Corsair TX750 V2 750W & TX850 V2 850W Power Supply Review

paulktreg - May 11, 2011
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Testing:

TX850V2

Efficiency and Power Factor:

Corsair TX850V2 Efficiency & Power Factor
Supply = 110VAC/50Hz
DC Load (W)	0	172	433	827
DC Load As A % Of Maximum	N/A	20	51	97
Efficiency	N/A	81	85	80
Power Factor (PF)	0.82	0.98	0.99	0.99

Whilst not quite meeting the 80 Plus Bronze standard following the OCC testing methodolgy the Corsair TX850V2 did manage a maximum efficiency of 85% at approximately 50% DC load. The power factor is well within the required level of 0.9 which is usually the case.

Corsair TX850V2 Efficiency & Power Factor
Supply = 230VAC/50Hz
DC Load (W)	0	170	434	823
DC Load As A % Of Maximum	N/A	20	51	97
Efficiency	N/A	81	86	83
Power Factor (PF)	0.42	0.94	0.97	0.98

The Corsair TX850V2 produced efficiency levels that are a touch higher when supplied from 230VAC with a maximum level of 86%. Power factor levels are typical of a power supply in this class and maintained above 0.9 once the power supply was loaded at 170W.

Whilst these figures aren't spectacular the TX850V2 produced a set of results that are on a par with other power supplies in this class following the OCC testing methodology.

AC Ripple On DC Outputs:

I have consistently found the AC ripple levels on the DC rails to be more or less equal with an 110VAC or 230VAC mains supply. The results given below are for 230VAC only but I will continue to check the levels at 110VAC during testing and publish them below if there are any significant differences.