1000W-1200W Roundup: Five High-End PSUs
by Martin Kaffei on December 9, 2010 1:20 PM ESTCooler Master Silent Pro Gold 1200W Regulation
| +3.3V regulation | |
| Load | Voltage |
| 10% | +2.72% |
| 20% | +2.42% |
| 50% | +1.21% |
| 80% | +-0.00% |
| 100% | -0.61% |
| 110% | -0.91% |
| +5V regulation | |
| Load | Voltage |
| 10% | +0.60% |
| 20% | +0.40% |
| 50% | -0.40% |
| 80% | -1.20% |
| 100% | -1.80% |
| 110% | -2.00% |
| +12V regulation | |
| Load | Voltage |
| 10% | +3.08% |
| 20% | +2.83% |
| 50% | +2.42% |
| 80% | +2.08% |
| 100% | +1.75% |
| 110% | +1.25% |
The +12V rail is always 1-3% over the optimal value, while +5V drops to -2%; that's still fine and better than many other PSUs. +3.3V shows a larger drop but starts very high, so all rails are easily within specs.
Ripple and Noise
| +3.3V ripple quality | |
| Load | Ripple and noise |
| 10% | 10.10mV |
| 20% | 12.40mV |
| 50% | 19.50mV |
| 80% | 24.30mV |
| 100% | 28.40mV |
| 110% | 28.60mV |
| +5V ripple quality | |
| Load | Ripple and noise |
| 10% | 20.50mV |
| 20% | 20.50mV |
| 50% | 34.90mV |
| 80% | 48.50mV |
| 100% | 49.00mV |
| 110% | 51.30mV |
| +12V ripple quality | |
| Load | Ripple and noise |
| 10% | 22.10mV |
| 20% | 30.00mV |
| 50% | 62.30mV |
| 80% | 80.10mV |
| 100% | 85.80mV |
| 110% | 94.80mV |
+5V is above the specification at 110% overload, similar to the measurements from Cougar. With up to 100mV ripple and noise +12V has worse results than the Cougar GX series, but lower ripple on +3.3V. Which of these two is better? Let's look at the noise results before we try to decide.
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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.