I'm about to reinstall my copy of Windows 7.
The DVD comes with 32bit and 64bit versions.
I originally installed the 32bit version and have activated it.
What I can't seem to find out from anywhere is whether I can reinstall it but use the 64bit version and will the activation still be valid? Or do I have to buy a whole new copy of Windows 7?
Also I think there are 64bit drivers for all the devices I'm using, but are there any major applications that have problems in 64bit?
Finally, is the difference between 32 and 64bit that noticable in day to day use? (Assuming I upgrade my RAM to say 8gb - currently 4gb).