Visiting FSP + Aurum CM 750W Preview
by Martin Kaffei on July 21, 2011 1:50 PM EST- Posted in
- Cases/Cooling/PSUs
- PSUs
- 80Plus Gold
- 750W
- FSP
- Aurum
- CM
- Chroma ATE
Voltage Regulation
| +3.3V Regulation | |
| Load | Voltage |
| 10% | +1.58% |
| 20% | +1.21% |
| 50% | +0.15% |
| 80% | -1.06% |
| 100% | -1.61% |
| 110% | -2.27% |
| +5V Regulation | |
| Load | Voltage |
| 10% | +0.74% |
| 20% | +0.46% |
| 50% | -0.30% |
| 80% | -1.10% |
| 100% | -1.70% |
| 110% | -2.04% |
| +12V Regulation (Worst Rail) | |
| Load | Voltage |
| 10% | +1.01% |
| 20% | +0.81% |
| 50% | +0.19% |
| 80% | -0.35% |
| 100% | -0.77% |
| 110% | -0.96% |
First we take a look at the voltage regulation. All rails start relatively close to their optimal values. +3.3V and +5V reached about -2% during overload which is decent. The four +12V rails show even better results. Even the worst rail stays over -1% at highest load. FSP has btw. no problems with dynamic loads. We saw some tests from 50Hz to 10KHz where the load current decreased after a small duration with satisfying voltage results.
Ripple and Noise
| +3.3V Ripple Quality | |
| Load | Ripple and Noise |
| 10% | 26mV |
| 20% | 23mV |
| 50% | 31mV |
| 80% | 38mV |
| 100% | 42mV |
| 110% | 44mV |
| +5V Ripple Quality | |
| Load | Ripple and Noise |
| 10% | 18mV |
| 20% | 18mV |
| 50% | 21mV |
| 80% | 30mV |
| 100% | 40mV |
| 110% | 46mV |
| +12V Ripple Quality (Worst Rail) | |
| Load | Ripple and Noise |
| 10% | 30mV |
| 20% | 32mV |
| 50% | 45mV |
| 80% | 72mV |
| 100% | 97mV |
| 110% | 116mV |
These ripple & noise measurements tell us that this Gold series was planed as an affordable offer while most other 80Plus Gold PSUs show better results -- for much higher prices. +5V and +12V are very close to 1% ripple & noise. However all rails are within ATX specification and most PC systems shouldn't reach 100% load or more. Those results from the +3.3V rail with 26mV at low load and 23mV at a higher load are very unusual.
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Zap - Saturday, July 23, 2011 - link
The flat modular cables look pretty nice!Martin Kaffei - Saturday, July 23, 2011 - link
Well, I like them more than the ones from Corsair since they have no real sleeving like FSP. Therefore Corsair uses a better design.futurepastnow - Sunday, July 24, 2011 - link
I've owned a couple of FSP power supplies. I've always thought of them as makers of high-quality but low-polish PSUs... stable voltages and no problem delivering their rated output, but noisy and inefficient, with unsleeved cables. Nice to see they're addressing those shortcomings.As a side note- Isn't it interesting how many companies are headquartered in Taiwan, enemy of China, with factories on the mainland?
Martin Kaffei - Monday, July 25, 2011 - link
Taiwan is not an enemy, it's more like another interpretation of China (or what it could be). In addition Taiwan is just semi-independent. No reason for China to see their activities as provocations at the moment.