It is however think about how much work it will be (if even possible!) to fix/restore corrupted JPG pictures, documents, etc. that could be damaged due to cpu errata. Back in 2008 I had a so called stable system that never crashed that was used to edit videos in Avid. Only until later did I find out there were strange pixels randomly and glitches in some of the audio channels at random. It was caused by overclocking and no stability checker revealed it. Encoding the videos would, however. Fortunately this wasn't critical and I caught it before too many videos were produced.
It's always nice to find out the max o/c at safe vcore and work from there. Prime95 is definitely not what I would use though. I've had I7 systems that could prime for a week that would produce an error in LinX in minutes. That's just one example.