This is what I've posted a while ago on the ivy stable club topic:
Hey, here is the formula for the lineair weighted equation. Weighting based on testing time, with the weight of indepentent results being time/avg testing time (16.3hr at moment of writing)
(Frequency in MHz)
Based Weighted Least Squares using Macrobundle, http://www.bowdoin.edu/~rdelevie/excellaneous/#downloads
, the WSL1 macro.
Coeff: -17,50661206 0,281534063
StDev: 167,3160494 0,03659375
CM: 27994,66038 -6,118960445
More info on weighted results and the macro's can be fount in this excel document:
Please just use this as reference and estimates...
Also this equation is linear, and I doubt the voltages actually square linear. So I'll repeat myself and just take these numbers as guidelines or reference to rate your CPU.
Unweighted plot and trendline:
Post in some other topic 6 months ago:
Just recently got my 3570 and got it stable at 4.220 (42x100.5 bclk) and fixed 1.1vcore, LLC has been set so it stays at around 1.105 vcore under load. It's 16hr prime stable max temps of around 70-75°c on stock cooler.
Going to tweak bios settings it a little to get it stable at 4.3 with the same voltage.
Planning on getting a new aircooler and then just bump the voltage a little more, and see how far I can take it. Trying to keep it under 70°C load though.