I have an EVGA GF4 Ti-4200 64mb car, I was told I can use the latest Nvidia drivers (41.09) to increase clock speed on my video card, however when I check the advanced button under settings and click on nvidia at the top I am unable to see any clock speed management option on the small menu that appears on the left. I was told that there is a registry value I have to change but am unaware of which key I must go to and where to find it. I have WINXP PRO and am currently not worried about cooling since the video card has a sweet custom fan with heat sink,