In Win Commander 850W Power Supply Review

Testing:

 

 

 

 

 

 

 

 

 

 

Efficiency and Power Factor:

 

Output & Efficiency at 110VAC
DC Load (W)	AC Load (W)	PF	Efficiency (%)	Pass/Fail
0	10	0.54	N/A	N/A
172	215	0.99	80	Pass
454	547	0.99	83	Pass
842	1088	0.99	77	Pass

 

Output & Efficiency at 230VAC
DC Load (W)	AC Load (W)	PF	Efficiency (%)	Pass/Fail
0	11	0.26	N/A	N/A
172	211	0.91	82	Pass
454	534	0.95	85	Pass
842	1051	0.98	80	Pass

 

The In Win Commander 850W easily meets the ATX12V V2.2 specification and therefore gets a pass in this section. The claimed 80 Plus certification is however, not quite met, with a 77% efficiency on 110VAC at full load. The In Win Commander 850W isn't the first, and won't be the last to trip at this hurdle. Higher than 80% efficiency on 110VAC at full load appears to be quite difficult to attain. Power factor at all times is above 0.9, and as is usually the case, maintained at 0.99 at all times on 110VAC. Overall the results for the In Win Commander 850W in this section are very good.

 

AC Ripple On DC Outputs:

 

I have consistently found the AC ripple levels on the DC rails to be more or less equal with a 110VAC or 230VAC mains supply, and the IN Win Commander 850W is no different. The results given below are for 230VAC only, the values for 110VAC being virtually identical.

 

AC Ripple On 3V3 Rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 10uS/div

 

AC Ripple On 5V0 Rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 10uS/div

 

AC Ripple On 12V1 Rail at 230VAC

Oscilloscope settings: Amplitude = 100mv/div, Timebase = 10uS/div

 

In Win Commander 850W AC Ripple/Noise Measurements
DC Output	+3V3	+5V0	+12V	-12V0	+5VSB
Ripple (mV p-p)	50	50	250	60	30
Pass/Fail	Pass	Pass	Fail	Pass	Pass

 

Probably one of the worse noise levels I have seen on a 12V rail, and more than twice the 120mV limit stipulated in the ATX12V V2.2 specification.  All other levels are within specification. I will have more to say on this later.