Hey guys. I've got a June 2004 dual 1.8GHz Power Mac G5 here. I've had it several months and it came with the 128MB Radeon 9600 XT graphics card. I like to do a bit of gaming (on a PPC Mac, ha), and this card doesn't really cut it - struggles to play games like Doom 3 and Quake 4 on any settings, even UT2004 it struggles with. Now, I've found a 256MB Geforce 6800 Ultra on sale for about $135 (used) which looks like a decent price, especially given I intend on this Power Mac being my primary computer for the foreseeable future. Problem is, I get the feeling (from online reports and my own testing) that a lot of games like UT2004 and Quake 4 are very CPU-bound, and if I'm not going to see a good performance boost I don't want to waste my money. Barefeats seems to have a lot of benchmarks, but they don't seem to have any high-end GPUs in the lower clocked G5 Macs. Any help would be appreciated!