Build off of this computer. I suggest customizing it with a better video card, maybe the nVidia 9800 GTX, a better power supply, maybe the 650 watt, and a better cooling system. If you choose to get 4 GB of RAM, you MUST get Vista 64 bit. The 32 bit can only use up to 3 GB, I think. I know for sure it won't use 4 GB of RAM though. I got my PC from these guys, definitely cheaper. Unless, you get those DELL PCs with a free monitor.