I have a 566MHz celeron processor that I want to upgrade but I dont know how much does my motherboard handle. I have a cognac-f motheboard. I have recently read on a website that it can only handle up to 800MHz. I dont know if this is true or not but can you guys tell me. My comp now also has a new nVidia 64MB GeForce MX4000 video card, 384MB RAM, and a NIC Card for my dsl connection. Can you guys tell me what I could do to make it faster?