I would like to upgrade my computer a little bit, but I do not know what graphics card to buy. I am currently using ATI Radeon Xpress 1150, which is a quite bad and old graphics card. Therefore I would like to buy a new graphics card. The problem is that my processor is not good as well (AMD Athlon 64 X2 Dual Core 4600+), so I do not want to buy an expensive graphics card to waste my money. I would like to ask you which would be the most ideal graphics card for my processor.