Corsair AX750 80 Plus Gold: Putting Corsair's Best to the Test
by Martin Kaffei on November 30, 2010 12:00 AM EST- Posted in
- Cases/Cooling/PSUs
- Corsair
- PSUs
- 80Plus Gold
- 750W
Voltage Regulation and Quality
| +3.3V regulation | |
| Load | Voltage |
| 10% | +0.91% |
| 20% | -1.21% |
| 50% | -1.81% |
| 80% | -3.03% |
| 100% | -3.02% |
| 110% | -3.64% |
| +5V regulation | |
| Load | Voltage |
| 10% | -0.30% |
| 20% | -1.00% |
| 50% | -1.80% |
| 80% | -2.83% |
| 100% | -3.21% |
| 110% | -3.83% |
| +12V regulation | |
| Load | Voltage |
| 10% | +2.50% |
| 20% | +2.00% |
| 50% | +1.25% |
| 80% | +0.42% |
| 100% | +0.00% |
| 110% | -0.25% |
The +12V voltage regulation is tight, while the weaker +3.3V and +5V drop to 3.6-3.8% below the optimal level. Nevertheless, all voltages are within the ATX specification. +5VSB starts with 5.10V and drops to 4.90V.
Ripple and Noise
| +3.3V ripple quality | |
| Load | Ripple and noise |
| 10% | 6.90mV |
| 20% | 8.70mV |
| 50% | 9.10mV |
| 80% | 10.50mV |
| 100% | 11.30mV |
| 110% | 12.30mV |
| +5V ripple quality | |
| Load | Ripple and noise |
| 10% | 6.70mV |
| 20% | 6.90mV |
| 50% | 7.80mV |
| 80% | 9.40mV |
| 100% | 10.60mV |
| 110% | 13.40mV |
| +12V ripple quality | |
| Load | Ripple and noise |
| 10% | 9.60mV |
| 20% | 10.20mV |
| 50% | 12.70mV |
| 80% | 13.10mV |
| 100% | 14.30mV |
| 110% | 17.40mV |
There is hardly any ripple on the rails. They're always under 20mV and there are no remarkable spikes/transients. Definitely some nice work here and worthy of praise!
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34 Comments
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Qbah - Friday, December 3, 2010 - link
And this thing is amazing. The silence is simply incredible! Best PSU there is IMO.akashagarawal3d - Monday, December 20, 2010 - link
hi! all of u: i want to know that will it support my system:amd phenom 2 x4 965 be @4ghz
6gb ddr3-1600 mhz kingston ram oc
msi -890fxa-gd70
benq g2420hd
xfx hd 6970 2gb gddr5 950/1400
will it support my sys.
DarkUltra - Sunday, January 23, 2011 - link
Hi!I have horrible squealing when I have high FPS in games (game menus especially) or other type of GPU load. I believe it is a combination of my PSU and graphics card. I've tried two cards and two psus. GeForce gtx 285 and gtx 470 both squeal much more with a Mist 650W rev 4.0 than the Mist 650W rev 3.5. The only difference is that the rev 4.0 have one 50A 12V rail while the quieter rev 3.5 have four 20A 12V rails.
http://www.bit-tech.net/news/hardware/2009/05/29/m...
The mists are known to be squealy I heard, but how about the Corsair AX750 80 Plus Gold? Can you try it with a few recent 3d cards? I'm looking for a quiet psu/gpu combo.
Nzeman - Wednesday, March 16, 2011 - link
Thanks for the review, great as always. I will be getting this PSU in my new build for sure.