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CORSAIR RMx Series RM1000x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 1000 Watts
CORSAIR RMx Series RM1000x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 1000 Watts
  • Fans: 1 x 140 mm
  • Main Connector: 24Pin
  • Input Voltage: 100 - 240 V
  • Input Frequency Range: 47 - 63 Hz
  • Model #: CP-9020271-NA
  • Item #: N82E16817139334
  • Return Policy: Standard Return Policy
Seasonic VERTEX PX-1000, 1000W 80+ Platinum, ATX 3.0&PCIe 5.0 Ready, Full-Modular, ATX Form Factor, Low Noise, Premium Japanese Capacitor, 12 Year Warranty, Nvidia RTX 30/40 Super, AMD GPU Compatible
Seasonic VERTEX PX-1000, 1000W 80+ Platinum, ATX 3.0&PCIe 5.0 Ready, Full-Modular, ATX Form Factor, Low Noise, Premium Japanese Capacitor, 12 Year Warranty, Nvidia RTX 30/40 Super, AMD GPU Compatible
  • Fans: 1 x 135 mm
  • Over Voltage Protection: Yes
  • Input Voltage: 100 - 240 V
  • Input Frequency Range: 50/60 Hz
  • Model #: VERTEX PX-1000
  • Item #: N82E16817151267
  • Return Policy: Standard Return Policy
EVGA SuperNOVA 1600 P+, 80+ Platinum 1600W, Fully Modular, 10 Year Warranty, Includes FREE Power On Self Tester, Power Supply 220-PP-1600-X1
EVGA SuperNOVA 1600 P+, 80+ Platinum 1600W, Fully Modular, 10 Year Warranty, Includes FREE Power On Self Tester, Power Supply 220-PP-1600-X1
  • Fans: 1 x 135mm Double Ball Bearing Fan
  • Main Connector: 24Pin
  • +12V Rails: Single
  • PCI-Express Connector: 14 x 6+2-Pin
  • Model #: 220-PP-1600-X1
  • Item #: N82E16817438232
  • Return Policy: Standard Return Policy
AZZA PSAZ-550W French Version 550 W Intel ATX12V 80 PLUS BRONZE Certified Non-Modular Power Supply
AZZA PSAZ-550W French Version 550 W Power Supply
  • Fans: 1 x 120mm fan
  • +12V Rails: Single
  • Over Voltage Protection: UVP, OVP, OPP, OCP, SCP
  • Input Voltage: 100 - 240 V
  • Model #: PSAZ-550W French Version
  • Item #: N82E16817517022
  • Return Policy: Standard Return Policy
  • $74.99
  •  
  • $49.99 
  • Save: 33%
  • $34.99 after $15.00 rebate
  • $7.99 Shipping
Thermaltake Smart BX3 750W 80Plus Bronze ATX 3.1 Standard Power Supply; Non-Modular; PS-SPD-0750NNFABU-3; 5 Year Warranty
Thermaltake Smart BX3 750W 80Plus Bronze ATX 3.1 Standard Power Supply; Non-Modular; PS-SPD-0750NNFABU-3; 5 Year Warranty
  • Fans: 12cm FDB Fan
  • Power Good Signal: 100-150 msec
  • Hold-up Time: > 17msec at 80% load
  • Input Voltage: 100 - 240 V
  • Model #: PS-SPD-0750NNFABU-3
  • Item #: N82E16817153464
  • Return Policy: Standard Return Policy
NZXT C1000 - C Series ATX 1000 Watt 80 Plus Gold v2 (2022) Full-modular Power Supply, US Power Cord
NZXT C1000 - C Series ATX 1000 Watt 80 Plus Gold v2 (2022) Full-modular Power Supply, US Power Cord
  • Fans: 1 x 135 mm
  • Main Connector: 24Pin
  • PCI-Express Connector: 6 x 6+2-Pin
  • SATA Power Connector: 6
  • Model #: PA-0G1BB-US
  • Item #: 1HU-001J-000A7
  • Return Policy: Standard Return Policy
Super Flower Leadex V Platinum PRO White 850W ATX 80 PLUS PLATINUM Certified Power Supply, Smallest 130mm 850W ATX PSU, Patent Super Connector, Full Modular, Ultra-Flexible Flat Cable, SF-850F14TP(WH)
  • $179.99
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  • $154.99 
  • Save: 13%
  • $7.99 Shipping
CORSAIR RMx Series RM850x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 850 Watts
CORSAIR RMx Series RM850x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 850 Watts
  • Fans: 1 x 140 mm
  • Main Connector: 24Pin
  • Input Voltage: 100 - 240 V
  • Input Frequency Range: 47 - 63 Hz
  • Model #: CP-9020270-NA
  • Item #: N82E16817139333
  • Return Policy: Standard Return Policy
Seasonic PRIME PX-1600, 1600W 80+ Platinum, ATX 3.0 & PCIe 5.0 Ready, Full Modular, Low Noise, Premium Japanese Capacitor, Nvidia RTX 30/40 Super, AMD GPU Compatible, Ref# SSR-1600PD2
Seasonic PRIME PX-1600, 1600W 80+ Platinum, ATX 3.0 & PCIe 5.0 Ready, Full Modular, Low Noise, Premium Japanese Capacitor, Nvidia RTX 30/40 Super, AMD GPU Compatible, Ref# SSR-1600PD2
  • Fans: 1 x 135 mm Fluid Dynamic Bearing Fan
  • Dimensions: 8.3 x 6 x 3.4"
  • Weight: 6.17lbs
  • Max PSU Length: 210 mm
  • Model #: SSR-1600PD2
  • Item #: N82E16817151260
  • Return Policy: Standard Return Policy
  • $699.99
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  • $599.99 
  • Save: 14%
  • $7.99 Shipping
EVGA 700 BR 100-BR-0700-K1 700 W ATX12V / EPS12V SLI CrossFire 80 PLUS BRONZE Certified Non-Modular Power Supply
EVGA 700 BR 100-BR-0700-K1 700 W Power Supply
  • Fans: 1 x 120mm Long Sleeve Bearing Fan
  • Main Connector: 24Pin
  • +12V Rails: Single
  • PCI-Express Connector: 4 x 6+2-Pin
  • Model #: 100-BR-0700-K1
  • Item #: N82E16817438147
  • Return Policy: Standard Return Policy
AZZA PSAZ-750G French Version 750 W ATX 80 PLUS GOLD Certified Full Modular Power Supply
AZZA
AZZA PSAZ-750G French Version 750 W Power Supply
  • Fans: 120 mm
  • Main Connector: 20+4Pin
  • PCI-Express Connector: 4 x 6+2-Pin
  • SATA Power Connector: 6
  • Model #: PSAZ-750G French Version
  • Item #: N82E16817517027
  • Return Policy: Standard Return Policy
Thermaltake Toughpower PF3 1200W 80+ Platinum ATX 3.0 (PCI-E 5.0 600W 12VHPWR Connector included) Full Modular SLI/Crossfire Ready Power Supply, PS-TPD-1200FNFAPU-L
Thermaltake Toughpower PF3 1200W 80+ Platinum ATX 3.0 (PCI-E 5.0 600W 12VHPWR Connector included) Full Modular SLI/Crossfire Ready Power Supply, PS-TPD-1200FNFAPU-L
  • Fans: 1 x 120mm Fluid Dynamic Bearing Fan
  • Main Connector: 24Pin
  • +12V Rails: Single
  • PCI-Express Connector: 5 x 6+2-Pin 12VHPWR Support Wattage: 600W
  • Model #: PS-TPD-1200FNFAPU-L
  • Item #: N82E16817153443
  • Return Policy: Standard Return Policy
  • $339.99
  •  
  • $309.99 
  • Save: 8%
  • $7.99 Shipping

Computer power supplies convert the alternating current (AC) electricity from your wall outlet into direct current (DC), which is the kind of power your PC uses. They power all the other PC components with dedicated connectors that limit the need for additional outlets. ATX power supplies have a 20-pin connector, while the ATX12V versions have a 24-pin power connector to fit compatible motherboards. ATX12V motherboards have dual 12V rails that split amperage for added safety. Smaller power supplies take up little space in small laptop cases. Many power supply unit (PSU) models have an 80 PLUS® certification to ensure optimal energy efficiency.

The Right PSU Improves Your Computer's Performance

Whens putting together server power supplies, consider the needs of the PCs connected to the system. The computer wattage should be equal or greater than the amount of power required by all the components of your PC, and you can use simple online tools to calculate this value. You only need to input the model of your CPU, GPU, motherboard and other computer accessories, and these tools automatically calculate the minimum wattage you need. Using a computer power supply with a slightly higher wattage than needed provides protection for your components. The PSU runs at less than its maximum capacity, which could prevent overheating inside the computer case. Higher wattage computer power supplies let you upgrade your CPU or GPU in the future without worrying about power consumption. A PSU only consumes the amount of electricity your computer components use, so you won't have to worry about electric bills, even if you choose a model with a higher wattage. If you have a limited budget, choose a refurbished power supply that provides the same performance of a brand-new one at a lower price point.

80 PLUS Power Supplies Provide Optimal Energy Efficiency 

Many power supplies have an 80 PLUS certification that classifies their energy efficiency. PSUs with the standard 80 PLUS certification offer 80% efficiency at 20%, 50% and 100% loads. There are also Bronze, Silver, Gold, Platinum and Titanium 80 PLUS power supplies with higher energy efficiency than the standard 80 PLUS options. This helps maximize efficiency even in high-load situations.

ATX Power Supplies Connect Storage Drives

ATX computer power supplies feature a 20-pin main power connector and SATA connectors for storage drives that require an outside power source. ATX12V PSUs have a 24-pin main connector, and do not require the auxiliary power connector. This PSU standard supports dual 12V rails to power modern computer components safely and effectively. EPS12V power supplies use an 8-pin power connector for plugging directly into the processor. Many servers or high-end desktop computers use these power supplies for efficient energy options. There are also smaller power supplies that fit easily into laptop cases.

Modular Power Supplies Offer Flexibility

Many PSUs feature hardwired cables to power all the CPU accessories. Modular computer power supplies offer flexibility, as they let you add or remove cables as needed. Removing unneeded cables allows optimal airflow inside the computer case for protection against overheating.

Bestselling Power Supply Reviews:

Anonymous
1/26/2025 8:41:11 AM
Rock-Solid Power Supply for High-End Builds

“ I like that its future-proof with PCIe 5.1 and ATX 3.1 support. ”

MSI - MPG A1000G PCIE5, 80+ GOLD Full Modular Gaming PSU, 12V-2x6 Cable, 5080 5090 ATX 3.1 & PCIE 5.1 Ready, 1000W Power Supply, 10 Year Warranty
Scott Cousens
1/26/2025 5:03:15 AM
Quiet and Solid

“ ATX 3.1 ”

ASRock SL-850G 850W ATX3.1 & PCIe5.1 80 PLUS GOLD Certified Full Modular Power Supply
Frederick James
1/17/2025 8:31:01 AM
This review for ASRock review rebate program

“ -ATX 3.1, ready to support the latest components on the market. ”

ASRock SL-1000G 1000W ATX3.1 & PCIe5.1 80 PLUS GOLD Certified Full Modular Power Supply
Frederick James
1/17/2025 8:26:36 AM
This review for ASRock review rebate program

“ -ATX 3.1, ready to support the latest components on the market. ”

ASRock SL-850G 850W ATX3.1 & PCIe5.1 80 PLUS GOLD Certified Full Modular Power Supply
Frederick James
1/17/2025 8:24:54 AM
This review for ASRock review rebate program

“ -ATX 3.1, ready to support the latest components on the market. ”

ASRock SL-750G 750W ATX3.1 & PCIe5.1 80 PLUS GOLD Certified Full Modular Power Supply
Frederick James
1/17/2025 8:22:47 AM
This review for ASRock review rebate program

“ -ATX 3.1, ready to support the latest components on the market. ”

ASRock SL-650G 650W ATX3.1 80 PLUS GOLD Certified Full Modular Power Supply
Aymen Abbood
1/8/2025 4:36:28 PM
Extremely well built unit

“ Seems to be a really good value and checks all the boxes of ATX 3.1, 12VHPWR, Gold rated. ”

ASRock SL-850G 850W ATX3.1 & PCIe5.1 80 PLUS GOLD Certified Full Modular Power Supply
Nate
1/7/2025 2:36:41 PM
Quiet, stable power for my system

“ Seems to check all the boxes for a high-quality modern gaming PSU (Cybernetics rated, ATX3.1, PCIe5.1, 10-year warranty). ”

ASRock SL-850G 850W ATX3.1 & PCIe5.1 80 PLUS GOLD Certified Full Modular Power Supply