Thermaltake Toughpower Grand 650W Review

Load Testing

Test 1 (74.45W Load)

Rail	Load	Voltage	Ripple
12V	2.38A	12.07V	7.6mV
5V	5.08A	5.08V	6.4mV
3.3V	4.87A	3.31V	5.0mV
−12V	0.1A	−12.11V	12.2mV
5Vsb	0.51A	5.08V	9.6mV
AC Power	86.5W
Efficiency	86.07%
Power Factor	0.78
Intake Temp	30°C
Exhaust Temp	32°C

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Test 2 (160.84W Load)

Rail	Load	Voltage	Ripple
12V	9.35A	12.06V	7.4mV
5V	5.07A	5.07V	6.0mV
3.3V	4.85A	3.30V	5.0mV
−12V	0.1A	−12.19V	16.6mV
5Vsb	1.01A	5.06V	9.8mV
AC Power	178.3W
Efficiency	90.21%
Power Factor	0.91
Intake Temp	30°C
Exhaust Temp	33°C

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Test 3 (202.91W Load)

Rail	Load	Voltage	Ripple
12V	9.33A	12.06V	8.0mV
5V	10.12A	5.06V	5.8mV
3.3V	9.97A	3.29V	5.4mV
−12V	0.1A	−12.21V	21.0mV
5Vsb	1.01A	5.07V	10.2mV
AC Power	219.1W
Efficiency	92.61%
Power Factor	0.94
Intake Temp	31°C
Exhaust Temp	35°C

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Test 4 (257.17W Load)

Rail	Load	Voltage	Ripple
12V	13.84A	12.05V	8.2mV
5V	10.12A	5.06V	5.8mV
3.3V	9.97A	3.29V	5.8mV
−12V	0.1A	−12.24V	28.2mV
5Vsb	1.01A	5.07V	11.2mV
AC Power	277.2W
Efficiency	92.77%
Power Factor	0.94
Intake Temp	32°C
Exhaust Temp	37°C

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Test 5 (309.29W Load)

Rail	Load	Voltage	Ripple
12V	18.2A	12.05V	8.8mV
5V	10.1A	5.05V	5.8mV
3.3V	9.94A	3.28V	5.8mV
−12V	0.1A	−12.27V	34.2mV
5Vsb	1.01A	5.06V	12.2mV
AC Power	333.0W
Efficiency	92.88%
Power Factor	0.94
Intake Temp	33°C
Exhaust Temp	38°C

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Test 6 (364.36W Load)

Rail	Load	Voltage	Ripple
12V	22.77A	12.05V	9.4mV
5V	10.1A	5.05V	6.0mV
3.3V	9.94A	3.28V	5.8mV
−12V	0.1A	−12.28V	42.4mV
5Vsb	1.01A	5.06V	13.0mV
AC Power	392.4W
Efficiency	92.85%
Power Factor	0.96
Intake Temp	33°C
Exhaust Temp	39°C

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Test 7 (393.48W Load)

Rail	Load	Voltage	Ripple
12V	25.17A	12.05V	10.2mV
5V	10.2A	5.05V	6.0mV
3.3V	9.94A	3.28V	6.0mV
−12V	0.1A	−12.28V	40.2mV
5Vsb	1.01A	5.06V	13.0mV
AC Power	423.9W
Efficiency	92.82%
Power Factor	0.95
Intake Temp	35°C
Exhaust Temp	41°C

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Test 8 (449.22W Load)

Rail	Load	Voltage	Ripple
12V	29.83A	12.05V	11.2mV
5V	10.08A	5.04V	6.4mV
3.3V	9.94A	3.28V	6.6mV
−12V	0.1A	−12.3V	35.8mV
5Vsb	1.01A	5.05V	14.4mV
AC Power	485.1W
Efficiency	92.60%
Power Factor	0.95
Intake Temp	35°C
Exhaust Temp	44°C

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Test 9 (503.94W Load)

Rail	Load	Voltage	Ripple
12V	34.4A	12.04V	12.2mV
5V	10.08A	5.04V	6.8mV
3.3V	9.94A	3.28V	6.6mV
−12V	0.1A	−12.31V	42.0mV
5Vsb	1.01A	5.05V	14.6mV
AC Power	546.1W
Efficiency	92.28%
Power Factor	0.97
Intake Temp	35°C
Exhaust Temp	44°C

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Test 10 (562.58W Load)

Rail	Load	Voltage	Ripple
12V	36.68A	12.04V	13.4mV
5V	15.09A	5.03V	7.0mV
3.3V	9.91A	3.27V	7.4mV
−12V	0.2A	−12.11V	58.2mV
5Vsb	2.02A	5.05V	15.0mV
AC Power	608.9W
Efficiency	92.39%
Power Factor	0.97
Intake Temp	34°C
Exhaust Temp	44°C

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Test 11 (613.25W Load)

Rail	Load	Voltage	Ripple
12V	39.08A	12.03V	14.2mV
5V	15.09A	5.03V	8.2mV
3.3V	14.67A	3.26V	7.4mV
−12V	0.3A	−12.03V	48.0mV
5Vsb	3.01A	5.01V	16.8mV
AC Power	663.4W
Efficiency	92.33%
Power Factor	0.98
Intake Temp	35°C
Exhaust Temp	45°C

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Test 12 (666.16W Load)

Rail	Load	Voltage	Ripple
12V	43.44A	12.03V	16.0mV
5V	15.09A	5.03V	8.6mV
3.3V	14.67A	3.26V	8.0mV
−12V	0.4A	−11.98V	46.8mV
5Vsb	3.01A	5.01V	18.2mV
AC Power	723.4W
Efficiency	92.09%
Power Factor	0.96
Intake Temp	35°C
Exhaust Temp	45°C

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Overload (806.64W Load)

Rail	Load	Voltage	Ripple
12V	55.14A	12.02V	20.2mV
5V	15.06A	5.02V	11.0mV
3.3V	14.67A	3.26V	8.8mV
−12V	0.4A	−12.01V	54.6mV
5Vsb	3.01A	5.01V	21.6mV
AC Power	889.2W
Efficiency	90.71%
Power Factor	0.97
Intake Temp	36°C
Exhaust Temp	47°C

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Starting with the 12V rail, we had a starting value of 12.07V in Test 1. It dropped to 12.03V at 100% load. This equates to 0.07V (0.58%) worst-case regulation and a drop of just 0.04V, or 0.33%. The 5V rail started at 5.08V and finished at 5.03V, giving us 0.08V (1.6%) regulation and a 0.05V (1%) drop. The 3.3V rail started at 3.31V and dropped to 3.26V, giving us 0.04V (1.21%) regulation and a 0.05V (1.51%) drop. This is an excellent result on all of the rails.

The efficiency was very high, as we would expect to see from an 80 Plus Gold certified unit on 230V. It stayed above 90% for all but Test 1. The exhaust temperature was initially only 2°C warmer than the ambient temperature, but this rose to 10°C warmer at maximum load. I was able to overload the unit to just over 800W. If I attempted to load it higher, the voltages would nosedive, indicating that the unit was unable to go any further. During this test, the efficiency was still high, and everything was still well and truly in spec on the output side.

Rail	Test 12 (666.16W)	Overload Test (806.64W)
12V
5V
3.3V
−12V
5Vsb

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The ripple was very well suppressed, staying under a quarter of the maximum allowable limits at all times on the three main rails. In fact, the 5V and 3.3V has single-digit ripple figures for all but the overload test. The ripple was a bit higher on the low current rails, especially on the −12V, but it was still well within limits.

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