I don't seem to be able to reach anything higher than 657 MHz, tried single channel, dual channel, CAS4, CAS5, Cellshock PC8000 and Crucial PC8500 (the only stick left) without any luck.
650 MHz is ok for boot and short benchmarks, 655 MHz is a no go, windows crash, 660 MHz always results in post error core 52; from my experience usually it is something memory related (incorrect GTL, incorrect CPU or PCI-E clock skew, not enough VDIMM/Drive Strength) but this time I can't find the right settings for the life of me.
I am inclined to think the RAM themselves are not the problem anyway, using memory divider 5:6 they can boot easily at 665 MHz 4-4-4-4 super tight subs and run 1M (it's 3 am, there is no time for more exaustive testing
)
In windows using setfsb I can run up to 657 MHz of FSB, no one MHz more (I already did it 3 years ago with another CPU):
http://hwbot.org/submission/2177382_...eme_657.46_mhz
I clearly am missing something but I don't know what it is.
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