Computer Power Supplies

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SeaSonic Electronics 1300W 80 Plus Platinum Modular ATX Power Supply

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

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

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
$6999
In Stock

Gigabyte GP-P650B 650W 80 PLUS Bronze Power Supply

B&H # GIGPP650B MFR # GP-P650B

Key Features

  • 650W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX 12V v2.31 Form Factor
  • 4 x PCIe Connectors
$4499
Reg. $74.99
Save $30.00
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
$13900
Special Order
Expected availability: 3-7 business days

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
$15799
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
$7999
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
In Stock

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
$11999
Reg. $129.99
Save $10.00
Offer ends May 29 at 11:59 PM EDT
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
$9999
Reg. $129.99
Save $30.00
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
$20999
In Stock

NZXT C750 750W 80 PLUS Gold Modular Power Supply

B&H # NZNPC750MUS MFR # NP-C750M-US

Key Features

  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • ATX 12V v2.4 / EPS 12V v2.92
  • 4 x PCIe Connectors
$10999
Reg. $129.99
Save $20.00
Offer ends May 29 at 11:59 PM EDT
Temporarily Out of Stock
Expected availability: 2-4 weeks

SeaSonic Electronics Focus Gold Series 750W 80 Plus Gold Semi-Modular ATX Power Supply

B&H # SESSR750FM MFR # SSR-750FM

Key Features

  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 4 x PCI-E 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
$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
$24394
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 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
$22110
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
$24599
In Stock

be quiet! Dark Power Pro 12 1500W 80 PLUS Titanium Modular Power Supply

B&H # BEBN647 MFR # BN647

Key Features

  • 1500W via Six +12V Rails
  • 135mm Silent Wings Cooling Fan
  • Intel ATX12V Version 2.51
  • 10 x PCIe Connectors
$44900
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

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
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
$7642
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

be quiet! Pure Power 11 FM 1000W Power Supply

B&H # BEPP11FM1000 MFR # BN676

Key Features

  • 1000W Dual +12 Rails
  • Fully Modular Design
  • Intel ATX 12V Version 2.5
  • 4 x PCIe Connectors
$15990
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
In Stock

SeaSonic Electronics FOCUS Plus 550W 80-PLUS Platinum Modular Power Supply

B&H # SESSR550PX MFR # SSR-550PX

Key Features

  • 550W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V Version 2.3
  • 2 x PCI-E Connectors
$12999
In Stock

Cooler Master MasterWatt 550 550W 80 Plus Bronze Semi-Modular Power Supply

B&H # COMPX5501AMA MFR # MPX-5501-AMAAB-US

Key Features

  • 550W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX 12V Version 2.4
  • 2 x PCI-e Connectors
$6999
In Stock

SeaSonic Electronics FOCUS GM 750W 80 Plus Gold ATX Power Supply

B&H # SEFOCUSGM750 MFR # FOCUS GM-750

Key Features

  • 750W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 4 x PCIe Connectors
$11499
In Stock

SeaSonic Electronics FOCUS SGX Series 500W 80 Plus Gold Modular SFX-L Power Supply

B&H # SEFOCSSGX500 MFR # FOCUS SGX-500

Key Features

  • 500 Single +12V Rail
  • 120mm Cooling Fan
  • Intel SFX12V/ATX12V
  • 2 x 8/6-Pin PCIe Connectors
$11900
In Stock

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

B&H # LISP750 MFR # SP750

Key Features

  • SFX Form Factor
  • 744W Single +12V Rail
  • 92mm Cooling Fan
  • Full Modular Cable Design
$12900
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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