I am looking to buy a new GPU, and I'm a bit limited on money. I need help deciding which card to get. I mainly play call of duty 4 and 5 right now and its on the lowest settings, with no AA. And i get around 30 FPS average. My friend has the XFX 4850 1GB, and he plays on high and it looks amazing. I have a 17" monitor. So I am just wondering will the difference in 512MB and 1Gb make an impact on the graphics. Its only a 10 dollar diffence but, I am very limited on money. Also what does the ram mean in GPU's. Any suggestions will be great, thanks.