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Review: Enermax REVOLUTION 85+ PSU: raising the bar and price

by Tarinder Sandhu on 26 June 2009, 21:24 3.65

Tags: Enermax REVOLUTION 850W, Enermax (8093.TWO)

Quick Link: HEXUS.net/qassp

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Performance and noise

Loading up a six-rail PSU is intrinsically more complicated than apportioning the load on single- and quad-rail supplies in the form of the Corsair HX850W and Cooler Master UCP 900, respectively. 

Readings under load Power & efficiency Temperatures
PSU
+12V1 +12V2 +12V3 +12V4 +12V5 +12V6 +5V +3.3V -12V +5VSB Input power Ideal output Actual output Efficiency Ambient temp. PSU temp (start) PSU temp finish (case and internal) Temp. delta
Enermax REVOLUTION 85+ Voltage 12.105 12.027 12.04 12.123 11.98 11.945 5 3.247 -11.57 4.935 927 852.1
852.03 91.9% 28 28.6 N/A N/A
Current 7 6.5 12.5 2 25 12.5
Corsair HX850 Voltage 12 N/A N/A N/A N/A N/A 5.04 3.245 -12.1 5.015 933 851.1 851.08 91.2% 27.5 28 37.4 (42.5) 9.4
Current 65 N/A N/A N/A N/A N/A
Cooler Master UCP 900 Ultimate Voltage 11.96 11.882
12.04 12.047 N/A N/A 4.98 3.267 -12 4.845 1011 901.75 900.47 89.1% 28.3 26.5 39.9 (58) 13.4
Current 18 14 18.75 18.75 N/A N/A

Performance

What we can see from the numbers is that the Enermax REVOLUTION 85+ produces fantastic efficiency and solid 12V lines when under duress.

The performance stays consistent on variable-load settings, too, pushing efficiency above 85 per cent in all cases.

Such is the casing that it makes it difficult to obtain accurate temperature readings for the PSU, hence why that particular section is left unfilled.


Noise

The fan is practically inaudible over background noise when the PSU's running at, say, 50 per cent load. Even at full tilt, which is a situation we have to engineer rather than being real-world, it's quieter than most and would only cause slight irritation if silence is absolutely paramount.

Performance, then, is solid to excellent, no matter which facet we look at.