OCC has published a review on the ASUS Rampage III Extreme
A quote from the article:
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Overclocking the Rampage III Extreme was an exciting affair. With the stellar BIOS that ASUS bundled with the board, the process was familiar to every other X58 board on the market, but easier after all of little tweaks and improvements are factored in. I had no difficulty getting my i7-930 chip to 205x20 for a 4.1GHz OC, but had some trouble getting it to a 210 bclock. I then upped the multiplier and lowered the bclock slightly to keep moving up. After a bit of easy voltage tweaking and memory adjustments, I was running 4.2GHz stable on air.
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