Power Supplies

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

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
$19999
6 Mos. Promo Financing*
In Stock
NZXT C850 850W 80 PLUS Gold Modular Power Supply

NZXT C850 850W 80 PLUS Gold Modular Power Supply

B&H # NZNPC850MUS MFR # NP-C850M-US

Key Features

  • 850W Single +12V Rail
  • 120mm Cooling Fan
  • ATX 12V v2.4 / EPS 12V v2.92
  • 6 x PCIe Connectors
$13900
In Stock

Cooler Master MWE Gold 750 750W 80 Plus Gold Modular Power Supply

B&H # COMPY7501AFU MFR # MPY-7501-AFAAG-US

Key Features

  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • ATX12V Version 2.31
  • 4 x 8-Pin (6+2) PCIe Connectors
$11999
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
$6499
In Stock

Thermaltake Toughpower GF1 850W 80 PLUS Gold Modular ATX Power Supply

B&H # THPSTPD850G MFR # PS-TPD-0850FNFAGU-1

Key Features

  • 850W Single +12V Rail
  • 140mm Cooling Fan
  • 6 x PCIe Connectors
  • 12 x SATA Connectors
$13999
In Stock

be quiet! Pure Power 11 500W CM Power Supply

B&H # BEBN628 MFR # BN628

Key Features

  • 500W Dual +12V Rails
  • Modular Design
  • Intel ATX 12V Version 2.4
  • 2 x PCIe Connectors
$7990
In Stock

SeaSonic Electronics FOCUS SGX Series 650W 80 Plus Gold Modular SFX-L Power Supply

B&H # SESSR650SGX MFR # SSR-650SGX

Key Features

  • 650 Single +12V Rail
  • 120mm Cooling Fan
  • Intel SFX12V/ATX12V
  • 4 x 8/6-Pin PCIe Connectors
$12900
In Stock

SilverStone Strider Series 1000W 80 Plus Platinum Modular Power Supply

B&H # SIST1000PT MFR # ST1000-PT

Key Features

  • 1000W Single +12V Rail
  • 139mm Silent Cooling Fan
  • Intel ATX12V Version 2.4
  • 6 x 8/6-Pin PCIe Connectors
$23699
6 Mos. Promo Financing*
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
$13865
In Stock

SeaSonic Electronics FOCUS PX Series 850W 80 Plus Platinum Modular ATX Power Supply

B&H # SEFOCUSPX850 MFR # FOCUS PX-850

Key Features

  • 850W Single +12V Rail
  • Intel ATX12V
  • 120mm Cooling Fan
  • 6 x PCIe 8/6-Pin Connectors
$16999
6 Mos. Promo Financing*
In Stock

SeaSonic Electronics FOCUS PX Series 750W 80 Plus Platinum Modular ATX Power Supply

B&H # SEFOCUSPX750 MFR # FOCUS PX-750

Key Features

  • 750W Single +12V Rail
  • Intel ATX12V
  • 120mm Cooling Fan
  • 4 x PCIe 8/6-Pin Connectors
$14899
In Stock

Corsair RM650X 80 PLUS Gold Fully Modular ATX Power Supply

B&H # CORM650X80PG MFR # CP-9020178-NA

Key Features

  • 650W Single +12 Rail
  • 140mm Cooling Fan
  • EPS/ATX12V Form Factor
  • 4 x PCIe 8-Pin Connectors
$11963
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
$4799
In Stock

SeaSonic Electronics FOCUS GX Series 650W 80 Plus Gold Modular ATX Power Supply

B&H # SEFOCUSGX650 MFR # FOCUS GX-650

Key Features

  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 4 x PCIe 8/6-Pin Connectors
$11999
In Stock

Corsair CX Series CX550M 550W 80 PLUS Bronze Semi-Modular ATX Power Supply

B&H # COCX550M MFR # CP-9020102-NA

Key Features

  • 550W Single +12V Rail
  • 120mm Cooling Fan
  • ATX12V v2.4 & EPS 2.92 Form Factor
  • 2 x PCI-E Connectors
$6999
In Stock

Gigabyte GP-P450B 450W 80 PLUS Bronze Power Supply

B&H # GIGPP450B MFR # GP-P450B

Key Features

  • 450W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX 12V v2.31 Form Factor
  • 2 x PCIe Connectors
$3999
In Stock

Thermaltake Toughpower 750W 80 PLUS Gold Modular Power Supply (Black)

B&H # THPSTPD0750M MFR # PS-TPD-0750MPCGUS-1

Key Features

  • 750W Maximum Output Capacity
  • 80 PLUS Gold Certified and Haswell Ready
  • 12 x 5-Pin SATA Connectors
  • 4 x PCIe (6 + 2-Pin) Connectors
$10899
In Stock

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

B&H # COCX650M MFR # CP-9020103-NA

Key Features

  • 550W Single +12V Rail
  • 120mm Cooling Fan
  • ATX12V v2.4 & EPS 2.92 Form Factor
  • 2 x PCI-E Connectors
$8801
In Stock

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

B&H # BEBN620 MFR # BN620

Key Features

  • 849.6W Four +12V Rails
  • 135mm Cooling Fan
  • ATX 12V v2.4 / EPS 12V v2.92
  • 4 x PCIe Connectors
$16990
6 Mos. Promo Financing*
In Stock

Fractal Design Ion SFX 650W 80 PLUS Gold Modular Power Supply

B&H # FRPSISF650GK MFR # FD-PSU-ION-SFX-650G-BK

Key Features

  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • Intel SFX12V
  • 4 x PCIe Connectors
$12199
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
$13990
In Stock
Other Buying Options

SeaSonic Electronics FOCUS GX Series 1000W 80 Plus Gold Modular ATX Power Supply

B&H # SEFOCSGX1000 MFR # FOCUS GX-1000

Key Features

  • 1000W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 6 x PCIe 8/6-Pin Connectors
$17999
6 Mos. Promo Financing*
In Stock

Cooler Master MasterWatt 750 750W 80 Plus Bronze Semi-Modular Power Supply

B&H # COMPX7501AMA MFR # MPX-7501-AMAAB-US

Key Features

  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX 12V Version 2.4
  • 4 x PCI-e Connectors
$8499
In Stock

Gigabyte GP-P750GM 750W 80 PLUS Gold Modular Power Supply

B&H # GIGPP750GM MFR # GP-P750GM

Key Features

  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX 12V v2.31 Form Factor
  • 4 x PCIe Connectors
$11999
In Stock

SeaSonic Electronics FOCUS GM 850W 80 Plus Gold ATX Power Supply

B&H # SEFOCUSGM850 MFR # FOCUS GM-850

Key Features

  • 850W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 6 x PCIe Connectors
$12699
In Stock

SeaSonic Electronics S12III Series 550W 80 Plus Bronze ATX Power Supply

B&H # SESSR550GB3 MFR # SSR-550GB3

Key Features

  • 550W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 2 x 8/6-Pin PCIe Connectors
$5599
In Stock

MSI MPG A850GF 80 Plus Gold Modular Power Supply

B&H # MSMPGA850GF MFR # MPG A850GF

Key Features

  • One 850W +12V Rail
  • 140mm Cooling Fan
  • Intel ATX12V
  • 6 x PCIe Connectors
$13999
In Stock

SilverStone SFX Series 700W 80 Plus Platinum Modular SFX-L Power Supply

B&H # SISX700LPT MFR # SX700-LPT

Key Features

  • 700W Single +12V Rail
  • 120mm Cooling Fan
  • ATX12V Version 2.4
  • 4 x PCI-E Connectors
$18699
6 Mos. Promo Financing*
In Stock

Cooler Master Elite V3 400W Power Supply

B&H # COW401ACAN1U MFR # MPW-4001-ACAAN1-US

Key Features

  • 400W Single +12V Rail
  • Intel ATX 12V Form Factor
  • 75% Efficiency
  • Non-Modular Design with Sleeved Cables
$4499
In Stock

SeaSonic Electronics FOCUS GX Series 850W 80 Plus Gold Modular ATX Power Supply

B&H # SEFOCUSGX850 MFR # FOCUS GX-850

Key Features

  • 850W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 6 x PCIe 8/6-Pin Connectors
$14999
6 Mos. Promo Financing*
In Stock

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Choosing 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.

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