Cooler Master Silent Pro M1000 1000W
by Martin Kaffei on September 5, 2010 10:30 PM EST- Posted in
- Cases/Cooling/PSUs
- PSUs
- 80Plus
- Cooler Master
- Silent Pro
Efficiency and PFC
| 230VAC, 50Hz | ||
| Load | Efficiency | PFC |
| 10% | 81.95% | 0.892 |
| 20% | 86.49% | 0.959 |
| 50% | 87.03% | 0.975 |
| 80% | 86.40% | 0.980 |
| 100% | 84.38% | 0.981 |
| 110% | 83.29% | 0.981 |
| 115VAC, 60Hz | ||
| Load | Efficiency | PFC |
| 10% | 83.07% | 0.900 |
| 20% | 84.68% | 0.952 |
| 50% | 86.42% | 0.979 |
| 80% | 83.92% | 0.986 |
| 100% | 81.11% | 0.990 |
| 110% | 79.91% | 0.996 |
We have used the local mains voltage of 230V and 50 Hz as well as the American mains voltage of 115V and 60 Hz, where the efficiency is slightly lower but the power factor is slightly higher. On 230 VAC 82% efficiency are already reached at 10% load, where the earlier tested Seasonic X-Series 750W managed to achieve even higher efficiency. Even so Cooler Master keeps its promises as well, because it is only certified with 80Plus Bronze. The result at 115VAC is up to 86.42% efficiency, while at 230VAC 87% are reached.
On 230VAC the efficiency also retains on an acceptable level on 10% overload, while it drops faster below 85% on 115VAC and the Silent Pro completes this measurement with an efficiency of 79.91%. But at 115VAC it can excel with a high power factor, which never falls short of 0.90 and quickly rises up to 0.99. On 230VAC the rise is steeper and the PSU only catches up on higher loads. At its best it delivers a power factor of 0.981.
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FinBenton - Monday, September 6, 2010 - link
I have this PSU, it has been working ok but computer cannot go to sleep with this psu and fan is definitely audible even when no stress on hardware.Beenthere - Monday, September 6, 2010 - link
Don't care for the flat cables at all. They are a PITA and obstruct airflow. With quiet fans available there is little need for noise these days.hsew - Monday, September 6, 2010 - link
It's too bad we don't see more PSU reviews from this site more often. This is one of the few sites that properly tests PSUs.redwolfe98 - Tuesday, September 7, 2010 - link
every review of a "cooler master" power supply that i read mentions some defect..having half of the air-intake blocked is stupid..
pkoi - Tuesday, September 7, 2010 - link
Heatsinks have way too little surface area.pkoi - Tuesday, September 7, 2010 - link
What a piece of S...Imagginer - Tuesday, September 7, 2010 - link
Power Supplies this strong are made for CF and SLI gymnastics, right? So if you've got 2 or 3 high end graphic cards stacked how are you going to cool them? Passively?....I don't think so. Now, I dont know how load those coolers are going to be but one can bet they're gonna be loader than 20dba......so this fuss about 20dba being too load is irrelevant or should we say ridiculous...If you're building audio workstation...that's another story....but you're not gonna need 1000W, thats for sure...
Imagginer - Tuesday, September 7, 2010 - link
PS.Who needs 1000W PS anyway.... 99,9999% of people get nothing with it but bragging rights...
My 625W Enermax is more than I will ever need and even with that I often ask myself if I ever am gonna need that much power.... taking into consideration that my i7 920 and HD 4870 are not exactly 'power saving components'....
jdietz - Tuesday, September 7, 2010 - link
Agreed. 1kW is far too much for most PCs. One of my PCs has 380W PS and the other has 330W PS. Both have a video card installed. If you have only one video card (read: 90% of PC owners), you don't need over 350W.Martin Kaffei - Tuesday, September 7, 2010 - link
Hi,for my next review I got an Antec Earth Watts Green 380W. Hope, you'll like it.