Mieklol

Recently bought a computer off a mate, and decided to do a clean install of it. He included the original motherboard drivers disc. I loaded XP onto it, all fine. Then I installed the drivers one by one, restarting after each. After this it was PAINFULLY slow. So I did a clean install omiting the SATA/RAID drivers, still painfully slow. Another clean install and I omit the chipset drivers...all is fine. Not entirely sure on the model, the disc says Gigabyte 965/946. Should I just leave the chipset drivers out, or are they essential?