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Xigmatek NRP-MC851 850W |
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Performance
The UL number E161451 reveals that the PSU is made by OEM manufacturer Channel Well Technology for Xigmatek.
| Xigmatek NRP-MC851 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| AC Input | 100V-240V, 5A-10A, 50-60 Hz | ||||||||
| DC Voltage | +3.3V | +5V | +12V1 | +12V2 | +12V3 | +12V4 | +5VSB | ||
| Max. Output | 30A | 30A | 18A | 18A | 30A | 30A | 3A | ||
| 180 | 744W | 15W | |||||||
| 850W | |||||||||
Tested on: AMD Athlon64 FX-62 @ 2800 MHz, ABIT AT8, 2x 512 MB DDR400, WD Raptor 36 GB, Radeon X1900 XTX + Radeon X1900 XTX Crossfire
The 12V and the 5V lines are very stable, on the 3.3V line we can see some bigger fluctuations. The default voltage level of the 3.3V line seems a bit low with around 3.23V, but these are manufacturing variances.
The ripple voltage looks good as well, with an amplitude of 16 mV from top to bottom.
| Standard deviation 12V | 5.06 |
|---|---|
| Standard deviation 5V | 4.13 |
| Standard deviation 3.3V | 7.60 |
| Power Factor | 0.97 |
| Ripple Voltage 12V | 15.8 mV |
| Power Efficiency @ 320 W | 85% (320W:376W) |
Standard deviation is a statistical term, which tells how far away from the average the measurements are. In other words it's the average of the average.
A large standard deviation indicates that the data points are far from the average and a small standard deviation indicates that they are close within the average.
The efficiency rating of the Xigmatek NRP-MC851 is very impressive. It can easily take the number one spot of our test group with over 85%.
