One of my old machines i gave to my family has developed a fault with the power supply. It is a OCZ GameXStream 600w Silent SLI Ready ATX2 Power Supply thats about 5 years old. Im looking to replace it but as its only use is the internet i dont want to spend much on a new one. Would it be a straight swap for the OcUK Swift 500W V2 Silent Power Supply (£12) or do i need to spend a bit more money?. Thanks