Yeah you are right about your processor. I have no idea why you would have a Pentium 4 processor paired with an 8800 GT, its just MASSIVELY bottlenecking the graphics card. If you are using a "newer" Pentium 4 cpu that uses the LGA 775 socket then you are in luck, you can upgrade your cpu to a newer dual or quad core cpu. If not, then you cannot upgrade your cpu to anything better.