You may need to retest your MSI 875p NEO, Evan.
Posted by KCComp at Hardforms -
"The MSI overclocking problem is NOT specific to 533 FSB CPUs. As I noted in my original post, I'm using an 800 FSB.
The board just ignores the overclock settings in the BIOS, it has nothing to do with which FSB CPU you use."
". . . Rather than FAILING overclocking, it won't allow you to do it at all! It has the options in the BIOS, but it only pretends to honor them. I can set overclocks of 5 GHz, I should post screenshots of that
I checked the MSI forums and other folks are having the same issue. Once you get into Windows and run Sandra or CPU-Z, it's clear that you haven't overclocked at all.
The board came with BIOS 1.1. I tried upgrading to 1.2, but it erased the Promise RAID BIOS! MSI forgot to distinguish their BIOS updates between the 6758-010 and 6758-020 versions of the board (LSR and FIS2R). Idiots. Even flashing to the old version didn't bring back the Promise BIOS.
I found out from the MSI forums that BIOS 1.0 allows overclocking, so I flashed back to that, and lo and behold, now it overclocks. HOWEVER, this BIOS rev does NOT have the Intel microcode fix to the 800 FSB CPU problem, and I'm running an 800 FSB CPU. So, I can't put this board into my production machine, and all testing results are pretty much null and void (the microcode fix reduces speed )."