Corsair TX vs. OCZ ZT 550W
by Martin Kaffei on March 26, 2012 9:30 AM EST- Posted in
- Cases/Cooling/PSUs
- Corsair
- PSUs
- OCZ
- 550W
- 80Plus Bronze
- ZT
- TX
Voltage Regulation
| +3.3V Regulation/Ripple and Noise | |
| Load | Voltage |
| 5% | +3.27% (4mV) |
| 10% | +3.18% (4mV) |
| 20% | +3.03% (6mV) |
| 50% | +2.42% (7mV) |
| 80% | -0.91% (12mV) |
| 100% | -1.81% (11mV) |
| 110% | -1.81% (14mV) |
| Crossload +12V max. | +0.94% |
| Crossload +3.3V/+5V max. | +0.60% |
| +5V Regulation/Ripple and Noise | |
| Load | Voltage |
| 5% | +0.70% (4mV) |
| 10% | +0.60% (5mV) |
| 20% | +0.40% (6mV) |
| 50% | +0.20% (11mV) |
| 80% | -1.40% (16mV) |
| 100% | -2.60% (21mV) |
| 110% | -2.80% (23mV) |
| Crossload +12V max. | +0.04% |
| Crossload +3.3V/+5V max. | -2.40% |
| +12V Regulation (Worst Ouput)/Ripple and Noise (Worst Output) | |
| Load | Voltage |
| 5% | +1.58% (3mV) |
| 10% | +1.54% (3mV) |
| 20% | +1.50% (8mV) |
| 50% | +1.00% (15mV) |
| 80% | +-0.00% (19mV) |
| 100% | -0.92% (25mV) |
| 110% | -1.00% (33mV) |
| Crossload +12V max. | -0.08% |
| Crossload +3.3V/+5V max. | +0.33% |
Noise Levels
| Loudness (subjective) | |
| Load | Opinion |
| 5% | low rotation noise and mains hum |
| 10% | low rotation noise |
| 20% | low rotation noise |
| 50% | rotation noise |
| 80% | rotation noise |
| 100% | strong fan noise |
| 110% | strong fan noise |
Efficiency and PFC
| Efficiency and Power Factor 230 VAC | ||
| Load | Efficiency | PFC |
| 5% | 72.88% | 0.770 |
| 10% | 79.64% | 0.842 |
| 20% | 84.90% | 0.889 |
| 50% | 87.10% | 0.955 |
| 80% | 86.50% | 0.972 |
| 100% | 85.27% | 0.985 |
| 110% | 84.71% | 0.989 |
| Efficiency and Power Factor 115 VAC | ||
| Load | Efficiency | PFC |
| 5% | 69.03% | 0.824 |
| 10% | 78.48% | 0.925 |
| 20% | 84.10% | 0.959 |
| 50% | 86.72% | 0.971 |
| 80% | 86.19% | 0.980 |
| 100% | 84.98% | 0.988 |
| 110% | 84.57% | 0.990 |
Some rails should be closer to the optimal value. +3.3V starts with a remarkable over voltage and ends with 1.81% under the optimal value. +12V is comparatively weak but we should keep in mind that our loads are quite high, according to the label. +12V has high absolute ripple, but as a percentage it's better than the other rails. The efficiency is good for an 80 Plus Bronze PSU, reaching up to 87% on 115VAC, though our 78.48% result at 10% load is slightly below what we have seen from Corsair.
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mikeymikec - Thursday, April 5, 2012 - link
Argh, it really goes to show how much I rely on the 'edit' button... PROOF READ BEFORE POSTING! :)