No bump needed overclocking man! If you try and format while overclocked where you THINK it's stable, but reality is somewhat less forgiving, you will get corrupted files, especially system files and reformatting at those speeds will be FUBAR! How do I know? Been there and done that myself and a much more common problem than you'd ever want to believe. So many people are replacing hard drives only to find out later that is was the overclocking beyond stable all along. I know this sounds odd, but your Cousin Billy's programming will have to encounter hundreds, if not thousands of read/write errors before it will bother with a specific announcement to you that something's porked.
Think of overclocking and read/write errors as trying to communicate with someone who is hard of hearing. If the RAM reads or writes wrong, the system just asks it to do it again. It does this over and over again until it either gets it right, which is usually the case at the point where novice overclockers think they are stable, or it finally logs an error or in severe cases, corrupts a file. If your increase in speeds or tightening of RAM speeds does not give a corresponding increase in performance, this is your first clue that you've gone from the blue and into the black.
This is why I say you have to go by the torture tests run over 8 hours at a time. Any errors at all and you ARE NOT at a stable speeds or timings. Any other interpretation is just interesting information.