I have an AsRock P4V88 mobo with an AGP slot for video. It's a P4 system that I'm trying to squeeze every last bit out of before I send it to my boys' room. Currently I have a 7600 GS 256 MB card in there, and want to replace it with a card I saw on newegg, the Sapphire 100228L Radeon HD 3850 512MB 256-bit GDDR3 AGP 4X/8X. I'm in the process of switching out my 512 MB x 2 PC2700 memory to 1 GB x 2 PC3200 memory. Between the memory and buying this video card (if I do), I'm talking about $150 to do what may be the last upgrade ever on this machine. The owner's manual for the mobo doesn't help me much except recommending I don't use a 3.3 V powered AGP card in the slot, otherwise my mobo might explode on me. Sooooooo......any thoughts on this particular purchase? I'd like some feedback from the uber computer dudes on the board.