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Seasonic X Series 760W Power Supply Review

paulktreg    -   January 19, 2011
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Testing:

Temperature, Noise Levels and Fan Speeds:

I am not going to give a pass or fail in this section, as the ATX12V V2.2 does not really have any references on which to base a decision.

Temperatures are purely for information only, as there are too many variables involved when installed in a case, which, by the way, it wasn't. Ambient temperature, processor cooling efficiency and case cooling fans all play their part on the temperature of the air entering the power supply, and consequently the temperature of the air leaving it. No valid conclusions can be made from this test.

 

Seasonic X-Series 760W (SS-760KM Active PFC F3) Temperature & Fan Speeds
Supply = 110VAC/230VAC
DC Loading(W)
Temp In (°C)
Temp Out (°C)
Δ Temp (°C)
Fan Speed (RPM)
0
N/A
N/A
N/A
0/0
144/144
N/A
N/A
N/A
0/0
379/381
24.4/24.6
36.4/33.7
12.0/9.1
556/551
798/798
24.9/25.0
36.6/33.3
11.7/8.3
1835/1830

The Seasonic X-Series 760W power supply cooling fan didn’t really kick in until it came time to delivery half its rated power of approximately 380W. The cooling fan did spring into life when delivering 144W but it was only for short bursts of a few seconds at a speed of 500 RPM or so and only once or twice a minute. It was impossible to gain any real temperature data with this sort of fan behaviour so it’s not really zero fan operation at 144W it’s more like on for two seconds, off for thirty and that’s a little difficult to quantify. There is no load test between 20% and 50% following the OCC power supply testing methodology, so it’s difficult to say at what point the cooling fan runs constantly but it’s certainly very quiet when the power supply delivers half its rated power. The fan noise does however increase noticeably when it hits 1800 RPM at full load but this is to be expected and it’s on a par with other power supplies in this class.




  1. Introduction & Closer Look
  2. Closer Look (The Power Supply)
  3. Specification & Features
  4. Testing: DC Voltage Load Regulation
  5. Testing: Efficiency, Power Factor & DC Quality
  6. Testing: Temperature, Noise Level & Fan Speed
  7. Conclusion
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