AMD socket 754 chipset with integrated S3 UniChrome Pro. Zaatharen's chip: VIA K8M800VIA K8M800 Biostar K8M800-M7ABiostar K8M800-M7A MSI K8MM-VMSI K8MM-V Vlask's chip: From Gigabyte K8VM800M. VIA K8M800VIA K8M800