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RSS FeedsUltra LSX 750W Power Supply Review
paulktreg - December 1, 2010» Discuss this article (1)
Testing:
Temperature, Noise Levels and Fan Speeds:
I am not going to give a pass or fail in this section, as the ATX12V V2.2 does not really have any references on which to base a decision.
Temperatures are purely for information only, as there are too many variables involved when installed in a case, which, by the way, it wasn't. Ambient temperature, processor cooling efficiency and case cooling fans all play their part on the temperature of the air entering the power supply, and consequently the temperature of the air leaving it. No valid conclusions can be made from this test.
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Ultra LSX 750W (U12-40874) Temperature & Fan Speeds
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Supply = 110VAC/230VAC
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DC Loading(W)
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Temp In (°C)
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Temp Out (°C)
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Δ Temp (°C)
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Fan Speed (RPM)
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0
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N/A
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N/A
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N/A
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848/848
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146/146
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21.9/21.8
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25.1/25.4
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3.2/3.6
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854/859
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399/398
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22.4/22.3
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31.7/32.6
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9.3/10.3
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1235/1159
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760/758
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22.8/22.7
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29.9/29.8
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7.1/7.1
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1808/1847
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The Ultra LSX 750W power supply runs cool at all times and quiet up to 50% loading, but the fan noise does become noticeable when it hits 1800 RPM at full load. However, this isn't a complaint, as it's the norm on most power supplies, and who would install a 750W power supply with the intention of running it at or near full load? The ideal power supply loading has to be 50%, for which you'll enjoy maximum efficiency, lower utility bills, and low fan noise. Like many other power supplies, the Ultra LSX 750W fits the bill.
