I'm currently using a pc that has a 5400 rpm hard drive. However I also have a 1tb 7200rpm hard drive just sitting in my closet. So basically my question is can I run two hard drives at different speeds?
Also I'm planning to run my games off of the second hard drive (the 7200rpm hard drive). Would there be a performance hit if I booted my OS from the slower hdd and my games on the faster one? Or is it better to have it both on the faster one? ( im trying to avoid reinstalling my OS.
Yes you can use both at different speeds, they are independent of one another. It's fine which ever setup you choose to have the os and game on. The game will load faster on the faster hdd. You could just clone the 5400rpm hdd onto the faster one so you don't have to reinstall.