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% | +0.61% (2mV) |
| 10% | +0.61% (2mV) |
| 20% | +0.30% (3mV) |
| 50% | +-0.00% (7mV) |
| 80% | -0.30% (9mV) |
| 100% | -0.30%(12mV) |
| 110% | -0.30% (13mV) |
| Crossload +12V max. | +0.00 % |
| Crossload +3.3V/+5V max. | -0.61 % |
| +5V Regulation/Ripple and Noise | |
| Load | Voltage |
| 5% | +0.60% (4mV) |
| 10% | +0.60% (5mV) |
| 20% | +0.40% (6mV) |
| 50% | +-0.00% (6mV) |
| 80% | -0.40 % (7mV) |
| 100% | -0.60 % (8mV) |
| 110% | -0.60 % (9mV) |
| Crossload +12V max. | +1.20 % |
| Crossload +3.3V/+5V max. | -0.20 % |
| +12V Regulation (Worst Ouput)/Ripple and Noise (Worst Output) | |
| Load | Voltage |
| 5% | +1.08% (17mV) |
| 10% | +0.92% (19mV) |
| 20% | +0.75% (23mV) |
| 50% | +0.58% (28mV) |
| 80% | +0.25% (36mV) |
| 100% | +0.08% (45mV) |
| 110% | -0.08% (47mV) |
| Crossload +12V max. | +0.50% |
| Crossload +3.3V/+5V max. | -0.42% |
Noise Levels
| Loudness (subjective) | |
| Load | Opinion |
| 5% | audible fan bearing |
| 10% | audible fan bearing |
| 20% | audible fan bearing |
| 50% | rotation noise and audible fan bearing |
| 80% | rotation noise and audible fan bearing |
| 100% | strong noise and audible fan bearing |
| 110% | strong noise and audible fan bearing |
Efficiency and PFC
| Efficiency and Power Factor 230 VAC | ||
| Load | Efficiency | PFC |
| 5% | 72.56% | 0.799 |
| 10% | 81.13% | 0.812 |
| 20% | 86.40% | 0.943 |
| 50% | 87.33% | 0.959 |
| 80% | 87.14% | 0.972 |
| 100% | 86.99% | 0.985 |
| 110% | 86.44% | 0.987 |
| Efficiency and Power Factor 115 VAC | ||
| Load | Efficiency | PFC |
| 5% | 69.44% | 0.824 |
| 10% | 79.49% | 0.925 |
| 20% | 84.30% | 0.959 |
| 50% | 86.76% | 0.971 |
| 80% | 86.23% | 0.980 |
| 100% | 85.95% | 0.988 |
| 110% | 85.66% | 0.990 |
All the rails fall clearly within ATX specifications. They start slightly over the target voltage and end with results close to 0%. +3.3V and +5V show the best regulation, and will have no trouble with higher voltages. -0.60% at overload is one of the best results we have seen so far. 0.824-0.990 PFC is very good and most users will find 86-87% efficiency more than sufficient. While it doesn't quite make 80% efficiency at 10% load (115V), it is a good 80 Plus Bronze PSU for sure. Both smaller rails have less than 20mV ripple and noise, making this PSU a good choice.
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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! :)