Changing GPU - Reinstall?

[Shakey_Jake33]

Basically, building a new PC, and my current machine will be my 'spare' which I'll run alongside my main PC with stuff like chat apps, downloaders, web browser etc open while I actually use my main PC.
Given this, I'm giving my 9800 Pro to my brother and I'm having his FX5500 since he'll need the better GPU more than I will in this spare.

Given the jump from ATi to Nvidia, will a Windows re-install be required for maximum performance, or will a simple uninstall and run of DriverCleaner be sufficient.

Might sound mad, but y'know... paranoid.

 

[Shakey_Jake33]

Good to know, cheers. I alwways reboot to save mode and run Drivercleaner just in case, but that's the paranoid side of me.

Keep hearing all sorts of stories about how they've lost fps by switching from ATi to Nvidia or vise versa, lol.