The GeForce 7300 GT GPU is clocked at 350MHz and the and the card supports up to 1080i HDTV resolutions.
More specs:
Memory Type 256MB/512MB DDR2 Memory Interface 128-bit Pixels Per Clock 8 Bus Type AGP 8X RAMDAC 400 MHz OutPut VGA + DVI-I + HDTV Out HDTV Resolution up to 1920 X 1080i