Verdict: Plenty of power but it's excruciatingly noisy

Like the 460W Akasa, this PSU is manufactured by Enhance. What's more, internally, it's the same as the SilverStone Zeus ST65ZF.

The 650W rating is reached by the following distribution of power: 33A on the 3.3V, 24A on the 5V rail and 13A, 18A, 16A and 8A on the 12V1, 12V2, 12V3 and 12V4 rails respectively.

The PowerPlus is compatible with all motherboards, as it has both 20- and 24-pin ATX connectors, plus an 8-pin EPS12V connector. It can also support two PCI-E graphics cards, although it isn't Nvidia SLI certified. However, as it's exactly the same PSU as the aforementioned SilverStone, which is certified, we reckon it should be okay.

Not surprisingly, the PowerPlus proved to be just as good a performer as the SilverStone, outputting a stable voltage on all six primary rails, regardless of what load we demanded from it. It was equally efficient, averaging 75 per cent at full load. However, it suffers from the same Achilles heel as the SilverStone in that it's extremely noisy.

Although the PowerPlus is perfectly stable and capable of outputting a massive amount of power, it's simply too noisy. Unless you really don't care about PC noise, then it's worth looking elsewhere.

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