Hello, I just purchased a lenovo desktop and it has a tilapia mother board. This has an AM3 socket and I am going to add a HD 6870 in the empty PCI slot. In the future I would like to change the Athlon 2 x2 255 over to a Phenom 2 X4 955 which is also a AM3 socket. Do you think that would work without changing the mother board or messing around with the BIOS?