Corsair TX750 V2: New and Improved
by Martin Kaffei on May 16, 2011 6:55 PM EST- Posted in
- Cases/Cooling/PSUs
- Corsair
- PSUs
- 80Plus Bronze
- 750W
- TX V2
Voltage Regulation
| +3.3V regulation | |
| Load | Voltage |
| 10% | +1.21% |
| 20% | +1.00% |
| 50% | +0.72% |
| 80% | +0.43% |
| 100% | -0.30% |
| 110% | -0.38% |
| +5V regulation | |
| Load | Voltage |
| 10% | +1.20% |
| 20% | +1.16% |
| 50% | +0.85% |
| 80% | +0.60% |
| 100% | +0.29% |
| 110% | -0.40% |
| +12V regulation (worst rail) | |
| Load | Voltage |
| 10% | +0.75 % |
| 20% | +0.64 % |
| 50% | +0.40 % |
| 80% | +0.27 % |
| 100% | +0.11 % |
| 110% | -0.08 % |
All the rails fall clearly within ATX specifications. They start slightly over the target voltage and end with results close to 0%. Since this PSU has two 12V outputs, we selected the worst rail for the tables (which is our standard procedure). +12V shows the best regulation, and will have no trouble with higher voltages. -0.08% at overload is one of the best results we have seen.
Ripple and Noise
| +3.3V ripple quality | |
| Load | Ripple and Noise |
| 10% | 13mV |
| 20% | 14mV |
| 50% | 18mV |
| 80% | 22mV |
| 100% | 23mV |
| 110% | 25mV |
| +5V ripple quality | |
| Load | Ripple and Noise |
| 10% | 9mV |
| 20% | 11mV |
| 50% | 16mV |
| 80% | 18mV |
| 100% | 19mV |
| 110% | 21mV |
| +12V ripple quality (worst rail) | |
| Load | Ripple and Noise |
| 10% | 8mV |
| 20% | 12mV |
| 50% | 14mV |
| 80% | 26mV |
| 100% | 28mV |
| 110% | 33mV |
Both smaller rails have less than 30mV ripple and noise, making this PSU is as good as the Antec HCG if not better. +12V has higher absolute ripple, but it's actually closer to spec as a percentage. All of the rails are far away from the limit. The TX750 V2 can't beat the Corsair AX 750W, so we now know why there is such a high price difference. Of course 80 Plus Gold is another reason to buy an AX-series PSU.
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32 Comments
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TheLaw5 - Saturday, May 21, 2011 - link
SMH. Guys, please learn what the hell you are talking about. There is no difference AT ALL in performance from a single rail unit and a multiple rail unit.The only difference is how the over current protection functions. There is none of this balancing BS you speak of.
You guys call yourselves computer gurus, and meanwhile don't have a clue what you are talking about. GJGJ
DarkUltra - Sunday, May 22, 2011 - link
Hi!I've tried two different PSUs and two graphics cards, but any combination have resulted in the PSU squealing when I use the graphics card.It's especially prudent in ATI Tool and when I have high FPS in menus or old games. So now i'm on the lookout for a psu that does not squeal when the gpu or the cpu is doing bad stuff.
I hear even the latest Corsair HX850W are squealing.
http://forum.corsair.com/v3/showthread.php?t=95360
Have you tested this PSU for squealing? What 3d card did you use?
I have tested with
Mist 650W rev 3.5
Mist 650W rev 4.0
xfx geforce gtx 285
evga geforce gtx 470
I read MSI once made non-squealing graphics cards, but I haven't heard anything since.
http://www.bit-tech.net/news/hardware/2009/05/29/m...