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Corsair > 
Item#: N82E16817139002

CORSAIR HX Series CMPSU-620HX 620W ATX12V v2.2 and EPS12V 2.91 SLI CrossFire 80 PLUS Certified Modular Active PFC Compatible with Core i7 Power Supply

  • ATX12V v2.2 and EPS12V 2.91
  • 100 - 240 V
  • 80 PLUS Certified
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An important tip from one of our users: don't just check total power output, find out what you need in the way of current on each power rail. If you need 20 A on your +12V rails and the supply only has 15A, it doesn't matter how many watts the supply puts out: don't buy it. Make certain that you have ENOUGH rails, too: sometimes, you need more than just two +12V rails for your setup.

Replacing an existing power supply is easier: just get a replacement that meets or exceeds the specifications of the old one. (You can usually find those printed on the side of the supply.)

That said, here's a power supply that is compatible with most ATX format motherboards, puts out 620 watts of power (see specifications for exact distribution). Could this be your next power supply?

  • newegg ATX12V v2.2 and EPS12V Compatible Compatible with the ATX12V v2.2 and EPS12V standards, the CORSAIR CMPSU-620HX provides maximum power stability to drive the latest Intel and AMD processors as well as other components for desktop and entry-level server computer systems.
  • newegg 620W Maximum Power The CORSAIR CMPSU-620HX provides a maximum power of 620W to deliver safe, reliable output for high-end computer systems.
  • newegg Highly Efficient Delivering up to 80% efficiency, the CORSAIR CMPSU-620HX power supply saves energy and may even reduce your electric bill!
  • newegg Efficient Cooling A 120mm double ball-bearing fan delivers highly efficient cooling for the power supply and the whole system. The thermally-controlled fan ensures whisper-quiet operation.
  • newegg Modular Cabling Support The CORSAIR CMPSU-620HX features modular cabling support that allows use of only the cables you need resulting in improved internal airflow and reduced system clutter.
  • newegg NVIDIA SLI Certified The CORSAIR CMPSU-620HX power supply has gone through a series of rigorous NVIDIA SLI certification tests for maximum system stability when building NVIDIA SLI PCs.

Learn more about the Corsair CMPSU-620HX


HX Series


ATX12V v2.2 and EPS12V 2.91
Maximum Power
1 x 120mm ball-bearing fan
Main Connector
+12V Rails
SATA Power Connector
SLI Certified
CrossFire Ready
80 PLUS Certified
Over Voltage Protection
Input Voltage
100 - 240 V
Input Frequency Range
50/60 Hz
Input Current
>100,000 Hours
UL, CUL, CE, CB, FCC Class B, TUV, CCC, C-tick


1 x 20+4-pin ATX
1 x 4-pin +12V
1 x 8-pin EPS12V
2 x PCI-Express
10 x 4-pin peripheral
2 x 4-pin floppy
8 x SATA
Corsair has engineered the HX620W with features such as whisper quiet thermally controlled 120mm fan, up to 84% high efficiency, combined 50A on triple +12V rails, and modular cable connections with enhanced flexible cables to provide sustained 620W output even at 50ºC to the most demanding of systems.
The HX Series is the ideal power supply for high performance and gaming PCs, Audio/Video workstations, and file servers.

Compatible with Core i7

Manufacturer Warranty

5 years limited
5 years limited

Quick Info


  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years

Customer Reviews of the Corsair CMPSU-620HX

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  • Rodney P.
  • 9/9/2014 2:29:09 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsIncredible Long Life & Reliability

Pros: I have been running this PSU since March 2007 (7-1/2 years) across two different computer builds. This PSU is as Rock-Solid reliable today as it was when I first installed it.

What more can you ask from your PSU?

Cons: None

Did you find this review helpful? Yes No

  • Michael K.
  • 5/5/2014 12:42:08 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

4 out of 5 eggsExcellent PSU

Pros: Long lasting, powerful, efficient, modular, quiet

Cons: none

Other Thoughts: Bought this PSU 4 years ago and worked great until it completely died on me a few weeks ago. Plugged it into my PSU tester and the -5V rail is only thing thats bad. Since they have a 5 year warranty, I am going to try to see what Corsair customer service can do for me. I've had power supplies last 15 years and others die within a year, so 4+ years is well worth the money.

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  • Brian M.
  • 1/17/2014 11:51:18 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsStill the best hardware I've ever owned!

Pros: I've owned this PSU for 6 years now. It's never beeped, buzzed, clicked, or failed. I put it in my case (Antec P182) SIX YEARS AGO and it has worked flawlessly since day one, and every day since.

Corsair and Seasonic truly assembled a masterpiece with this thing, I can safely say it's the best piece of PC hardware I've owned in my 25+ years of PC gaming.

Cons: Wish more of the cables (or ALL of them) were modular. I've had to wrap some of them in twist-ties and shove them on-top of the unit to get them out of the way. Only 80% efficient; barely Bronze. But it came out in 2006-2007 so I can forgive it for that. At the time it was the best PSU ever made.

Other Thoughts: When I bought this unit, the warranty was 5 years. Corsair has sinced bumped their HX warranties to 7 years, so hopefully I'm still covered. My friend is sending me his spare 620HX so I can keep using this model without having to buy a new PSU (and risk losing quality).

Did you find this review helpful? Yes No

  • Joseph D.
  • 1/7/2014 9:23:15 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat PS

Pros: This was a great power supply. Then again, when it was purchased in July 2007, It was $170.00. I will have someone local check to see if it's worth repairing. Thanks Corsair.

Cons: None.

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  • Anthony F.
  • 10/14/2013 1:35:20 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Bought this guy back in October 2007. about a month ago i was just NOW starting to have problems and the unit was replaced.

Just wanted to say thank you Corsair for a great product.

Cons: none

Did you find this review helpful? Yes No

  • Chris D.
  • 9/25/2013 7:30:02 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsStill going strong!

Pros: Bought this for a build in 2008 and it's still going strong after 5 years! Has the essential connectors to support even the newer video cards which require the additional power connectors. Has not failed through various power surges.

Cons: No complaints

Other Thoughts: Upgraded to a new a rig. i5 Ivy Bridge Core with 16 gigs of Ram oc'd at 4.3 Ghz...Geforce GTX 560 superclocked bideo card and it's still running it without any problems for about a year now.

Did you find this review helpful? Yes No

  • Kyle C.
  • 7/5/2013 7:56:39 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsgreat psu

Pros: awesome modular unit

Cons: none

Did you find this review helpful? Yes No

  • Andrew M.
  • 3/14/2013 2:23:14 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsIt was a beast, then it died violently

Pros: - Removable cabling means less unnecessary clutter in your case.
- It died violently, but it protected the rest of my computer.

Cons: - After transporting my computer home from across town the power supply died violently. The 620HX made two LOUD electrical popping noises, along with some smoke and the smell of death. It even left a burned outline of one of its sides in the case. I was very worried that everything was going to be fried.

Other Thoughts: My best guess is that there might have been a screw rolling around loose inside the case. It might have hopped into the power supply during transport and shorted something out.

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  • Jonathon B.
  • 3/1/2013 12:42:34 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsLove Corsair

Pros: I'm on the high edge of this PSU's capacity and have been running it like that for over a year. It has never faltered. Nice and quiet. The guys over at [H]ardOCP recommended it, so I bought it and I do not regret it.

Cons: Not "full modular"

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  • Erin I.
  • 12/18/2012 6:15:57 PM
  • Tech Level: High
  • Ownership: more than 1 year

2 out of 5 eggsLemon?

Pros: Well it's a working PSU that does it's job and works very well. It pushes good wattage, and can make a computer go.

Cons: Well, Unlike corsair, the thing must be a lemon. It's 4 pin CPU power cable is actually about 1 inch long? it can't reach anything. i thought i'd send it in for warranty until i found out that the warranty label is missing from this power supply or corsair doesn't send theirs with the little stickers(is this right?) so i'll try an RMA but i doubt i'll get it.

Other Thoughts: really 1 inch cord? also i heard something about it having a fan wire. but the fan used inside is 2 pin so it can't read rpm, unless it's a speed control wire but even then this PSU is missing that wire too. i'm confused. prototype or lemon?

Did you find this review helpful? Yes No

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Item#: N82E16817139002
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