I have one in a Plan 9 terminal, driving a Dell 2407WFP at 1920x1200x16. pci -v reports:
1.0.0: vid 03.00.00 10de/00c3 11 0:dc000000 16777216 1:c000000c 268435456 2:00000000 16 3:dd000004 16777216 4:00000000 16 NVIDIA The label on the box says "GF 6800 XTreme 256MB DDR3 DUAL DVI TV PCI-E". It seems fine, though I'm not watching movies on it.