I had this mobo with an i5 750 and oc genie didn't impress me. Overvolted and not much of an oc in my case. Not sure what it does to check what your max oc is but I manually OCed far higher and with turbo boost on (which it disables).
I wouldn't think about doing that. You bought a COMPLETELY UNLOCKED I7, you should put it to the test and overclock by yourself. Because as RJR and Wolfram23 problems can occur, and also you'd be getting a better overclock by yourself. OH and by your choice of CPU you should get a good-high end cpu cooler to cool it. The V8 I have is barely keeping the 955 at 3.7 or 4.0 cool. It is but on 100% fan. Use a Venomous X from Thermalright, that thing is a beast. Benchmarks prove so.
I just bought the i7 875k yesterday from Micro Center, upgrading my i5 750. I also have a MSI P55-GD65 board. I use the information from Tom's Hardware "Overclocked On Air: Intel's Core i5-750" to setup the 750, will that same info work for the 875k as well? Oh, and stay away from that OC Genie chiefsfan27129, it overvolts your system really bad!