I am going to rebuild my system about July and am now trying to choose the right CPU. I have been leaning toward the Opteron 165 because I like overclocking, but have recently been told that the NEW 165's are now locked to prevent O/C, any truth to that? I plan on using either a DFI or MSI mobo and have heard that the DFI can unlock the 165??? If not using the Opteron which X2 CPU would be the best, X2 3800???