Silverstone SST-ST85F Strider 850W |
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AC Input | 100V-240V, 12-6A, 50-60 Hz |
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DC Voltage | +3.3V | +5V | +12V1 | +12V2 | -12V | +5VSB |
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Max. Output | 25A | 30A | 35A | 35A | 0.5A | 3.0A |
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180W | 420W | 420W | 6W | 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
For a PSU in this class, all rails are quite stable. While we can clearly see some small dips while load is high, they are far from reaching critical levels.
The ripple voltage was measured on the 12V line at idle. With an amplitude of 17.2 mV it is only about average.
Standard deviation 12V | 6.33 |
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Standard deviation 5V | 3.07 |
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Standard deviation 3.3V | 5.36 |
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Power Factor | 0.97 |
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Ripple Voltage 12V | 17.2 mV |
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Power Efficiency @ 320 W | 81% (320W:394W) |
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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.
Wow! Silverstone claims 80+ and the ST85F is the first unit to be able to deliver that in our efficiency test. If you look at how big of a lead this PSU has over other products, I must say I'm very impressed by it.