Are you trying to OC w/ 4 sticks or 4 GHz 92x 2gb)? This is simply the old back. Take two out and see what happens.
My E6750 runs @ 3,6Ghz with 450x8 or 515x7(don`t get it above) and I only have one kit, 2x2GB but it`s not that easy to get them above ~1100Mhz, I can`t.
Perhaps I will try out rampage bios sometime/anytime and test ram again.
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