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Computer Power Supplies

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Corsair SF850 80 PLUS Platinum Fully Modular 850W SFX Power Supply (Black)

Corsair SF850 80 PLUS Platinum Fully Modular 850W SFX Power Supply (Black)

B&H # COSF850P MFR # CP-9020256-NA
Key Features
  • 850W Single +12V Rail
  • 92mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 1 x 16-Pin 12VHPWR Connector
$19999
In Stock
Free Expedited Shipping
Corsair RM1000x 1000W 80 Plus Gold Fully Modular ATX Power Supply (Black)

Corsair RM1000x 1000W 80 Plus Gold Fully Modular ATX Power Supply (Black)

B&H # CORM1000XPSP MFR # CP-9020271-NA
Key Features
  • 1000W Single +12V Rail
  • Internal Cooling Fan
  • Intel ATX12V Version 3.1
  • 4 x PCIe 6+2-Pin Connectors
$18999
In Stock
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Corsair SF750 80 PLUS Platinum Fully Modular 750W SFX Power Supply (Black)

B&H # COSF750P MFR # CP-9020284-NA
Key Features
  • 750W Single +12V Rail
  • 92mm Cooling Fan
  • Intel ATX12V Version 3.0
  • 1 x 16-Pin 12VHPWR Connector
$17999
In Stock
Free Expedited Shipping

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
$20990
Reg. $229.90
Save $20.00
In Stock
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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
$9999
In Stock
Free Expedited Shipping

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
$17490
Reg. $199.90
Save $25.00
In Stock
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Corsair RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply (Black)

B&H # CORM850XPSP MFR # CP-9020270-NA
Key Features
  • 850W Single +12V Rail
  • Internal Cooling Fan
  • Intel ATX12V Version 3.1
  • 3 x PCIe 6+2-Pin Connectors
$13499
In Stock
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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
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SeaSonic Electronics Vertex GX-850W 80-PLUS Gold PCIE5 Modular Power Supply

B&H # SEVRTXGX850 MFR # VERTEX GX-850
Key Features
  • 850W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V
  • 1 x PCIe 5.0 Connector
$14999
In Stock
Free Expedited Shipping

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
$3999
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
$9125
In Stock
Free Standard Shipping

Corsair RM750x 750W 80 Plus Gold Fully Modular ATX Power Supply (Black)

B&H # CORM750XPSP MFR # CP-9020285-NA
Key Features
  • 750W Single +12V Rail
  • Internal Cooling Fan
  • Intel ATX12V Version 3.1
  • 2 x PCIe 6+2-Pin Connectors
$11999
In Stock
Free Expedited Shipping

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
$8995
In Stock
Free Expedited Shipping

SeaSonic Electronics FOCUS GX ATX 3.1 850W 80 PLUS Gold Modular Power Supply

B&H # SEFCSGX850A3 MFR # FOCUS GX-850 (ATX3)
Key Features
  • 850W Single +3.3V Rail
  • 135mm Fluid Dynamic Bearing Cooling Fan
  • Intel ATX 3.0
  • 5 x PCIe/CPU Connectors
$14999
In Stock
Free Expedited Shipping

SeaSonic Electronics FOCUS GX ATX 3.1 750W 80 PLUS Gold Modular Power Supply

B&H # SEFCSGX750A3 MFR # FOCUS GX-750 (ATX3)
Key Features
  • 750W Single +3.3V Rail
  • 135mm Fluid Dynamic Bearing Cooling Fan
  • Intel ATX 3.0
  • 5 x PCIe/CPU Connectors
$12990
In Stock
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Lian Li 850W SP850 80+ Gold SFX Modular Power Supply (White)

B&H # LISP850WHITE MFR # SP850 WHITE
Key Features
  • SFX Form Factor
  • 850W Total Power
  • 80+ Gold Certified
  • Fully Modular Braided Cable Design
$13900
In Stock
Free Expedited Shipping

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
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Corsair RM1000x SHIFT 80 PLUS Gold Modular Power Supply

B&H # CORM1000XPS MFR # CP-9020253-NA
Key Features
  • 1000W Total Wattage
  • ATX 12V Version 3.0
  • 12VHPWR Cable
  • 7 x PCIe Connectors
$16999
Reg. $209.99
Save $40.00
Offer ends at
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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
$16999
Reg. $199.99
Save $30.00
In Stock
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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
Special Order
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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
$11599
Temporarily Out of Stock
Expected availability: 7-14 Business Days
Free Expedited Shipping

Corsair HX1200i 1200W 80 Plus Platinum Modular ATX Power Supply (Black)

B&H # COHX1200IPS MFR # CP-9020281-NA
Key Features
  • 1200W Single +12V Rail
  • Internal 140mm Cooling Fan
  • Intel ATX12V Version 3.1
  • 12VHPWR 16-Pin Connector
$31999
In Stock
Free Expedited Shipping

Corsair RM1200x Shift Cybenetics 1200W 80 PLUS Gold Modular Power Supply

B&H # CORM1200XPSW MFR # CP-9020276-NA
Key Features
  • 1200W Single +12V Rail
  • Fully Modular Design
  • 140mm Cooling Fan
  • ATX12V Version 3.0 & EPS12V Version 2.92
$20999
In Stock
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Gigabyte AORUS ELITE 1000W 80 PLUS Platinum Modular ATX Power Supply (ICE)

B&H # GIAE1000PP5I MFR # GP-AE1000PM PG5 ICE
Key Features
  • 1000W Single +12V Rail
  • 120mm Fluid Dynamic Bearing Fan
  • Intel ATX 3.1 and PCIe 5.0 Ready
  • AORUS Magnetic Plate
$20999
In Stock
Free Expedited Shipping

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
$34099
In Stock
Free Expedited Shipping

Corsair HX1500i 1500W 80 Plus Platinum Modular ATX Power Supply (Black)

B&H # COHX1500IPS MFR # CP-9020261-NA
Key Features
  • 1500W Single +12V Rail
  • Internal 140mm Cooling Fan
  • Intel ATX12V Version 3.1
  • 12VHPWR 16-Pin Connector
$35999
In Stock
Free Expedited Shipping

Corsair CX Series CX550 550W 80 PLUS Bronze ATX Power Supply

B&H # COCX550PS MFR # CP-9020277-NA
Key Features
  • 550W Single +12V Rail
  • 120mm Cooling Fan
  • ATX12V Version 2.31
  • 2 x PCIe Connectors
$5999
In Stock
Free Expedited Shipping

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
$11999
Reg. $144.99
Save $25.00
In Stock
Free Expedited Shipping

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.