Thermaltake ToughPower 550W |
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AC Input | 115V / 230V 6A, 50-60 Hz |
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DC Voltage | +3.3V | +5V | +12V1 | +12V2 | -12V | +5VSB |
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Max. Output | 32A | 40A | 19A | 19A | 1.0A | 2.0A |
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530 W | 12 W | 10 W |
Tested on: P4 3.0F @ 4.0 Ghz, 1.45V. ABIT Fatal1ty AA8XE, 1GB OCZ PC2-5400 EB, Radeon X850 XT, Maxtor DiamondMax 10 SATA.
Above image shows the Ripple Voltage measurement (5 mV per vertical division, 5uS per horizontal division). 5mV from peak to bottom is an excellent result. Ripple Voltage was measured at idle.
Standard deviation 12V | 14.83 |
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Standard deviation 5V | 11.22 |
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Standard deviation 3.3V | 9.93 |
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Power Factor | 1.00 |
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Ripple Voltage 12V | 5 mV |
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Power Efficiency | 71% (320W:451W) |
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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.