Power Supplies

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SeaSonic Electronics Prime Ultra Titanium Series 1000W 80 Plus Titanium Modular ATX Power Supply

SeaSonic Electronics Prime Ultra Titanium Series 1000W 80 Plus Titanium Modular ATX Power Supply

B&H # SESSR1000TR MFR # SSR-1000TR

Key Features

  • 996W Single +12V Rail
  • 135mm Cooling Fan
  • Intel ATX12V
  • 8 x PCI-E Connectors
$29999
6 Mos. Promo Financing*
In Stock
SeaSonic Electronics PRIME 1300W 80 Plus Gold ATX Modular Power Supply

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
$24499
6 Mos. Promo Financing*
In Stock

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
$14999
6 Mos. Promo Financing*
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
$12900
In Stock

ASUS ROG Strix 1000W 80 PLUS Gold Power Supply

B&H # ASRSTRX1000G MFR # ROG-STRIX-1000G

Key Features

  • 80 Plus Gold Power Rating
  • 1000W Single +12V Rail
  • 1 x 24/20-Pin Mainboard Connector
  • 2 x 4+4-Pin CPU Connectors
$23534
6 Mos. Promo Financing*
In Stock

SeaSonic Electronics FOCUS GX Series 750W 80 Plus Gold Modular ATX Power Supply

B&H # SEFOCUSGX750 MFR # FOCUS GX-750

Key Features

  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 4 x PCIe 8/6-Pin Connectors
$11999
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
$15999
6 Mos. Promo Financing*
In Stock

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

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
$23999
6 Mos. Promo Financing*
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
$12848
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
$10999
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
$14899
In Stock

be quiet! Straight Power 11 1000W 80 Plus Platinum Modular Power Supply

B&H # BESP11P1100P MFR # BN644

Key Features

  • 999.6W Four +12V Rails
  • 135mm Cooling Fan
  • Sleeved Modular Cables
  • ATX 12V v2.51 / EPS 12V v2.92
$20990
6 Mos. Promo Financing*
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
$9699
In Stock

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
$8999
Reg. $109.99
Cyber Week Savings $20.00
In Stock

SeaSonic Electronics Focus GX 1000-Watt 80+ Gold Power Supply

B&H # SESR1000FXV2 MFR # SSR-1000FX

Key Features

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

ASUS Republic of Gamers Thor 850W 80 Plus Platinum Modular Power Supply

B&H # ASROGTHR850P MFR # ROG-THOR-850P

Key Features

  • 850W +12V Rail
  • 135mm Wing-Blade Cooling Fan
  • Intel ATX12V
  • 4 x 6+2-Pin PCIe Connectors
$22899
6 Mos. Promo Financing*
In Stock

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
$29999
6 Mos. Promo Financing*
In Stock

Cooler Master MWE 450 WHITE - V2 450W 80 Plus Standard ATX Power Supply

B&H # COMWE450WV2 MFR # MPE-4501-ACAAW-US

Key Features

  • 450W Single +12V Rail
  • 120mm Cooling Fan
  • 2 x 6+2-Pin PCIe Connectors
  • 6 x SATA Connectors
$4200
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
$12999
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
6 Mos. Promo Financing*
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
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
$5999
Reg. $84.99
Cyber Week Savings $25.00
Offer ends Dec 04 at 11:59 PM EST
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

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
$10999
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
$11441
In Stock

be quiet! Dark Power 12 1000W 80 PLUS Titanium Modular Power Supply

B&H # BEDP121000 MFR # BN658

Key Features

  • 1000W +12V Rails
  • ATX12V 2.51
  • Fully Modular Cables
  • 8 x 6+2 PCIe Pin Connectors
$27990
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
$3899
Reg. $48.99
Cyber Week Savings $10.00
Offer ends Dec 04 at 11:59 PM EST
In Stock

SeaSonic Electronics S12III Series 500W 80 Plus Bronze ATX Power Supply

B&H # SESSR500GB3 MFR # SSR-500GB3

Key Features

  • 500W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 2 x 8/6-Pin PCIe Connectors
$5900
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
$7999
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.

 

 

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