Computer Power Supplies

1-30 of 154
Filter by:Sort by:
View:
SeaSonic Electronics Vertex GX-1000W 80-PLUS Gold PCIE5 Modular Power Supply

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
$24999
Temporarily Out of Stock
Expected availability: 2-4 weeks
SeaSonic Electronics FOCUS 850W 80 PLUS Gold ATX 12V Power Supply

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
$15999
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
$17499
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

ASUS ROG LOKI SFX-L Platinum 1000W Modular Power Supply

B&H # ASRL1000PSLG MFR # ROG-LOKI-1000P-SFX-L-GAMING
Key Features
  • SFX-L Form Factor
  • ATX 3.0 Compatible
  • 1000W Total Output
  • Modular Cable Design
$24999
Temporarily Out of Stock
Expected availability: 2-4 weeks

SeaSonic Electronics 1300W 80 Plus Platinum Modular ATX Power Supply

B&H # SESSR1300PD MFR # SSR-1300PD
Key Features
  • 1296W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX 12V
  • 12 x PCIe Connectors
$33000
In Stock

be quiet! 1000W PURE POWER 12 M Power Supply

B&H # BEPP12MG1000 MFR # BN506
Key Features
  • Up to 1000W of Power
  • 80 Plus Gold Efficiency
  • 120mm Rifle Bearing Fan
  • Dedicated 12VHPWR Cable
$16490
Temporarily Out of Stock
Expected availability: 2-4 weeks

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
$15999
In Stock

Corsair 1200W HX Series HX1200 80 PLUS Platinum Modular Power Supply

B&H # COCP9020140N MFR # CP-9020140-NA
Key Features
  • 1200W of Power
  • 80 PLUS Platinum Efficiency Rating
  • 1 x Mainboard 20+4-Pin Connector
  • 2 x 4+4-Pin Connectors
$27999
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
$9999
In Stock

SeaSonic Electronics FOCUS 750W 80 PLUS Gold ATX 12V Power Supply

B&H # SESSR750FX MFR # SSR-750FX
Key Features
  • 750W Single +12V Rail
  • Intel ATX 12V Form Factor
  • 4 x PCI-E Connectors
  • 8 x SATA Connectors
$13999
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
$18995
In Stock

Corsair SF Series 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
$17214
In Stock

SeaSonic Electronics Prime Ultra Titanium Series 850W 80 Plus Titanium Modular ATX Power Supply

B&H # SESSR850TR MFR # SSR-850TR
Key Features
  • 840W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V
  • 6 x PCI-E Connectors
$24999
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
$19999
In Stock
Other Buying Options

SeaSonic Electronics Prime Ultra Titanium Series 750W 80 Plus Titanium Modular ATX Power Supply

B&H # SESSR750TR MFR # SSR-750TR
Key Features
  • 744W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V
  • 4 x PCI-E Connectors
$20999
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
In Stock

Cooler Master MasterWatt 650 650W 80 Plus Bronze Semi-Modular Power Supply

B&H # COMPX6501AMA MFR # MPX-6501-AMAAB-US
Key Features
  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX 12V Version 2.4
  • 4 x PCI-e Connectors
$8699
In Stock

be quiet! Straight Power 11 750W 80 Plus Gold Modular Power Supply

B&H # BEBN619 MFR # BN619
Key Features
  • 750W Four +12V Rails
  • 135mm Cooling Fan
  • ATX 12V 2.4 / EPS 12V 2.92
  • 4 x PCIe Connectors
$13599
In Stock

MSI MPG A750GF 80 PLUS Gold Modular Power Supply

B&H # MSMPGA750GF MFR # MPG A750GF
Key Features
  • One 750W +12V Rail
  • 140mm Cooling Fan
  • Intel ATX12V
  • 6 x PCIe Connectors
$12999
In Stock

SeaSonic Electronics PRIME 1300W 80 Plus Gold ATX Modular Power Supply

B&H # SESSR1300GD MFR # SSR-1300GD
Key Features
  • 1300W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX 12V Form Factor
  • 12 x PCIe Connectors
$27999
In Stock

be quiet! 850W PURE POWER 12 M Power Supply

B&H # BEPP12MG850 MFR # BN505
Key Features
  • Up to 850W of Power
  • 80 Plus Gold Efficiency
  • 120mm Rifle Bearing Fan
  • Dedicated 12VHPWR Cable
$13490
Temporarily Out of Stock
Expected availability: 2-4 weeks

Lian Li 750W SP750 SFX 80 Plus Gold Fully Modular Power Supply (White)

B&H # LIPSLSP750W MFR # PS-LSP750W
Key Features
  • SFX Form Factor
  • 744W Single +12V Rail
  • 92mm Cooling Fan
  • Full Modular Cable Design
$13999
In Stock

be quiet! Straight Power 11 1200W 80 Plus Platinum Modular Power Supply

B&H # BESP11P1200P MFR # BN645
Key Features
  • 1200W Four +12V Rails
  • 135mm Cooling Fan
  • Sleeved Modular Cables
  • ATX 12V v2.51 / EPS 12V v2.92
$24990
In Stock

SeaSonic Electronics PRIME 1600W ATX Power Supply

B&H # SEPPX1600 MFR # PRIME PX-1600
Key Features
  • Full Modular Design
  • 1600W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX 12V Form Factor
$42999
Temporarily Out of Stock
Expected availability: 2-4 weeks

MSI MPG A650GF 80 PLUS Gold Modular Power Supply

B&H # MSMPGA650GF MFR # MPG A650GF
Key Features
  • One 650W +12V Rail
  • 140mm Cooling Fan
  • Intel ATX12V
  • 4 x PCIe Connectors
$10699
In Stock

be quiet! Straight Power 11 650W 80 Plus Platinum Modular Power Supply

B&H # BESP11P650PS MFR # BN641
Key Features
  • 649.2W Four +12V Rails
  • 135mm Cooling Fan
  • Sleeved Modular Cables
  • ATX 12V v2.51 / EPS 12V v2.92
$13490
In Stock

be quiet! Straight Power 11 850W 80 Plus Platinum Modular Power Supply

B&H # BESP11P850PS MFR # BN643
Key Features
  • 849.6W Four +12V Rails
  • 135mm Cooling Fan
  • Sleeved Modular Cables
  • ATX 12V v2.51 / EPS 12V v2.92
$17490
Temporarily Out of Stock
Expected availability: 7-14 business days
Other Buying Options

Gigabyte AORUS P1200W 1200W 80 PLUS Platinum Modular ATX Power Supply

B&H # GIGPAP1200PM MFR # GP-AP1200PM
Key Features
  • 1200W Single +12V Rail
  • 140mm Cooling Fan
  • Intel ATX12V Version 2.31
  • 10 x PCIe Connectors
$33999
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
$15999
In Stock

YOUR RECENTLY VIEWED ITEMS

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.