I'm running an MSI P67A-GD65 (B3) but i'm at 4.635Ghz (45x103) with my voltage at manual 1.35V. With max temps at 70-75. According to CoreTemp. I'm running the CM 212+ with Arctic Cooling MX-4 as my Thermal paste. I'm using my old Xigmatek HDT-1283 fan instead of the Stock Coolermaster 212+ fan for acoustic reasons. If it's available on your motherboard, manually set your voltage to 1.35 and manually set your CPUIO voltage to 1.005 and see if that can lower your temps while still keeping you stable.
I'm pretty sure you have more headroom than that. I had to clock all the way up to 4.8 @ 1.4V to get max temps above 80.
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