you still dont got it right perkam
4ghz is pretty much normal, i havent seen a chip that cant run 4g on air, even old c0 chips4.5 on water seems to be normal as well jcool, i havent seen anybody reaching less than that on water, some even reach it on good air, the newer c0 and the d0 chips need less voltages for it however.
starting at 4.6 there seems to be some weird barrier
that many chips cant surpass stably even with ln2 and huge vcore, must be some transistor limitation or a fundamental design limitation...
worse or the same is more likely, intel has been binning press samples very very well for the past years
pcrinimal, yes, there is something very weird about cpu multipliers, especially with intel cpus... just ask KP and hipro5 about their 780ES chips... the diferences between the multipliers were insane, some clocked ridiculously low compared to others. im pretty sure it has something to do with internal timings and interface buffers that dont work well with certain multipliers. in the end, multipliers are pretty similar to memory dividers, and we all know what vast diferences memory dividers on chipsets had. multipliers seem to be a lot less weird in that regard but it still happens... i dont know if intel can adjust some timings or settings to improve this, but i think they can... but they obviously spend most if not all their time tweaking everything for the stock multipliers, and not higher multipliers...





4.5 on water seems to be normal as well jcool, i havent seen anybody reaching less than that on water, some even reach it on good air, the newer c0 and the d0 chips need less voltages for it however.
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