For What its worth my PC4800 elite plat will do 307 2.5-3-3-6 (didnt try tras 5). But only in memtest as my cpu cant even handle 300mhz... After 307 though it wont even boot despie timmings. So im gonna take a wild guess and say propose that it can do atleast 310.. maybe 315 if im lucky. just need a good mem controller.
