Tuniq Potency 550W Review

paulktreg - August 24, 2008
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Testing:

For more information on our testing system, please browse our testing methodology.

Electrical Safety

Electrical Safety Test Class 1
Manufacturer/Model	Pass/Fail
Tuniq Potency 550W	Pass

Short Circuit Protection

Quote: "When any set of DC output is in short circuit, the power supply shall be latched into the status of shutdown in order to protect the circuits and component from being damaged."

In order to test this claim, I short circuited the 3V3, 5V0 and all four 12V lines 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

This time around, I have tested at 240VAC and 110VAC. This will provide extra information for those of you using the lower mains input voltage. Before you say it should be 120VAC, all I can say at this stage is I haven't been able to lay my hands on a variac. The 110VAC test has been performed using a power tool isolation transformer commonly found on building sites up and down the country. The difference between the results at 110VAC and 120VAC will be negligible, as will the frequency difference of 50 or 60Hz. I have tried to space my load tests evenly over the full range, result tables below, and I have included the information in graphical form for the first time. The output voltages for the 12V1 and 12V2 lines are very close, and I have plotted an average of the two voltages for the graphs.

Testing @ 110VAC

110VAC - Total Load at 112W which is 20% of Rated Maximum Output Power.
PSU DC Line	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.37	3.15	10.61	3.135 – 3.465	Pass
+5V0	4.99	4.65	23.20	4.75 – 5.25	Pass
+12V0(1)	12.27	2.59	31.77	11.4 – 12.6	Pass
+12V0(2)	12.29	2.50	31.95	11.4 – 12.6	Pass
-12V0	11.66	0.35	4.08	10.8 – 13.2	Pass
+5VSB	4.97	2.18	10.83	4.75 – 5.25	Pass
Total Power Supply Loading			112W

110VAC - Total Load at 286W which is 52% of Rated Maximum Output Power.
PSU DC Line	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.34	7.81	26.08	3.135 – 3.465	Pass
+5V0	4.94	9.15	45.20	4.75 – 5.25	Pass
+12V0(1)	12.20	8.18	99.80	11.4 – 12.6	Pass
+12V0(2)	12.27	8.15	100.00	11.4 – 12.6	Pass
-12V0	11.79	0.35	4.13	10.8 – 13.2	Pass
+5VSB	4.97	2.18	10.83	4.75 – 5.25	Pass
Total Power Supply Loading			286W

110VAC - Total Load at 399W which is 72% of Rated Maximum Output Power.
PSU DC Line	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.28	11.38	37.33	3.135 – 3.465	Pass
+5V0	4.90	13.52	66.25	4.75 – 5.25	Pass
+12V0(1)	12.20	11.38	138.84	11.4 – 12.6	Pass
+12V0(2)	12.25	11.54	141.36	11.4 – 12.6	Pass
-12V0	11.88	0.35	4.16	10.8 – 13.2	Pass
+5VSB	4.96	2.17	10.76	4.75 – 5.25	Pass
Total Power Supply Loading			399W

110VAC - Total Load at 541W which is 98% of Rated Maximum Output Power.
PSU DC Line	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.23	13.89	44.86	3.135 – 3.465	Pass
+5V0	4.84	18.80	90.99	4.75 – 5.25	Pass
+12V0(1)	12.11	18.13	219.55	11.4 – 12.6	Pass
+12V0(2)	12.22	13.98	170.83	11.4 – 12.6	Pass
-12V0	12.07	0.36	4.34	10.8 – 13.2	Pass
+5VSB	4.94	2.16	10.67	4.75 – 5.25	Pass
Total Power Supply Loading			541W

Testing @ 240VAC

240VAC - Total Load at 113W which is 21% of Rated Maximum Output Power.
PSU DC Line	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.37	3.15	10.61	3.135 – 3.465	Pass
+5V0	4.98	4.67	23.26	4.75 – 5.25	Pass
+12V0(1)	12.27	2.59	31.78	11.4 – 12.6	Pass
+12V0(2)	12.29	2.60	31.95	11.4 – 12.6	Pass
-12V0	11.66	0.35	4.08	10.8 – 13.2	Pass
+5VSB	4.97	2.20	10.93	4.75 – 5.25	Pass
Total Power Supply Loading			113W

240VAC - Total Load at 286W which is 52% of Rated Maximum Output Power.
PSU DC Line	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.34	7.83	26.15	3.135 – 3.465	Pass
+5V0	4.97	9.16	45.52	4.75 – 5.25	Pass
+12V0(1)	12.20	8.11	98.94	11.4 – 12.6	Pass
+12V0(2)	12.26	8.17	100.16	11.4 – 12.6	Pass
-12V0	11.78	0.35	4.12	10.8 – 13.2	Pass
+5VSB	4.97	2.18	10.83	4.75 – 5.25	Pass
Total Power Supply Loading			286W

240VAC - Total Load at 400W which is 73% of Rated Maximum Output Power.
PSU DC Line	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.28	11.51	37.75	3.135 – 3.465	Pass
+5V0	4.83	13.66	65.98	4.75 – 5.25	Pass
+12V0(1)	12.20	11.40	139.08	11.4 – 12.6	Pass
+12V0(2)	12.26	11.57	141.85	11.4 – 12.6	Pass
-12V0	11.88	0.35	4.16	10.8 – 13.2	Pass
+5VSB	4.96	2.19	10.86	4.75 – 5.25	Pass
Total Power Supply Loading			400W

240VAC - Total Load at 547W which is 99% of Rated Maximum Output Power.
PSU DC Line	Measured Voltage(V)	Measured Current (A)	Load Power (W)	ATX12V V Limits (V)	Pass/Fail
+3V3	3.22	13.88	44.69	3.135 – 3.465	Pass
+5V0	4.80	19.14	91.87	4.75 – 5.25	Pass
+12V0(1)	12.09	18.58	224.63	11.4 – 12.6	Pass
+12V0(2)	12.19	14.00	170.66	11.4 – 12.6	Pass
-12V0	12.02	0.36	4.33	10.8 – 13.2	Pass
+5VSB	4.95	2.18	10.79	4.75 – 5.25	Pass
Total Power Supply Loading			547W