If I were you, I'd put a little more cooling to the card, and run it up a bit higher. I have a GF2 Ti, and I've only done two ghetto mods. I put a socket 7 fan on top of the tiny fan that is on the stock heatsink. And I made a holder out of hanger wire that holds a 60 mm case fan just above the the top of the card, on the opposite side of the GPU. Ok, three things, I also lapped the cheesy little GPU heatsink. These have allowed me to run it at 294/444, with no ramsinks. Any higher and I get artifacts. I had to bump I/O voltage to 3.5 for the core to avoid lockups. Not a cure all, but I think it would help.