I'm looking to build a new PC. Right now I have a Dell xps 8100 and it hasn't given me any problems yet. Starting with a processor I would like something that can handle a lot of programs open at once and is a bit faster, not for gaming. I don't really want to spend the money on new i7. (I don't want a Dell this time). Could someone tell me if a new i5 (undecided which), would be a significant improvement over my old i7? And which i5 if you know. If you need more info pls let me know. Thanks