I currently have a BFG 9800GT. Unfortunately I've had to reflow it 3 times in the last year due to overheating. Dont have much to spend so have 2 options, buy an Accelero Twin Turbo fan or a cheap card. Just wondering how does a GT 520 compare with a 9800GT?? Cos it's either £18 on the fan, or £30 on the card. Guessing the 520 isnt as good, but anyone know by how much?