secondary peripheral ports detachable. The Corsair CX-M Modular Power Supply provides modular flexibility for budget-focused builds. Choose fully modular designs when building inside compact cases with limited routing channels. Choose semi-modular units if you prefer fixed essential wiring that stays connected permanently.
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Accommodating Side Interface Designs
Review cable connector placement if you consider a Shift series unit. Traditional power supplies place modular sockets on the back face pointing toward the drive bays. Models such as the Corsair RM750x Shift position modular ports on the side panel. This design provides direct routing into the rear motherboard tray. However, you must verify your case has adequate clearance between the side panel and the power supply frame. Measure this lateral void to ensure modular cables can plug in without pressing hard against the side door.
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Confirming Accessory Cable Compatibility
Check connector generation before upgrading to custom-sleeved kits. Corsair modular power supplies use specific pin assignments and connector sizes across generations. The Corsair Type 4 Gen 4 Sleeved PSU Cable Pro Kit supports compatible Type 4 units using standard terminal dimensions. Newer compact or Shift supplies utilize smaller Type 5 micro-fit connections instead. Never force mismatched cable types into modular sockets, as pin assignments differ. Verify your power supply generation on its specification label to guarantee full pinout alignment before adding aftermarket cables.
Frequently asked questions
Which Corsair power supplies feature native 12V-2x6 connectors?
Several modern ATX 3.1 models in the lineup include native 12V-2x6 connectors. For example, the Corsair RM850x and Corsair RM1000x provide this connection directly for current graphics cards. This interface supplies high wattage over a single cable without external adapters, aligning your desktop hardware with updated ATX 3.1 and PCIe 5.1 power delivery standards.
What is the difference between Corsair fully modular and semi-modular power supplies?
A fully modular unit lets you detach every cable, while a semi-modular unit permanently attaches core wiring. The semi-modular Corsair CX650M keeps essential motherboard leads fixed while letting you add optional runs. In contrast, fully modular models like the Corsair RM1000e let you attach only the specific cables your setup requires, reducing clutter inside your PC case.
What makes Corsair Shift series power supplies different from standard models?
Corsair Shift models place modular cable sockets on the side panel rather than the rear. Units such as the RM750x Shift and RM1000x Shift route cables directly into your chassis side chamber. This layout utilizes Type 5 micro-fit connectors to make cable installation easier, provided your PC case offers sufficient clearance along the power supply compartment.
Which Corsair power supplies include software monitoring or iCUE integration?
Corsair offers digital telemetry on select high-output units like the HX1500i and HX1200i Shift. The Corsair HX1500i supports in-depth iCUE power telemetry for tracking system metrics and electrical efficiency. Similarly, the HX1200i Shift features an integrated iCUE LINK hub, allowing you to connect and coordinate compatible iCUE LINK hardware components directly through your power supply.
Can you install custom sleeved cables on any Corsair modular power supply?
You must match cable sets to your specific power supply generation and pin layout. The Corsair Type 4 Gen 4 Sleeved Cable Pro Kit is built specifically for Type 4 modular units and incorporates in-line capacitors. Compact units like the RM1000x Shift rely on smaller Type 5 micro-fit connections, meaning standard Type 4 cable kits will not plug into Shift-series modular interfaces.
What efficiency ratings do Corsair power supplies carry?
Corsair units span from entry-level 80 Plus Bronze up to high-end Platinum efficiency. The CX-M series and CX650M provide 80 Plus Bronze ratings for everyday power conversion. Mid-to-high models like the RM550x, RM850x Shift, and RM1000e deliver 80 Plus Gold efficiency, while heavy-duty platforms like the HX1500i achieve 80 Plus Platinum for maximum reduction in wasted heat.
Which Corsair power supply should you choose for an all-white desktop build?
You can choose the Corsair RM750x Shift White or the RM850x Shift White for matching aesthetic setups. Both models feature an all-white chassis paired with 80 Plus Gold efficiency, ATX 3.1 compliance, and PCIe 5.1 support. Their side-mounted modular connector layout helps you manage clean cable runs within white cases that supply adequate side clearance.