1000W-1200W Roundup: Five High-End PSUs
by Martin Kaffei on December 9, 2010 1:20 PM ESTAeroCool V12XT Regulation
| +3.3V regulation | |
| Load | Voltage |
| 10% | +2.73% |
| 20% | +2.12% |
| 50% | +0.00% |
| 80% | -1.81% |
| 100% | -3.33% |
| 110% | -4.24% |
| +5V regulation | |
| Load | Voltage |
| 10% | +2.00% |
| 20% | +1.40% |
| 50% | -0.60% |
| 80% | -2.20% |
| 100% | -3.60% |
| 110% | -4.40% |
| +12V regulation | |
| Load | Voltage best/worst |
| 10% | +2.00% / +1.58% |
| 20% | +1.67% / +1.25% |
| 50% | +0.42% / -0.25% |
| 80% | +0.00% / -1.67% |
| 100% | -0.75% / -2.75% |
| 110% | -1.00% / -3.33% |
AeroCool has one of the worst regulations out of all the high-end PSUs we've tested. The DC-to-DC VRMs are very weak, so the voltage has huge drops on +3.3V and +5V. Even +12V (V4/V5/V6) could be more stable. Most PSUs with DC-to-DC have no problems with ATX conformable loads on +12V, but the voltage drops on this particular PSU make the overall quality suspect at best.
Ripple and Noise
| +3.3V ripple quality | |
| Load | Ripple and noise |
| 10% | 13.70mV |
| 20% | 15.40mV |
| 50% | 27.60mV |
| 80% | 52.80mV |
| 100% | 62.60mV |
| 110% | 71.90mV |
| +5V ripple quality | |
| Load | Ripple and noise |
| 10% | 15.60mV |
| 20% | 17.30mV |
| 50% | 28.00mV |
| 80% | 45.80mV |
| 100% | 56.30mV |
| 110% | 61.70mV |
| +12V ripple quality | |
| Load | Ripple and noise |
| 10% | 17.80mV |
| 20% | 21.00mV |
| 50% | 35.50mV |
| 80% | 88.30mV |
| 100% | 144.10mV |
| 110% | 163.50mV |
Did we accuse OCZ of having high ripple on +12V? Okay, AeroCool is definetly worse! All the rails have ripple and noise problems; at full load, every rail is out of specification, and it only gets worse at overload. 72 mV on +3,3V is certainly "impressive"...impressively bad. It's probably for the best that this unit isn't for sale in the US, because we definitely wouldn't recommend it.
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JimDDuncan - Tuesday, December 21, 2010 - link
who is your post aimed at sabresberi?mapesdhs - Monday, December 20, 2010 - link
Martin,
Just curious, how do these PSUs compare to existing units which have been out for
a while, eg. the Thermaltake Toughpower 1000W Modular? Any thoughts?
Ian.
Martin Kaffei - Monday, December 20, 2010 - link
Hey,apart from the fact that the Thermaltake (CWT 2x 500W Design) is less efficient than most actual PSUs, the voltage quality is almost perfect.
DC-DC, good caps and filtering, not faraway from Corsair HX. A proven design.
Cooling could be better, since many components are close together. However, still uncritical temps.
ghanz - Monday, January 17, 2011 - link
It would be great if Anandtech could do a roundup of a few 550w to 750w PSU units, as most mainstream users are using PSU units within this wattage range.