Disable BIOS caching and video BIOS caching to free about 32kB of L2 CPU cache. About 3% pystones gain on an athlon 2500+ (512kB of L2 cache) : 32.5k to 33.4k.

Source :

http://www.rojakpot.com/showFreeBOG.aspx?lang=0&bogno=188

http://www.rojakpot.com/showFreeBOG.aspx?lang=0&bogno=207