Pop into the thread in the graphics forum for lots of discussion on it.
I upgraded from a 9800XT to the 7800GT and I have no regrets. My 3D mark scores doubled instantly and are comparable with many newer systems (i.e. the CPU isn't that much of a bottleneck). More importantly I can play new games at decent settings. Oblivion looks fantastic, and I can play Tomb Raider Legend with Next Gen turned on. It also has two DVI ports for dual monitor goodness
. There was a lot of debate on spending the same about of cash on a socket 478 board and PCIE card, or event go as far as replacing the CPU as well for the same price, however the IC7G is such a fantastic board.
3D mark scores are:
01: 20725
03: 14691
05: 6373
06: 3352