Hi! My old 24" iMac had an ATI radeon 4850 card, and playing some of my favorite game titles (fallout 3, and Dawn of War) worked fine - atleast in comparison to my old White iMac 24". Now I'm going to purchase a 27" i5 iMac with the Radeon 4850 card. My question is; since it´s the same GPU and playing in native resolution will be a tough job. Will the quality of playing games in 1080p be much lower? I just want to know if this will be a significante downgrade. Or if playing games in 1920x1080 will be a good quality choice. Sorry for the bad english!