Computer Power Supplies

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Corsair RM850x 850W 80 PLUS Gold Modular Power Supply

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
$14999
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

MSI MPG A1000G PCIE5 1000W 80 PLUS Gold Modular Power Supply

B&H # MSMPGA1000GP MFR # MPGA1000GPCIE5
Key Features
  • 1000W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 1 x 16-Pin Connector
$15999
Reg. $179.99
Save $20.00
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
Reg. $44.99
Save $4.00
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
$3994
In Stock

MSI 1000W MEG Ai1000 PCIE5 ATX 3.0 Power Supply

B&H # MSMEGAI1000P MFR # MEG AI1000P PCIE5
Key Features
  • 1000W Peak Performance
  • Dedicated PCIe 5.0 Connector
  • Fully Modular Design
  • 80 PLUS Platinum Efficiency Rating
$25100
In Stock

ASUS 1000W TUF Gaming Gold Modular ATX Power Supply

B&H # ASTUFGM1000G MFR # TUF-GAMING-1000G
Key Features
  • 1000W Single +12V Rail
  • 135mm Cooling Fan
  • ATX12V Version 3.0 Intel Form Factor
  • 600W 16-Pin PCIe Connector
$15691
Reg. $176.91
Save $20.00
In Stock

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
$15773
In Stock

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 SF750 750W 80 PLUS Platinum Modular Power Supply

B&H # COPSSF750 MFR # CP-9020186-NA
Key Features
  • 750W Single +12V Rail
  • 92mm Cooling Fan
  • Intel ATX12V Version 2.4
  • 4 x PCIe Connectors
$18499
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
$32499
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. $94.99
Save $5.00
Offer ends Apr 16 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
$11099
In Stock

MSI MPG A850G PCIE5 850W 80 PLUS Gold Modular Power Supply

B&H # MSMPGA850GP MFR # MPG A850G PCIE 5
Key Features
  • 850W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 1 x 16-Pin Connector
$12999
Reg. $149.99
Save $20.00
In Stock

Lian Li 850W SP850 80+ Gold SFX Modular Power Supply (Black)

B&H # LISP850BLACK MFR # SP850 BLACK
Key Features
  • SFX Form Factor
  • 850W Total Power
  • 80+ Gold Certified
  • Fully Modular Braided Cable Design
$13476
In Stock
Other Buying Options

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
$16999
Reg. $212.49
Save $42.50
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
$24499
In Stock
Other Buying Options

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 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
$18999
In Stock

be quiet! Straight Power 11 550W 80 Plus Gold Modular Power Supply

B&H # BEBN617 MFR # BN617
Key Features
  • 135mm Cooling Fan
  • Four 12V Rails
  • 20+4-pin ATX Connector
  • 2 x 6+2-pin PCIe Connectors
$10990
In Stock

Corsair 850W SF-L 80 Plus Gold Modular Power Supply

B&H # COSF850LPS MFR # CP-9020245-NA
Key Features
  • 850W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 12VHPWR Connector
$14999
In Stock
Other Buying Options

Cooler Master V850 SFX Gold 850W 80 PLUS Gold Modular SFX Power Supply (White)

B&H # COV850SFXGW MFR # MPY-8501-SFHAGV-WU
Key Features
  • 850W Single +12V Rail
  • 92mm Cooling Fan
  • SFX 12V Version 3.42
  • 6 x PCIe 6+2-Pin Connectors
$14999
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
$17599
In Stock

Corsair RM1200x SHIFT 80 PLUS Gold Modular Power Supply

B&H # CORM1200XPS MFR # CP-9020254-NA
Key Features
  • 1200W Total Wattage
  • ATX 12V Version 3.0
  • 12VHPWR Cable
  • 8 x PCIe Connectors
$20999
Reg. $229.99
Save $20.00
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
$32999
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
Reg. $89.99
Save $10.00
Offer ends Apr 14 at 11:59 PM EDT
In Stock

SeaSonic Electronics Vertex GX-1000W 80-PLUS Gold PCIE5 Modular Power Supply

B&H # SEVRTXGX1000 MFR # VERTEX GX-1000
Key Features
  • 1000W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V
  • 1 x PCIe 5.0 Connector
$20999
In Stock
Other Buying Options

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
$23499
Reg. $259.99
Save $25.00
Offer ends Apr 14 at 11:59 PM EDT
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.