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Overclocking Non K Skylake.

post #1 of 9
Thread Starter 
Okay so pretty basic question I've found a lot of conflicting information about...

Is it possible to overclock non-K skylake CPU's via the BLCK, or is that locked down for some reason? BLCK straps or anything, or is it not possible?


I keep finding a lot of yes's and no's to this answer depending on where i search, so I figured I'd just ask here and hopefully get some somewhat concrete answers.

Thanks!
post #2 of 9
Thread Starter 
Bump... no answers?
post #3 of 9
Non K SKUs are completely locked down and can't be overclocked more than about 5 MHz using the BCLK. BCLK straps are also disabled.
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post #4 of 9
I noticed that on my i7 6700 (non-k) on a MSI B150M Mortar it is possible to set the multiplier to x40 and set a fixed voltage. However, I cant make it work outside the BIOS. It is like if it is never registered even though it says so in the BIOS.

Another thing that isn't working is XMP. I can set it to the 2666MHz, but it never actually becomes that speed and stays on 2133MHz.
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post #5 of 9
Mh that's strange. I could change the memory without any issues on my i3 6320. However, BCLK is locked at 102.6 MHz. No strap or anything like that available.
post #6 of 9
The Core i7-6700 (non K) has a 40 multiplier but this is only used when a single core is active.



If you are doing some Prime95 testing and all 4 cores are active, the maximum multiplier is 37.

Locked Core i CPUs from the previous generations needed to have at least the C3 C State enabled in the bios in order to use the maximum 1 core active multiplier.
post #7 of 9
Quote:
If you are doing some Prime95 testing and all 4 cores are active, the maximum multiplier is 37.

I understand that, but why would I be able to set all cores on a locked multiplier of 40 in the BIOS then? It seems like a useless feature if it doesnt work.
Quote:
Locked Core i CPUs from the previous generations needed to have at least the C3 C State enabled in the bios in order to use the maximum 1 core active multiplier.

It could be a noob question, but what do the power stages to do with enabling an x40 multiplier on all cores?
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post #8 of 9
The original design of Intel Turbo Boost was based on inactive cores going into either C3 or C6. This freed up some power and thermal headroom so the active core or cores could use a higher multiplier. This is still a useful feature since many tasks continue to be mostly single threaded. Having C States enabled allows these CPUs to reach their maximum speed when only a single core is active. All of the locked non-K CPUs work this way. If you disable C3 / C6 like most enthusiasts do, on the locked non K processors, you will be prevented from ever using the maximum multiplier.

I have not seen any testing of the locked Skylake CPUs yet. There might be some motherboards with an all cores or multi core option in the bios so you can run all 4 cores at the 40 multiplier.

If anyone has one of these, run CPU-Z, go to the About tab and run a Report. Upload the .TXT file to www.pastebin.com or somewhere convenient. It might show in there what these CPUs are capable of.
post #9 of 9
Thread Starter 
still haven't gotten a 100% answer on this, oddly enough.


How could they lock down BLCK straps anyway? I thought that was a motherboard based thing, not CPU based.
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