Corsair HX750W Power Supply Review

paulktreg - August 2, 2009
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Testing:

For more information on how we test our power supplies, please browse our testing methodology.

Electrical Safety:

Electrical Safety Test Class 1
Manufacturer/Model	Pass/Fail
Corsair HX750W	Pass

Short Circuit Protection:

I short circuited the 3V3, 5V0 and the 12V rail in turn. The power supply did shut down, and once the short was removed and the unit switched off for at least one second, resumed normal operation. Although listed here at the beginning of the testing section, I tend to leave this test until the very end, in case it doesn't quite go to plan.

DC Output Voltage Load Regulation:

Mains Input Voltage 110VAC

Corsair HX750W
DC Output Voltage Load Regulation
AC Supply = 110V / DC Load = 0W
PSU DC Rail	Measured Voltage(V)
3V3	3.35
5V0	5.11
+12V	12.19
-12V	-12.18
5VSB	5.11

Corsair HX750W
DC Output Voltage Load Regulation
110VAC - Total Load at 174W which is 23% of Rated Maximum Output Power
PSU DC Rail	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.35	3.12	10.45	3.135 – 3.465	Pass
+5V	5.11	4.74	24.22	4.75 – 5.25	Pass
+12V	12.18	10.29	125.33	11.4 – 12.6	Pass
-12V	11.61	0.33	3.83	10.8 – 13.2	Pass
+5VSB	4.97	2.03	10.09	4.75 – 5.25	Pass
Total Power Supply Loading			174W

Corsair HX750W
DC Output Voltage Load Regulation
110VAC - Total Load at 415W which is 55% of Rated Maximum Output Power
PSU DC Rail	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.34	7.90	26.39	3.135 – 3.465	Pass
+5V	5.10	9.33	47.58	4.75 – 5.25	Pass
+12V	12.16	26.87	326.74	11.4 – 12.6	Pass
-12V	11.67	0.33	3.85	10.8 – 13.2	Pass
+5VSB	4.97	2.03	10.09	4.75 – 5.25	Pass
Total Power Supply Loading			415W

Corsair HX750W
DC Output Voltage Load Regulation
110VAC - Total Load at 728W which is 97% of Rated Maximum Output Power
PSU DC Rail	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.33	11.97	39.86	3.135 – 3.465	Pass
+5V	5.10	13.82	70.48	4.75 – 5.25	Pass
+12V	12.13	49.78	603.83	11.4 – 12.6	Pass
-12V	11.85	0.34	4.03	10.8 – 13.2	Pass
+5VSB	4.96	2.03	10.07	4.75 – 5.25	Pass
Total Power Supply Loading			728W

Mains Input Voltage 230VAC

Corsair HX750W
DC Output Voltage Load Regulation
AC Supply = 230V / DC Load = 0W
PSU DC Rail	Measured Voltage(V)
3V3	3.35
5V0	5.11
+12V	12.19
-12V	-12.31
5VSB	5.11

Corsair HX750W
DC Output Voltage Load Regulation
230VAC - Total Load at 174W which is 23% of Rated Maximum Output Power
PSU DC Rail	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.35	3.12	10.45	3.135 – 3.465	Pass
+5V	5.11	4.74	24.22	4.75 – 5.25	Pass
+12V	12.18	10.29	125.33	11.4 – 12.6	Pass
-12V	11.61	0.33	3.83	10.8 – 13.2	Pass
+5VSB	4.97	2.03	10.09	4.75 – 5.25	Pass
Total Power Supply Loading			174W

Corsair HX750W
DC Output Voltage Load Regulation
230VAC - Total Load at 416W which is 55% of Rated Maximum Output Power
PSU DC Rail	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.34	7.92	26.45	3.135 – 3.465	Pass
+5V	5.10	9.39	47.89	4.75 – 5.25	Pass
+12V	12.17	26.92	327.62	11.4 – 12.6	Pass
-12V	11.74	0.34	3.99	10.8 – 13.2	Pass
+5VSB	4.97	2.03	10.01	4.75 – 5.25	Pass
Total Power Supply Loading			416W

Corsair HX750W
DC Output Voltage Load Regulation
230VAC - Total Load at 729W which is 97% of Rated Maximum Output Power
PSU DC Rail	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.33	11.73	39.06	3.135 – 3.465	Pass
+5V	5.10	13.54	69.05	4.75 – 5.25	Pass
+12V	12.13	50.05	607.10	11.4 – 12.6	Pass
-12V	11.85	0.34	4.03	10.8 – 13.2	Pass
+5VSB	4.95	2.03	10.05	4.75 – 5.25	Pass
Total Power Supply Loading			729W