Computer Power Supplies

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Corsair RM1000e 1000W 80 Plus Gold Fully Modular ATX Power Supply (Black)

Corsair RM1000e 1000W 80 Plus Gold Fully Modular ATX Power Supply (Black)

B&H # CORM1000EPS MFR # CP-9020264-NA
Key Features
  • 1000W Single +12V Rail
  • Internal Cooling Fan
  • Intel ATX12V Version 3.0
  • 12VHPWR 16-Pin Connector
$15999
Reg. $179.99
Save $20.00
In Stock
Corsair RM850e 850W 80 Plus Gold Fully Modular ATX Power Supply (Black)

Corsair RM850e 850W 80 Plus Gold Fully Modular ATX Power Supply (Black)

B&H # CORM850EPS MFR # CP-9020263-NA
Key Features
  • 850W Single +12V Rail
  • Internal Cooling Fan
  • Intel ATX12V Version 3.0
  • 12VHPWR 16-Pin Connector
$11999
Reg. $129.99
Save $10.00
In Stock

SeaSonic Electronics 750W FOCUS GX ATX 3.0 80 PLUS Gold Desktop Power Supply

B&H # SEA3FCSGX750 MFR # ATX3-FOCUS-GX-750
Key Features
  • 750W Single +12V Rail
  • 135mm Cooling Fan
  • ATX Version 3.0
  • 1 x 16-Pin 12VHPWR Connector
$8999
Reg. $129.99
Save $40.00
In Stock

SeaSonic Electronics FOCUS 850W 80 PLUS Gold ATX 12V Power Supply

B&H # SESSR850FX MFR # SSR-850FX
Key Features
  • 850W Single +12V Rail
  • Intel ATX 12V Form Factor
  • 6 x PCI-E Connectors
  • 10 x SATA Connectors
$10499
Reg. $129.99
Save $25.00
In Stock

Thermaltake Smart 600W 80 PLUS Power Supply

B&H # THPSSPD600NP MFR # PS-SPD-0600NPCWUS-W
Key Features
  • 600W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 2.3
  • 2 x PCIe Connectors
$4099
In Stock

Thermaltake Smart 500W 80 PLUS Power Supply

B&H # THPSSPD500NP MFR # PS-SPD-0500NPCWUS-W
Key Features
  • 500W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 2.3
  • 2 x PCIe Connectors
$3906
In Stock

Corsair CX-M Series CX650M 650W 80 PLUS Bronze Semi-Modular Power Supply

B&H # COCP9020221N MFR # CP-9020221-NA
Key Features
  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • ATX 12V Version 2.4
  • 2 x PCIe Connectors
$7999
Temporarily Out of Stock
Expected availability: 7-14 Business Days

SeaSonic Electronics FOCUS Plus 850W 80-PLUS Platinum Modular Power Supply

B&H # SESSR850PX MFR # SSR-850PX
Key Features
  • 850W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 2.3
  • 6 x PCI-E Connectors
$13499
Reg. $189.99
Save $55.00
In Stock

SeaSonic Electronics 1000W FOCUS GX ATX 3.0 80 PLUS Gold Desktop Power Supply

B&H # SEA3FCGX1000 MFR # ATX3-FOCUS-GX-1000
Key Features
  • 1000W Single +12V Rail
  • 135mm Cooling Fan
  • ATX Version 3.0
  • 1 x 16-Pin 12VHPWR Connector
$13999
Reg. $199.99
Save $60.00
In Stock

SeaSonic Electronics Vertex GX-1200W 80-PLUS Gold PCIE5 Modular Power Supply

B&H # SEVRTXGX1200 MFR # VERTEX GX-1200
Key Features
  • 1200W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V
  • 1 x PCIe 5.0 Connector
$19999
Reg. $249.99
Save $50.00
In Stock
Other Buying Options

Gigabyte P650G 650W 80 PLUS Gold Power Supply

B&H # GIP650G80PG MFR # GP-P650G GUS1
Key Features
  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX 12V v2.31 Form Factor
  • 4 x PCIe 6+2-Pin Connectors
$5999
Reg. $69.99
Save $10.00
In Stock

SeaSonic Electronics FOCUS (2021) 750W 80 PLUS Platinum Modular SFX Power Supply (Black)

B&H # SEFSPX75021 MFR # FOCUS SPX-750(2021)
Key Features
  • Full Modular Design
  • 750W Single +12V Rail
  • 92mm Cooling Fan
  • Intel SFX 12V Form Factor
$10999
Reg. $169.99
Save $60.00
In Stock

Gigabyte UD750GM 750W 80 PLUS Gold Modular ATX Power Supply

B&H # GIGPUD750GM MFR # GP-UD750GM
Key Features
  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 2.31
  • 4 x PCIe Connectors
$8999
Reg. $99.99
Save $10.00
11% Coupon Applied in Cart
In Stock

Corsair CX Series CX650 650W 80 PLUS Bronze ATX Power Supply

B&H # COCX650PS MFR # CP-9020278-NA
Key Features
  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • ATX12V Version 2.31
  • 2 x PCIe Connectors
$6499
Reg. $69.99
Save $5.00
Offer ends Jun 23 at 11:59 PM EDT
In Stock

SeaSonic Electronics Focus Gold Series 550W 80 Plus Gold Semi-Modular ATX Power Supply

B&H # SESSR550FM MFR # SSR-550FM
Key Features
  • 550W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 2 x PCI-E Connectors
$7999
In Stock

Corsair RM850x 850W 80 PLUS Gold Modular Power Supply

B&H # COCP9020200N MFR # CP-9020200-NA
Key Features
  • 850W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V Version 2.4
  • 3 x CPU Connectors
$13499
Reg. $149.99
Save $15.00
Offer ends Jun 23 at 11:59 PM EDT
In Stock

SeaSonic Electronics S12III Series 650W 80 Plus Bronze ATX Power Supply

B&H # SESSR650GB3 MFR # SSR-650GB3
Key Features
  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 4 x 8/6-Pin PCIe Connectors
$6900
In Stock
Other Buying Options

SeaSonic Electronics FOCUS Plus 750W 80-PLUS Platinum Modular Power Supply

B&H # SESSR750PX MFR # SSR-750PX
Key Features
  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 2.3
  • 4 x PCI-E Connectors
$11999
Reg. $129.99
Save $10.00
In Stock

ASUS 850W TUF Gaming Gold Modular ATX Power Supply

B&H # ASTUFGM850G MFR # TUF-GAMING-850G
Key Features
  • 850W Single +12V Rail
  • 135mm Cooling Fan
  • ATX12V Version 3.0 Intel Form Factor
  • 600W 16-Pin PCIe Connector
$12999
In Stock

Corsair RM750e 750W 80 Plus Gold Fully Modular ATX Power Supply (Black)

B&H # CORM750E MFR # CP-9020262-NA
Key Features
  • 750W Single +12V Rail
  • Internal Cooling Fan
  • Intel ATX12V Version 3.1
  • 12VHPWR 16-Pin Connector
$9999
Temporarily Out of Stock
Expected availability: 7-14 Business Days

Corsair HX1000i 1000W 80 Plus Platinum Modular ATX Power Supply (Black)

B&H # COHX1000IPS MFR # CP-9020259-NA
Key Features
  • 1000W Single +12V Rail
  • Internal 140mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 12VHPWR 16-Pin Connector
$25999
In Stock

Corsair CX-M Series CX750M 750W 80 PLUS Bronze Semi-Modular Power Supply

B&H # COCP9020222N MFR # CP-9020222-NA
Key Features
  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • ATX 12V Version 2.4
  • 4 x PCIe Connectors
$8999
In Stock

Corsair RM750x 750W 80 PLUS Gold Modular Power Supply

B&H # COCP9020199N MFR # CP-9020199-NA
Key Features
  • 750W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V Version 2.4
  • 2 x CPU Connectors
$13999
In Stock

MSI 1300W MEG Ai1300 PCIE5 ATX 3.0 Power Supply

B&H # MSMEGAI1300P MFR # MEG AI1300P PCIE5
Key Features
  • 1300W Peak Performance
  • Dedicated PCIe 5.0 Connector
  • Fully Modular Design
  • 80 PLUS Platinum Efficiency Rating
$30999
Reg. $359.99
Save $50.00
In Stock

Corsair CX Series CX750 750W 80 PLUS Bronze ATX Power Supply

B&H # COCX750PS MFR # CP-9020279-NA
Key Features
  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • ATX12V Version 2.31
  • 2 x PCIe Connectors
$7499
Reg. $79.99
Save $5.00
Offer ends Jun 23 at 11:59 PM EDT
In Stock

MSI MAG A850GL PCIE5 850W 80 Plus Modular Power Supply

B&H # MSMAGA850GLP MFR # MAG A850GL PCIE5
Key Features
  • 850W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 1 x PCIe 5.0 16-Pin Connector
$11299
Temporarily Out of Stock
Expected availability: Jun 27, 2024

Gigabyte UD850GM PG5 850W 80 PLUS Gold Modular Power Supply (White)

B&H # GIGPUD85GP5W MFR # GP-UD850GM PG5W
Key Features
  • 850W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V 3.0
  • 5 x PCIe Connectors
$13499
Reg. $149.99
Save $15.00
In Stock

Corsair 1000W SF-L 80 Plus Gold Modular Power Supply

B&H # COSF1000LPS MFR # CP-9020246-NA
Key Features
  • 1000W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 12VHPWR Connector
$17999
In Stock

Choosing Computer Power Supplies

Power supplies are essential components for many desktop computer systems. They sit inside the computer chassis and feature the socket that a power cord connects to. Choosing the right power supply is especially important for gamers and others who may be custom building PCs, since their choice determines if all their machines' components are able to run efficiently.

 

Choosing and Installing a Desktop PC Power Supply

Computer power supplies from brands such as EVGA and Corsair are ranked by efficiency in categories ranging from Bronze to Titanium. This creates a selection of products at different price points, to meet varying power needs. Choose a wattage that meets or exceeds the total watts used by all of your system's components, such as hard drives and graphics cards. Most computers won't need more than 750W, while large, more component-intensive systems require 1000W or 1200W power supplies.

When installing a power supply inside a computer case, it's important to make sure it doesn't restrict airflow so the inner workings remain cooled down. The power supply also has its own cooling fan, which runs with minimal noise. For laptop-based workstations, there are external breakaway box power supplies and expansion chassis that may provide additional PCIe slots.


What Makes a Power Supply Modular

You may see some power supply models described as modular, which means that their internal power cables are detachable from the supply, for a more customized installation. This is especially useful for gaming PC builds, because it lets you attach only the cables you need to the components inside the system, creating more room for airflow. In non-modular power supplies, the cables are permanently attached.


How Server Power Supplies Work

Servers need their own type of power supply for their unique requirements. They feature a different form factor to fit inside rack-mounted servers, and feature redundancies to help prevent any downtime, allowing servers to run continuously. Some server power supplies also offer switches so you can turn off the supply and the server with a switch rather than by removing the power cord.


Whether you're building your own personal PC or running a busy enterprise, B&H Photo and Video has the power supply gear you need to keep them running efficiently.