A proper 600w psu will cost at least £50, you see psu claiming to be 600w for £12, these are not 600w and when put under test did not run near that amount of power.

For the average pc a psu running a real 350w is enough. If you run a lot of hard drives, fans, optical drives and a beefy cpu and graphic card then you will need more. Custom PC magazine done a proper load test on psu last month and it showed some surprises to say the least.

hi-spec system http://www.scan.co.uk/Products/Produ...oductID=179312

lo-spec system http://www.scan.co.uk/Products/Produ...oductID=138556

This is and the like are a waste of money http://www.ebuyer.com/customer/produ...duct_uid=61300