How is Alder Lake Non-K Overclocking Even Possible?! | SB#37

To the untrained eye, it may seem that there's nothing special about the unlocked parts. But once you know the tremendous value created through the efforts of expanding the OC Mailbox, you start to appreciate the work Intel's OC Lab team is doing to enable overclocking.

Aaccess rules to the OC Mailbox can be enabled and disabled by Intel how they wish. So, they could allow parts of the OC Mailbox to work only on specific SKUs or disable access altogether.

An important note is that when enabling non-K overclocking for Alder Lake CPUs, the OC Mailbox status and access do not change. That means non-K Alder Lake processors have no access to the tools provided via the OC Mailbox.

So, with all these restrictions in place, how on earth is it possible that Alder Lake non-K overclocking works?

00:00 Intro
00:18 Nehalem Power Control Unit
01:10 Intel OC Workgroup & OC Lab
04:20 Haswell OC Mailbox
05:52 Skylake BCLK Governor
09:32 Alder Lake Non-K Overclocking

[christopherjackson]

Brilliant video. Absolutely brilliant.

[shirakawa]

Where could documentation on the OC Mailbox MSR be found? Those slides are interesting, why are they blurred?

[TrueRegulators]

i love what you did in the thumbnail :D

[alsteoaa.]

hello, for a good CPU support (i7-12700) to the ddr5 that yields a lot in "productivity" (considering the fact of changing ddr5 banks in 1/2/3 years with the model no longer "immature" while maintaining cpu) how can I orient the choice of MOBO to have a good "compatibility" and better optimization between cpu and ddr5? hypothetically especially with ddr5 banks that will come out in the future. (when will I (hopefully) have a net improvement over ddr4 for higher frequencies and lower timings, ex: 8000MHz CL 30). for example i had seen that intel 12 gen to have a significant improvement with ddr5 needs an overclock of the memory controller, for this purpose a mobo bclk would be fine, if you have to pay attention to something in particular? or would it be better to take the model K and a mobo z690 (even if I would go over budget with the cpu)?

[Astriomta]

hello, so between mobos for Intel 12 gen that allow overclocking of non-K CPUs there is only a difference in the BIOS? between mobo bclk and a non-bclk mobo it is not that bclk has an extra physical part on the mobo that allows you to generate the clock, but only the presence of the microcode on the BIOS changes, is that right?

[zaminnagiyev]

if I have z690 without external clock gen and I9 12900k it can go higher than 103mhz?

[Astriomta]

hello, I have read that even today there are many problems with ddr5 platforms, for a ddr5 build with i7-12700 as optimized as possible and effective even with ddr5 upgrade when better ram models come out, what mobo can I get, bclk? what i might need to tweak on the cpu to make it work better with ddr5 even at higher frequencies and lower timings in the future? I ask why I understand that with ddr5 no longer immature that will come out in 1/2/3 years the Intel 12 gen CPUs could lag behind in some processes compared to RAM so I am referring to something that could make the CPU work better with the ddr5. I was thinking about the memory controller overclock

[ZeleniKamion]

Brother can you please tell mee can i run 6000mts on i7 12700f ... when i enable it i dont have crashes while gaming and in memtest ... what do you think is it safe ???? For cpu ?? Motheroard supports even higher speeds i checked it... but imm worried about cpu ..