New Bioses can only increase the Processor Speed Capacity of the motherboard. For example, my motherboard had a maximum of 800Mhz Intel processor. Thats because it was designed when 800Mhz was the fastest. With a bios update I was able to install a 1Ghz processor. In a sense, updating your bios might allow your computer to go faster, but only if you install a new processor too.