I have the same PC, but with XP. How many processes do you have running?
At this exact moment, with nothing but Firefox open, 81... all of which do absolutely nothing... I think. The only ones actually using CPU are dwm.exe, firefox.exe, and task manager.
Want me to delete some?
<<Edit>> I deleted all the ones I thought I didn't need... luckily I dont think I messed anything up... The ones I have left are csrss.exe, dwm.exe,explorer.exe(which I learned the hard way never to delete),firefox.exe, rundll32.exe, schtasks.exe, taskeng.exe, taskmgr.exe, winlogon.exe
Those are the ones that are showing, but I still have 58 processes up... with only 9 visible.
Still no noticeable difference.