I run the V7700 on a A7V and its flawless. The A7V BIOS 1007 has made my system bulletproof. It never ever crashes anymore. I also use a good 300 watt PSU which helps make T-birds more stable. Dropping the CUV4X to AGP 2x mode may help alot while only affecting performance minimally.

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Cam

My rig is...

AMD Athlon 1000
ASUS A7V
ANTEC 300 watt PSU
Western Digital 40 GIG ATA 100
256 Megs PC 133 @ CAS2
SB Live! Value
ASUS V7700 Geforce 2 GTS 32 Meg
Dell 19" Trinitron Monitor

Sure beats the old k6-2