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
$17999
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
$12999
In Stock

Thermaltake Toughpower GF3 850W 80 PLUS Gold Modular ATX Power Supply

B&H # THTPGF3850G MFR # PS-TPD-0850FNFAGU-4
Key Features
  • 850W Single +12V Rail
  • 135mm Fluid Dynamic Bearing Fan
  • 4 x PCIe Connectors
  • 12 x SATA Connectors
$10200
Reg. $129.00
Save $27.00
Offer ends May 31 at 8:15 PM EDT
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
Reg. $44.99
Save $4.00
Offer ends May 31 at 8:15 PM EDT
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 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
In Stock

Corsair RM1000x 1000W 80 PLUS Gold Modular Power Supply

B&H # COCP9020201N MFR # CP-9020201-NA
Key Features
  • 1000W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V Version 2.4
  • 3 x CPU Connectors
$17499
Reg. $189.99
Save $15.00
In Stock

MSI MAG A650GL 650W 80 Plus Modular Power Supply

B&H # MSMAGA650GL MFR # MAG A650GL
Key Features
  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • 4 x PCIe 6+2-Pin Connectors
  • 6 x SATA Connectors
$7999
In Stock

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
Offer ends May 31 at 8:15 PM EDT
In Stock

Thermaltake Toughpower GF3 1200W 80 PLUS Gold Modular ATX Power Supply

B&H # THTPGF31200G MFR # PS-TPD-1200FNFAGU-4
Key Features
  • 1200W Single +12V Rail
  • 135mm Fluid Dynamic Bearing Fan
  • 4 x PCIe Connectors
  • 12 x SATA Connectors
$15649
Reg. $199.99
Save $43.50
Offer ends May 31 at 8:15 PM EDT
In Stock

MSI MAG A750GL PCIE5 750W 80 Plus Modular Power Supply

B&H # MSMAGA750GLP MFR # MAG A750GL PCIE5
Key Features
  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 1 x PCIe 5.0 16-Pin Connector
$8999
In Stock

Cooler Master MWE Gold V2 850W 80 PLUS Gold Modular Power Supply

B&H # COMWE850G2 MFR # MPE-8501-AFAAG-US
Key Features
  • 850W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Form Factor
  • 4 x PCIe Connectors
$9499
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
$32499
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
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

ASUS ROG Thor 1200W Platinum II 80 PLUS Modular Power Supply

B&H # ASRT1200P2G MFR # ROG-THOR-1200P2-GAMING
Key Features
  • 1200W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX 12V Specification
  • 9 x PCIe Connectors
$34499
Reg. $354.99
Save $10.00
Offer ends May 31 at 8:15 PM EDT
Special Order
Expected availability: 3-7 Business Days

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
Offer ends May 31 at 8:15 PM EDT
In Stock
New Release

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
$6499
Reg. $69.99
Save $5.00
Offer ends May 31 at 8:15 PM EDT
In Stock

SeaSonic Electronics 850W FOCUS GX ATX 3.0 80 PLUS Gold Desktop Power Supply

B&H # SEA3FCSGX850 MFR # ATX3-FOCUS-GX-850
Key Features
  • 850W Single +12V Rail
  • 135mm Cooling Fan
  • ATX Version 3.0
  • 1 x 16-Pin 12VHPWR Connector
$10999
Reg. $159.99
Save $50.00
Offer ends May 31 at 8:15 PM EDT
Special Order
Expected availability: 2-4 Weeks

SeaSonic Electronics Vertex PX-1000 1000W 80 Plus Platinum Modular Power Supply

B&H # SEVRTXPX1000 MFR # VERTEX PX-1000
Key Features
  • 1000W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX 12V
  • 3 x PCIe Connectors
$26999
Reg. $279.99
Save $10.00
Offer ends May 31 at 8:15 PM EDT
In Stock

Thermaltake Toughpower GF3 1650W 80 PLUS Gold Modular ATX Power Supply

B&H # THTPGF31650G MFR # PS-TPD-1650FNFAGU-4
Key Features
  • 1650W Single +12V Rail
  • 135mm Fluid Dynamic Bearing Fan
  • 9 x PCIe Connectors
  • 16 x SATA Connectors
$28999
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
$6999
In Stock

Gigabyte UD1000GM PG5 Rev. 2.0 1000W 80 PLUS Gold Modular Power Supply (Black)

B&H # GIGPUD10GP52 MFR # GP-UD1000GM PG5 REV2.0
Key Features
  • 1000W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V 3.0
  • 5 x PCIe Connectors
$11499
Reg. $139.99
Save $25.00
Offer ends May 31 at 8:15 PM EDT
In Stock

Corsair RM850x SHIFT 80 PLUS Gold Modular Power Supply

B&H # CORM850XPS MFR # CP-9020252-NA
Key Features
  • 850W Total Wattage
  • ATX 12V Version 3.0
  • 12VHPWR Cable
  • 4 x PCIe Connectors
$15999
In Stock

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

SeaSonic Electronics Vertex PX-1200 1200W 80 Plus Platinum Modular Power Supply

B&H # SEVRTXPX1200 MFR # VERTEX PX-1200
Key Features
  • 1200W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX 12V
  • 3 x PCIe Connectors
$29999
Reg. $329.99
Save $30.00
Offer ends May 31 at 8:15 PM EDT
In Stock

ASUS ROG THOR 1600W Titanium Fully Modular Power Supply

B&H # ASRTHOR1600T MFR # ROG-THOR-1600T-GAMING
Key Features
  • Single 1600W +12V Rail
  • Sleeved Modular Cable Design
  • Dedicated PCIe 5.0 600W 16-Pin Connector
  • 80 PLUS Titanium Certification
$69999
In Stock

Thermaltake Smart 700W 80 PLUS Power Supply

B&H # THPSSPD700NP MFR # PS-SPD-0700NPCWUS-W
Key Features
  • 700W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 2.3
  • 2 x PCIe Connectors
$5495
Special Order
Expected availability: 2-4 Weeks

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.