WinXP reporting incorrect video RAM

[Guest]

My video card (GeForce 7300GS 256MB RAM PCI-e) is reported by WinXP Home SP2
as having 512MB of video RAM. I've updated drivers/rolled back drivers and
graphics intensive programs often crash to POST or to desktop. One
application (Age of Empires III) did give me a hint in an error message after
crash to desktop - video RAM = 0 - which didn't seem reasonable. Sys = AMD
64 X2 5600, 2GB RAM

I do build my systems and this is first time I've had this problem. Could
it be chipset drivers?

Thanks

 

[Bob I]

TurboCache perhaps?
http://www.nvidia.com/page/turbocache.html