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Corsair HX620W Power Supply

A good combination of modular design and high efficiency.

September 2, 2008



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The maker states the following specifications:



From specifications point of view, PSU marking is adequate for a 620W PSU.


Model name Max. current, A Max. power, W
3.3V 5V 12V1 12V2 12V3 12V4 3.3&5V 12V Total
ATX12V ver. 2.3 180W 13 14 10 - - - 80 120 175
ATX12V ver. 2.3 220W 13 14 14 - - - 80 168 215
ATX12V ver. 2.3 270W 19 15 17 - - - 97 204 265
ATX12V ver. 2.3 300W 21 15 11 8 - - 103 216 295
ATX12V ver. 2.3 350W 21 15 11 14 - - 103 264 345
ATX12V ver. 2.3 400W 24 15 17 14 - - 120 300 395
ATX12V ver. 2.3 450W 24 15 17 16 - - 120 360 445
Corsair HX620W 24 30 18 18 18 - 170 600 620

The length of PSU cables is as follows:

  • ATX power -- 55 cm;
  • CPU socket, 8-pin SSI -- 55 cm;
  • ATX12V -- 55 cm;
  • 2 x PCI-E 1.0/2.0 VGA Power Connector -- 60 cm;
  • SATA Power Connector -- 50 cm, 15 cm to the second connector;
  • 2 x SATA Power Connector -- 50 cm, 15 cm to the second connector, 15 cm to the third connector;
  • 2 x Peripheral Connector (molex) -- 35 cm, 15 cm to the second connector;
  • 2 x Peripheral Connector (molex) -- 35 cm, 15 cm to the second connector, 15 cm to the third connector;
  • Fan only 12V -- 15 cm;
  • 4-pin Floppy Drive Connector -- 15 cm.

Note that the PSU has only 5 peripheral outputs, so it's be impossible to use all available connectors.


Connector Amount available via adapters
24-pin Main Power Connector 1 demountable
4-pin 12V Power Connector 1
8-pin SSI Processor Connector 1
8-pin PCI-E 2.0 VGA Power Connector 2 demountable
4-pin Peripheral Connector 9
15-pin Serial ATA Connector 9
4-pin Floppy Drive Connector (2)

All non-detachable cables are covered by black nylon mesh. The detachable cables are ribbon. Molex peripheral connectors are self-releasing (ergonomic).



The amount of connectors and cable length is enough for a large number of PC parts. For a gaming rig, 1 dual-GPU or 2 single-GPU cards of any wattage can be powered.










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Article navigation:

Page 1: Introduction, design

Page 2: Specifications, interior

Page 3: Test results, conclusions



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