Corsair TX750W Power Supply
by Christoph Katzer on October 30, 2008 3:00 AM EST- Posted in
- Cases/Cooling/PSUs
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.
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Beenthere - Thursday, October 30, 2008 - link
A mfg. can use different designs or components to produce a top-of-the-line PSU or lower quality components or simpler designs to make a run-of-the-mill PSU. Personally I have used the PCPC brand of PSUs for many years and I have found them to be reliable, stable, high-quality PSUs that have always delivered top performance.I personally would not buy another brand to save a few dollars when the PSU is the very heart of any PC and as such essentially determines the performance and stability of the entire PC. I realize many people will spends hundred on the latest, greatest, trick-of-the-week Video card or memory and then buy an inferior PSU to save $20.
It's foolish economics in my experience. My overclocks always seem to be equal to or better than most folks and I never experience the mysterious crashes that I read about from people using the same hardware other than a quality PSU like the PCPC units.
3DoubleD - Thursday, October 30, 2008 - link
Starting reading this hoping to find out I picked the right PSU last Christmas... but it seems I missed. Overall I've been happy with it, but perhaps I would have been even more happy with another. Do you think the ripples and noise in this PSU would greatly effect overclocking results?My only big complaint about this PSU is that I'm not very sure of whether or not I could get a case with the PSU mount on the bottom. The motherboard and CPU power cables seem to be on the short side. Christoph, have you had any experience with this?
Good article, thanks!
Denithor - Friday, October 31, 2008 - link
I have a TX750W installed in my Antec 300 (bottom mount). It's powering an Asus X38 motherboard with 4GB DDR3 and three video cards (so far): 2x8800GS and a G92 8800GTS. Runs F@H nicely. Very low noise, I cannot hear it over the two stock 300 fans, AF7P and three GPU fans (AF7P is probably the loudest thing in there). The bottom mount setup is quite nice for this rig as it pulls hot air from that "dead spot" under the lowest video card and keeps that one running fairly cool.Christoph Katzer - Thursday, October 30, 2008 - link
Hi, I think it would do fine with this PSU as it has longer cables as usual. With the 60cm/24" you will not have too many probs with bottom mounted cases. As for the ripple I think the results is rather normal. The limits are much higher.3DoubleD - Thursday, October 30, 2008 - link
Thanks for the reply, that helps a lot!... now to find the money for that case
Pyrokinetic - Thursday, October 30, 2008 - link
Interesting article that came a bit late for me. I debated whether or not to get the Corsair TX650 or the TX750, but went with the TX750 because with a rebate it was cheaper than the TX650. Should have got the TX650. Oh well, my system will in no way tax the PSU as my system will not even pull 300W at full tilt. So the TX750 should last me a long while.As for it being loud, I have four Yate Loon 120 case fans (running about 1300rpm) and a case with a mesh front (that sits on the floor), so all I can say is that it is not noticeable with my setup.
TantrumusMaximus - Thursday, October 30, 2008 - link
I would like to also thank you for such an in depth PS article. I really hope with this new test setup that you'll take a step back and build a matrix of PS statistics. I think you wouldn't even need to give a big writeup on each one just post one article that is your test setup and then start posting numbers for different existing PSUs.Very Nice.
spidey81 - Thursday, October 30, 2008 - link
I've ready several articles about the TX750W's little siblings performing extremely well. Are there any plans on testing either of these two PSU's?Here's a link to a review of the VX450W at hardwaresecrets.com. They claimed it to be one of the best if not the best 500W range PSU available, which is about optimal for most gaming pc's out there.
spidey81 - Thursday, October 30, 2008 - link
VX450W reviewspidey81 - Thursday, October 30, 2008 - link
sorry...can't get the hyperlink to work for some reason