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Mushkin Joule 1000W Power Supply Review

paulktreg    -   June 6, 2010
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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.












Mushkin Enhanced Joule 1000W
Temperature & Fan Speeds @ 110/230Vac
DC Loading(W)
Temp In (°C)
Temp Out (°C)
Δ Temp (°C)
Fan Speed (RPM)


The fan curve for the Mushkin Enhanced Joule 1000W power supply included in the user manual shows fan speeds of 969, 1023, 1673 and 2347 rpm for 0, 20, 50 and 100% load. The measured values are approximately 30% higher than indicated but the power supply did remain cool throughout testing no doubt due to the elevated fan speeds in combination with high efficiency. The fan noise won't be a problem for most people at 1400 rpm, but it grew noticeably louder at full load with fan speeds approaching 2700 rpm. High fan noise at a loading of nearly 1000W is to be expected, but it's no louder than a lot of other power supplies in this class and an inevitable consequence of cooling a 1kW power supply.



For those that like to light up their PC enclosure, the Mushkin Enhanced Joule 1000W power supply comes with a choice of colored fan lighting courtesy of a miniature slide switch mounted on the rear of the power supply enclosure. These photographs were taken in what was almost total darkness, so don't expect the effect to be quite as striking. The good news, if you're anything like me, is that the slide switch offers two positions that switches the lighting off.

  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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