I have a quad-core desktop computer with 6GBs of RAM, with windows Vista home premium (64 bit) it say's in windows task manager, in desktop, with no other programs running. That just the operating system itself and various other background tasks like virus scan, etc.. Takes up 15% of my processor usage, and over 1GB of RAM. That is quite a bit for an OS. The windows XP on my laptop uses less than 512 MB in most cases. Is windows 7 going to take up more system resources than Vista? Would that effect performance while playing computationally demanding video games if I were to upgrade my version of windows?