I don't know of any Turbo settings on a KG7, other than within the VIA drivers. This has nothing to do with the speed of your CPU.
Please explain further, what you mean.
Unless you have the latest BIOS update, it is unlikely you will be able to setup your CPU properly. Please post the version and date of the BIOS you have, and now the bad news.
To the best of my knowledge, the KG7-Raid only supports up to a 2100+ Thoroughbred or a 2000+ Palomino core processor. Therefore, you are lucky it's running at all, but you can never realize it's full potential with that motherboard.