DC Output Stability and Quality

The 3.3V rail is a little unstable, with a low result of just 3.17V -- still within the specs but lower than we like to see. The 5V rail is similar, dropping very close to the lower limit of what is allowed; at 4.79V it is very close to falling out of spec. On the other hand, the 12V rail is very good, starting at 12.08V and only drop to 11.86V with 110% load. The 12V rail is by far the most important, and the overall voltage is good if not great.

The ripple is higher than we expected from such a unit, showing the first real flaw. 25mV on the 12V rail is still nothing to worry about, but it is much higher than what we have tested with competing power supplies.

Testing with the Chroma ATE Programmable Load Efficiency and PFC


View All Comments

  • Martimus - Thursday, November 06, 2008 - link

    Holy Voltage Ripple Batman!

    I can't believe that a Corsair PSU is that bad at load. If I were running the test, I would double check to make sure I wasn't loading it improperly, because I wouldn't expect such a poor showing. I kind of hope that it was an error on your part, since I don't know any other manufacturers that make silent PSU's with the quality Corsair usually provides. PCP&C are always rock solid, but they usually are a little loud.
  • OddJensen - Thursday, November 06, 2008 - link

    Well, I'm very happy with my Corsair units, and so are the people which I recommended them to. It's good quality without being extremely pricey. I trust mine as much as any other high quality brand. Haven't gotten a TX750 yet tho, I've mostly gone with the Seasonic sourced ones. Reply
  • billt - Tuesday, November 04, 2008 - link

    I have two Corsairs's where OEM is Seasonic; they are great and the reviews reflect that. The non-Seasonic Corsairs are not the same quality, as this review reflects Reply
  • XiZeL - Friday, October 31, 2008 - link

    i dont get why it wont do crossfire... Reply
  • JarredWalton - Sunday, November 02, 2008 - link

    It will do CrossFire just fine - it's just not CF certified by AMD/ATI. But then, is that even something that they do? I don't know. Reply
  • Barbarossa - Tuesday, November 04, 2008 - link

    Actually the TX750 is certified as well:

  • poohbear - Thursday, October 30, 2008 - link

    "We also received an HX520W recently"

    recently? This psu was one of corsairs first and its like 2 years old now, how come u're just receiving it now??
  • Christoph Katzer - Friday, October 31, 2008 - link

    I don't know why it's not clear that there are a few PSUs more than just Corsairs. We do our best but can't have all the time the latest stuff from each company. And like in this case if we forget a unit we test it later again after it settled. Reply
  • Amart - Thursday, October 30, 2008 - link

    Excellent review, especially considering the price changes on the market. I recently upgraded my PSU and this one was one of the considerations. I went with the PCP&C 610 Silencer, slightly less expensive and I like the Continuous @ 40c guarantee that they offer.

    By the way, the most recent BFG models in the price range also offer the same "40c" performance guarantee and get excellent reviews.

    I don't know why Corsair stopped using that as part of promoting their products.
  • Barbarossa - Thursday, October 30, 2008 - link

    Actually, all the TX750 is Continuous @ 50C.

    The only PSU we sell that's rated @ 40C is the CX400.


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