Yeah, the B2's seem to frequently need over 1.45 to go beyond 3.5GHz, with quite a few needing in the 1.5-1.55 range. Whether you want to run up there is ultimately up to you, I suppose. As for why you're earlier high-voltage attempts didn't get you any higher, it's possible that your chip is hitting its wall, but I still have to wonder whether there's another BIOS setting holding you back.
__________________ QX9650 @ 4.038GHz (425x9.5) | Asus Formula Maximus | GTX280 (777/1620/1404) | Mushkin XP2-8000 Redline 2x2GB
Q6600 @ 3.6GHz (400x9) | MSI P35 Platinum | 8800GTS 640MB (700/900) | Mushkin EM2-6400 2x2GB
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