Hi, I currently have a mythtv FE/BE that is: AMD X2 5200+ CPU 2GB RAM Asus M3N78-VM Motherboard (with Nvidia 8200) I have an ATI HD4870 512MB which I am about to sell. But before I do I thought let me find out whether it would be an improvement in playing 720p/1080p content compared to the nVidia 8200? Thanks Jongi