I think your probs are similar to mine, just a bit worse..
I blame it on the imc.
could you boot 278 x 11,5 @ ddr667 divider?, so that mem is at around 800?
maybe your cpu is not the best one if prime errors at 3,1ghz @ 1,4v.. is it g1 stepping? no one would guarantee getting over 3ghz stable with such cpu, its not seldom that these chips dont go that well..
someone from forumdeluxx is testing on a gigabyte and is getting results that seem to indicate weak imc's as well..
btw: could you please post your everest mem speeds? I get >10000 @ ddr1066, but with half multipliers its only around 5000-6000 at comparable speeds and timings..
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