With my mega fast quad core PC running frustratingly slower than I believe it should, we have built another with the aid of a new box and power supply.
This one truly whizzes along just like the other unit should have. It is ultra silent too! And oddly now the old PC has the bare bones, it works really well again too. Obviously some conflict going on with the odds and sods.
The new also glows blue in the dark. oooer.