I'm going to be exchanging the motherboard in my sig for an ASUS A8V deluxe, all the other components will be the same, obviously it's a different Chipset (going from Nforce3 to the VIA K8T800 Pro) so I'm wondering if I should take the trouble to format the HD and reinstall Windows or just do a repair install, I've read on the net that doing a repair install means you don't then have to reinstall all your apps, but as I'm mainly doing this to improve performance I'd like to know if it could be affected.