If you are unable to get good overclocks with SATA (typical problem is "losing" the HDD) then either use a PCI SATA card or use an EIDE HDD. I had that problem with my MSI PT880 motherboard. If FSB is set to "official" increments of 400/533/800MHz, SATA worked. If FSB deviated by 1MHz, SATA sometimes not detected but sometimes detected. If FSB deviated by >1MHz, SATA never detected.