I have to agree with not needing to overclock the CPU. I just did it because I wanted to. I didn't feel or notice any difference after overclocking.
I found the full-on Custom Blend test (that is, not adjusting the FFT size fields) worked very well for me to find that I needed to increase my VCCIO for DDR3 1866 - which is my stock speed. My VCCIO needed to be at 1.15625V. lol This is evidence that the memory controller in my 2500K isn't one of the better ones.
I've always like LinX to stress test. Prime 95 takes so long! About overclocking I really can't as my dual boot hackintosh is set to run at stock cpu clocks. I suppose I could but it would take some work to get the hackintosh working right at an overclock...
Whos Theodent BTW?