Tweakers Australia has posted a review on the Just Cooler SP-300 silent 300 watt power supply.

As I was saying before, there can be many problems with having a cheaper PSU. For example, a cheaper power supply has the ability to die on you, and unfortunately sometimes it’s not just the power supply that will fail to respond anymore, but the motherboard also. Voltage sag is another common problem that is going to happen more in cheaper power supplies relating to their poor quality components and design. There are three primary outputs when it comes to the modern power supply, and the only outputs that are required to supply a decent amount of current are the 12Volt, 5Volt and 3.3Volt lines. Overloading one of these will cause the voltage to sag or regularly vary, resulting in decreased stability at the risk of frying some hardware.

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