| Antec Signature 650 Power Supply Review |
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Real-time pricing for Corsair CMPSU-650TX |
| Corsair 650-Watt Power Supply - ATX 120mm Fan SLI-Ready SATA-Ready 80Plus TX650W CMPSU-650TX |
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| Overload Tests |
 Before overloading power supplies we always test first if the over current protection (OCP) circuit is active and at what level it is configured. In order to do that we configured our load tester with a low (1 A) current on its +12V1 input and increased current at +12V2 (which was connected to the power supply +12V2 rail) until the power supply shut down. This happened when we tried to pull 30 A or more from +12V2. Even though OCP was clearly active, we think that it was configured at a value that is little bit high, since the label states a 22 A limit for +12V2 rail. Over power protection (OPP or OLP) was active, which is terrific. So we maxed out all the power supplies outputs until it shut down. The values we could pull from this unit with it still working you can see below. Input | Maximum | +12V1 | 29 A (348 W) | +12V2 | 29 A (348 W) | +5V | 19 A (95 W) | +3.3 V | 19 A (62.7 W) | +5VSB | 3 A (15 W) | -12 V | 0.5 A (6 W) | Total | 868.4 W | % Max Load | 133.6% | Room Temp. | 47.5º C | PSU Temp. | 51.9º C | AC Power (1) | 1,038 W | Efficiency (1) | 83.6% | | AC Power (2) | 1,084.0 W | | Efficiency (2) | 80.1% | | AC Voltage | 99.5 V | | Power Factor | 0.998 |
As you can see we could pull practically 870 W from this power supply at a room temperature between 45º C and 50º C and it was working perfectly with very low noise levels (33 mV maximum at +12V1) and efficiency still above 80%. Really amazing. |
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 | Corsair CMPSU-650TX
Corsair Corsair TX & Power Supply CMPSU-650TX ATX12V EPS12V 650w TX Series 80 Plus Certified Power Supply CORSAIR CMPSU-650TX C42N72
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