Corsair HX750W Power Supply Reviewpaulktreg -
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The packaging of the Corsair HX750W does nothing to help the environment. The box and user manual could easily be manufactured from recycled materials, but alas, no mention on the box or packaging that this is the case. In addition, the use of foam as a power supply protector and the cloth power supply bag are really unnecessary; there must be an alternative? What does give the HX750W the edge over its competitors in this category is the best efficiency I have ever seen in a power supply tested for OCC, which will, over time, probably outweigh any cost incurred for the packaging, but does this excuse Corsair from trying harder in the environmental stakes.
Price Per the Watt:
Power Supply Corsair HX750W at $164.99 = $0.22/Watt (July 2009)
The Corsair HX750W is, without doubt, one of the best power supplies I have tested for OCC, although the testing phase wasn't without problems. The Corsair HX750W is certified to 80 Plus Gold according to the 80 Plus website and the literature that was supplied with the review unit, but it didn't quite hit the mark during testing. Corsair was contacted by OCC and in a promptly answered email we were informed the Corsair HX750W has been adjusted down to 80 Plus Silver, which is reflected on the Corsair website (but as of 07/28/09 not on the 80 Plus website). The Corsair HX750W was designed to comply with the 80 Plus Silver specification, but the unit submitted for testing qualified for 80 Plus Gold certification. The margin however was not large enough to ensure that every HX750W power supply produced would meet the 80 Plus Gold standard and consequently Corsair felt it could not make a marketing claim based on results that were marginal. As such, Corsair has chosen to market the HX750W as 80 Plus Silver, not Gold.
The Corsair HX750W is an 80 Plus Silver certified power supply and the figures obtained during testing confirmed this with the efficiency peaking at a massive 90% on 230VAC. Combine the excellent efficiency with top notch DC voltage load regulation and low ripple/noise on all the rails, and the Corsair HX750W is up there with the best. The box lid carries the Nvidia SLI Ready logo, but I wasn't able to confirm this on the Nvidia SLI website, so perhaps it will appear in the next update. The Corsair HX750W has four 6+2-pin PCI-E connectors, making it the ideal power supply for any high end SLI or Crossfire configuration, especially when you consider it delivered 50A on the 12V rail with very low noise.
This is a great power supply that I would not hesitate to recommend to anybody looking for a power supply in this range. You will get better efficiency from the Corsair HX750W across its full output range than most power supplies can manage at peak, so why not fit one anyway and wait for the word overkill to rear its ugly head. Imagine the TX750W with marginally better performance and modular cables and that about sums up the HX750W. I have no hesitation in awarding the Corsair CMPSU-750HX an Editors' Choice award.
- Excellent DC voltage load regulation
- High DC quality
- 80 Plus Silver certification
- 7 year warranty
- Modular design