WFT, BCLK working stable up to 127MHz just via BIOS update/tweak!? I thought OC via raising BCLK was dead after LGA1366/1156 era. Someone (read: CPU and mobo manufacturers) were obviously hiding something from us OC'ers for all these years, since LGA1155 release, to gain some extra profit on K CPU's and "real OC capable chipsets/mobos (OC via multiplier)" like P68/Z68/Z77... and later :realmad:

@ spajdrik & Twiddles I know on Skylake's BCLK and PCIe are not tied same way like on previous generations of CPU's past LGA1366/1156 and up to Skylake. I just didn't expressed myself in right way on my previous post: I was suspecting that BCLK OC on previous CPU generations was somehow limited for puprose and that "BLCK-PCIe tied excuse" was just excuse to enable some extra profit both for: a) Intel selling K CPU's and chipsets capable for multiplier change b) mobo manufacturers selling more expencive mobos with chipsets capable for OC ...to us OC entusiasts willing to spend more money on OC capable HW. Just remember not so long ago Non-Z OC affair about H87 and B85 chipsets who were by Intel specs "uncapable for multiplier change" and suddenly bam!, just via BIOS update some H87 and B85 mobos were capable for OC paired with K CPU's. Just wondering how many OC features CPU/chipset and mobo manufacturers are hiding from our eyes i.e. we are now aware about just to force us entusiast to burn more money into OC capable hardware :3eyes: Oh God, how I miss that time whan we were happy like pig in a mud while OC'ing our cheap ass Celeron 300A to 450MHz and more matching performance of much more expencive PII 450MHz... Now... where the hell is my thinfoil hat.... 😀

Crazy_Milojko : it's because BLCK is separate now from PCIE clock for example. Some preliminary tests here http://overclocking.guide/overclocking-non-k-intel-skylake-cpus-performance-tests/

This shows how much Intel holds out on us just to upcharge K series.

K Models are not only unlocked multi but they are meant to be cherry picked or binned higher up than non K models. Intel doesn't just stick a K on the end of a named chip and sell it for a premium. K chips are binned on 3 strict tests. Heat CPU/Cores. Power Usage/draw and Overclocking potential while also looking at the first two. It's such a broad brush stroke that say an i7 6700K alone can have a large range within that one chip. Some poor fracker will get low end i7 6700K's while the lucky one will get an overclocking beast. This is why some companies in the UK will stress test/OC all their CPU's and sell them @ a premium if they are good overclockers. This then guarantees you get a chip which hits a certain level of overclock like 5Ghz. This then removes that "Lucky Dip" process we all here hate and go through while buying these high end CPUs. The extra premium is then justified and is only about £10 more which i think is well worth it.

K Models are not only unlocked multi but they are meant to be cherry picked or binned higher up than non K models. Intel doesn't just stick a K on the end of a named chip and sell it for a premium. K chips are binned on 3 strict tests. Heat CPU/Cores. Power Usage/draw and Overclocking potential while also looking at the first two.

Intel want to push new Skylake(Skynet?) sells up so they approve to make non-K version to be OC. Everything is a bussiness,everything is a lie.

They're not "cherry picked" to be better, they go through basic testing to make sure they meet minimum requirements. That testing you mentioned is as basic as it gets, they don't go through anything meticulous to pick out better chips to be labeled as K. Yes they do just stick a K on the name and sell it for a premium. I'll tell you what cherry picked is, the samples they sent to reviewers which all magically reached 4.7-5GHz on air (particularly Haswell) with absolutely no trouble while many of the "same" chips sold couldn't reach 4.2GHz and almost none reach over 4.4GHz without insane voltage. For mine to hold at 4.5 I use more voltage than any of those review samples used for 4.8 to 5GHz. Most people I know can't reach more than 4.2GHz on 4770Ks.