Administrator DKT27 Posted December 21, 2015 Administrator Share Posted December 21, 2015 One of the big stories of this week in the hardware world, was that thanks to a quick BIOS update, ASRock users could overclock non-K series Skylake CPUs for the first time. Unsurprisingly, other motherboard manufacturers weren’t far behind and MSI has now released updates for all of its Z-170 mobos to make them capable of applying clock speed boosts to all Skylake CPUs. As with ASRock’s BIOS tweaks, this one does only unlock CPU BCLK overclocking, so don’t expect to be adjusting multipliers. It is also limited to those using add-in graphics cards and the Turbo Boost feature will be disabled in the new BIOS. Announced on the HWBot forums, MSI gave users a list of supported motherboards and provided a link to a list of BIOS update files which can be downloaded easily and freely. Pretty much every Z-170 motherboard from MSI is supported, so if you have one of them and a non-K Skylake CPU and would like a few extra MHz without much trouble, this might be worth your time. Just consider that your cooling will be pushed and you will reduce the life of your CPU depending on how much you push it. MSI provided its own disclaimer on the matter, stating: “Overclocking Intel non-K CPUs is not officially supported by Intel and the BIOS versions created by MSI unlocking this option are all beta versions. Intel may choose to disable this option at any time. At no point MSI can be taken responsible for disabling overclocking for non-K CPUs.” View: Original Article Link to comment Share on other sites More sharing options...
Sylence Posted December 22, 2015 Share Posted December 22, 2015 Hasewell CPUs have their BCLK unblocked too by default for both K and non-K CPUs but for non-K CPUs, Skylake or Hasewell, it doesn't make any difference, increasing BCLK makes system so unstable because other system hardwares are related to BCLK frequency too, like HDD and it can cause data corruption. Link to comment Share on other sites More sharing options...
Administrator DKT27 Posted December 23, 2015 Author Administrator Share Posted December 23, 2015 On 22/12/2015 at 5:19 PM, saeed_dc said: Hasewell CPUs have their BCLK unblocked too by default for both K and non-K CPUs but for non-K CPUs, Skylake or Hasewell, it doesn't make any difference, increasing BCLK makes system so unstable because other system hardwares are related to BCLK frequency too, like HDD and it can cause data corruption. Was not aware about HDDs being linked with the BCLK frequency, can you provide more info on it. Link to comment Share on other sites More sharing options...
Sylence Posted December 23, 2015 Share Posted December 23, 2015 12 minutes ago, DKT27 said: Was not aware about HDDs being linked with the BCLK frequency, can you provide more info on it. Sure, I've had a non-k CPU and I know the struggle. it's also linked to PCI-E clock, and RAM of course. Here: http://www.anandtech.com/show/9848/bclk-overclocking-intels-non-k-skylake-processors-coming-soon where it says: Quote For the last few generations Intel has locked down its processors in terms of the CPU multiplier such that only a handful of parts allow a full range of overclocking. CPU frequency is determined by its base frequency (or base clock, typically 100 MHz) and multiplier (20x, 32x, 40x and all in-between depending on the part). The base clock has always been ‘open’, however in Sandy Bridge, Ivy Bridge and Haswell it has been linked to other parts of the system, such as the storage or the PCIe, meaning that any overclocking beyond 103-105 MHz led to other issues such as signal degradation or data loss. The Skylake platform changes this – as we noted back in our initial Skylake launch details, the chipset and PCIe now have their own clock domains, meaning that the base frequency only affects the CPU (core, uncore, cache), integrated graphics and DRAM. http://www.tomshardware.com/forum/283798-29-bclk-ratio Link to comment Share on other sites More sharing options...
Administrator DKT27 Posted December 23, 2015 Author Administrator Share Posted December 23, 2015 I see. I was not aware. I think we should wait for more info then. If it was not delinked or decoupled in the non-K processors then the motherboard companies would have not considered it. Link to comment Share on other sites More sharing options...
Sylence Posted December 23, 2015 Share Posted December 23, 2015 3 minutes ago, DKT27 said: I see. I was not aware. I think we should wait for more info then. If it was not delinked or decoupled in the non-K processors then the motherboard companies would have not considered it. Yes that's right, though Intel doesn't support this type of overclocking. I was reading comments in MSI forum http://overclocking.guide/msi-z170-non-k-overclocking-guide/ and some people had problems with changing their BCLK. someone even had an i7 6700 and I don't know why he didn't buy an unlocked CPU in the first place when he's so eager to overclock his CPU, a few more $$ isn't really worth the struggle, is it? Link to comment Share on other sites More sharing options...
Administrator DKT27 Posted December 23, 2015 Author Administrator Share Posted December 23, 2015 14 minutes ago, saeed_dc said: Yes that's right, though Intel doesn't support this type of overclocking. I was reading comments in MSI forum http://overclocking.guide/msi-z170-non-k-overclocking-guide/ and some people had problems with changing their BCLK. someone even had an i7 6700 and I don't know why he didn't buy an unlocked CPU in the first place when he's so eager to overclock his CPU, a few more $$ isn't really worth the struggle, is it? I see. Lots of disadvantages though, but I'm not the one who overclocks so. About the comments, indeed you are correct. But it seems that there might be some bug that MSI needs to fix as per the comments on that page. Link to comment Share on other sites More sharing options...
Sylence Posted December 23, 2015 Share Posted December 23, 2015 Just now, DKT27 said: I see. Lots of disadvantages though, but I'm not the one who overclocks so. About the comments, indeed you are correct. But it seems that there might be some bug that MSI needs to fix as per the comments on that page. Well if you work with servers or 24/7 systems that are mission-critical then you're right about leaving their clocks at defaults to guarantee their stability, but for home or personal use it's really great when you're able to unleash the real power of your hardware that you paid for. specially graphic cards and K-series CPUs. Link to comment Share on other sites More sharing options...
vibranium Posted December 23, 2015 Share Posted December 23, 2015 FYI, even BCLK variations of less than 1% have been associated with instabilities. I wouldn't do it unless it has been tested by many early adopters. Link to comment Share on other sites More sharing options...
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