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CORSAIR HX Series CMPSU-520HX 520W ATX12V v2.2 and EPS12V 2.91 SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC Compatible with Core i7 Power Supply

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  • ATX12V v2.2 and EPS12V 2.91
  • 100 - 240 V
  • 80 PLUS Certified

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Engineered to support intense power needs, the Corsair HX520w is ideal for high performance and gaming systems. Delivering 520 Watts of continuous power, the power supply is perfect for dual-GPU setups, supporting the latest ATX12V v2.2 and EPS12V 2.91 standards, and backward compatible with ATX12V 2.01 systems. The circuitry design offers up to 80% efficiency under wide load range. Active Power Factor Correction increases efficiency and delivers reliable power. The ultra-quiet 120 mm fan varies the RPM with the temperature, offering greater airflow as needed.

Enhanced modular flexible cables offer easier cable routing and clean up clutter. This increases airflow and aids in heat dissipation. Over Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection shield your critical system components from errant power fluctuations. The capacitors used in the HX520w are of 105oC industrial grade and offer unparalleled performance with high reliability.

The universal AC input 90 ~ 264 V automatically scans and adjusts the HX520w to operate at the available input voltage. Gold-plated connectors offer oxide-free and low-resistance connectivity to your system components. Triple 12 V rails provide independent and reliable power to your CPU, your video card and to the other components of your system.

  • newegg ATX12V v2.2 and EPS12V Compatible Compatible with the ATX12V v2.2 and EPS12V standards, the CORSAIR HX520w 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 520W Maximum Power A maximum power of 520W delivers safe, reliable output for high-end computer systems.
  • newegg Modular Cable Design The modular cable design allows use of only the cables you need resulting in improved internal airflow and reduced system clutter.
  • newegg NVIDIA SLI Certified The CORSAIR HX520w 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-520HX

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Verified Owner
4/ 5
Quiet, but as a result can run hot.

Pros: Quiet. Modular if you like that sort of thing. Cables are "slick" black colored, not bulky, pleasing to the eye. 120mm fan, although I'd like to see more PSUs with 130 and 140mm cooling fans. Great manufacturer warranty.

Cons: This baby is quiet, but that also means it runs hot. If you water cool, that may not a problem for you. I heatsink and air cool, so this caused concerns for me.

If your video card/CPU/motherboard already run hot, I advise to not use this PSU with your setup until you find a cooling arrangement within your case and its hottest components to get most of the hot air out BEFORE it reaches the PSU at the top of your case. Basically, this power supply better not be the only thing pulling air out of your computer case, because even if this PSU lives to or outlasts its warranty, I'd wager that your other computer components probably won't. At least not under the heat duress buildup that this quiet PSU encourages within a case.

Other Thoughts: This PSU has immediately powered off the instant that a power surge hit my house, so don't count on it to keep your PC running through a power surge without so much as a hiccup like some PSUs can.

I found a great air cooling arrangement for my particular case that's very effective yet still quiet (I simply HAD TO after buying this PSU). Compared to the 43 deg idle / 58 load I was getting with this PSU before the new cooling arrangement, now my AMD 64 X2 5200+ at stock speed goes from 37 deg at idle to 47 at full load. The PSU that I replaced with this one was simply pushing more air out of my case, but once I compensated for that air movement difference this Corsair made itself quietly right at home.

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Verified Owner
5/ 5
11 Years and Still Going Strong

Pros: That's right. This review was posted February of 2018, and I purchased this incredible power supply on Jan 19, 2007. The Corsair 520HX has been discontinued for what, 10 years, but thought I'd post this raving review of such a wonderful investment. This wonderful part has been in 24/7 use in 3 separate PCs (2 custom-built servers and 1 desktop) over the last 11 years, with varying configurations. I gave it a dust/air cleaning during each PC rebuild, which probably helped keep it going strong. The 520HX powered PCs with hard drive numbers ranging from 5 to 9 (a lot of drives). Currently, this powers my fileserver with 9 hard drives, an SSD, a SD card reader, a Core i7-2600K CPU with motherboard, a Geforce GTX 460 video card, and 32GB RAM. I'm amazed this PSU has lasted this long, and no signs of failing anytime soon. Thank you, Corsair.

Cons: n/a

Other Thoughts: How many computer components do you have that lasted 11 years? I would definitely pick the Corsair HX-series again.

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Verified Owner
5/ 5
Lasted almost 10 years

Pros: - Quiet
- Gets the job done

Cons: - Finally choked just short of 10 years, making very loud noises and causing the CPU to overwork

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Verified Owner
5/ 5
Only 9 years!

Pros: Quite and operated flawlessly on an almost daily basis for over nine years

Cons: Failed with high pitched whine and dramatic little puff of smoke.

Other Thoughts: Going to go buy another Corsair!

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Verified Owner
5/ 5
the little power supply that could

Pros: has lasted me 9 freaking years! super durable and tough

Cons: none

Other Thoughts: love corsair products

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Ownership: more than 1 year
Verified Owner
5/ 5
Lasted 8 years and Still Works Perfectly!

Pros: Very Reliable lasting 8 years and still works flawlessly
Very Quiet Also

Cons: None at all.

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Ownership: more than 1 year
Verified Owner
5/ 5
Simply Incredible

Pros: I have been running this PSU since January 2007 (7-1/2 years) across three 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?

This has led to the purchase of 4x more PSU from Corsair, and all of them are still humming a long just fine as well.

Cons: None what so ever.

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Ownership: more than 1 year
5/ 5
Very stable power supply

Pros: I've had this power supply in continuous use for the past two and-a-half years powering my backup pc every time I've had to use it and it has been very stable. Never a crash or lockup due to "dirty" or unstable power, several due to unstable overclocks though (wrong settings, my fault). It is pretty dead-on for voltage outputs. 12V rail puts out 12.02-12.03V under load, 5V rail is 4.96-4.98V, 3.3V rail is 3.38V. I tested it with my digital multimeter. The 3.3V rail is a little high, but still well within the ATX specifications. I will probably use it to power my next backup PC as well when I upgrade it to a newer platform, assuming it is still in good working order then.

Cons: The only cons I can think of is that it only has two 6-pin PCI Express power cables, so no SLI or Crossfire with higher-power cards. Also, the PCI Express cables are a little short, so that could be a problem with bottom-mounted power supplies in large cases.

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