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Data Collection And Live Upload

Stress Test: Power Supplies Under Full Load
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All data is collected by data server PC

Takes over the management of electronic loads, live cameras and audio recording : Powerful computer systems

This computer transmits the video data and measurement data live via FTP upload to the THG website. Prices And General Overview Of Tested Products

Since the first power supply test three years ago - Inadequate and Deceptive Product Labeling : Comparison of 21 Power Supplies - many things have changed. The power supplies have become more colorful and more complicated, equipped with many functions such as displays and standby outputs. Power supplies are still high-profit items, because they are relatively inexpensive to manufacture and sell for high prices. Previous tests have shown that the efficiency under partial load for power supplies fluctuates between 55 and 75 percent - depending on the model and on the power class.

The power range here extends from 300 watts up to an amazing 850 watts, and the corresponding price range is from about $95 to $500. Both voltage transformers that are actively cooled (using fans) and passively cooled (without fans) will be used.

Originally we planned to bring two more power supplies on board as re-test, but to date, manufacturers Cooler Master and Hiper have not sent their replacement samples. We offered them to test them offline - just in case the devices in question arrive.

Manufacturer & Model Test Passed Power Rating Price Noise Level Warranty Efficiency
AcBel ATX-550CA-AB8FM no 550 watts $140 61.1 dB(A) 10 years 76.8%
Antec Phantom yes 500 watts $190 54.0 dB(A) 3 years 83.4%
Antec True Power 2.0 550 watts yes 550 watts $120 60.0 dB(A) 3 years 73.8%
Aopen Prima Power 700 yes 700 watts $200 62.0 dB(A) 3 years 84.0%
Be Quiet BQT B5-520W S1.3 no 520 watts $130 - 3 years -
Cooler Master Real Power no 550 watts $130 - 2 years -
Enermax Coolergiant EG485AX-VHB (W) yes 480 watts $120 61.8 dB(A) 3 years 77.2%
Enermax Noisetaker EG701AX-VE(W) yes 600 watts $150 58.6 dB(A) 3 years 80.2%
Epower Silent Engine Xscale 470 yes 470 watts $100 65.0 dB(A) 2 years 75.5%
Fortron FSP300-60GNF yes 300 watts $95 0.0 dB(A) 3 years 83.5%
HEC AcePower ACE580UB no 580 watts $140 - 2 years -
Hiper Type R580 no 580 watts $130 - 2 years -
Jeantech Arctic JN120F-600AP12V2 yes 600 watts $190 60.0 dB(A) 2 years 80.0%
OCZ Powerstream 600 no 600 watts $200 - 3 years -
PC Power & Cooling Turbo-Cool 510 yes 510 watts $200 72.0 dB(A) 5 years 78.0%
PC Power & Cooling Turbo-Cool 850 SSI yes 850 watts $500 68.3 dB(A) 5 years 80.4%
Seasonic S12 yes 600 watts $140 59.0 dB(A) 3 years 83.4%
Silverstone ST65ZF yes 650 watts $150 68.0 dB(A) 3 years 75.4%
Spire SP-500W yes 500 watts $115 64.1 dB(A) 2 years 81.0%
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