I have a 7-year-old Dell Gen 2 XPS tower (Pentium 4, 2.86 GHz, 4 GB RAM). The existing AGP 8X card is ATI Radeon 9800 Pro with 128 MB. This configuration doesn't have quite enough power to play .m4v 720p TV shows from iTunes - much less 1080p video. The display card also fails the Windows 7 upgrade advisor tests.
Is there another AGP 8X card that would play 720p and run Windows 7... or must I start over with a more modern system?