[SOLVED] Is there a way to throttle or overclock individual cores?

[shadow-gk]

Setup: 8600K on Asus Prime Z370-A with latest bios and Hyper 212 cooler.

So I'm trying to overclock the processor as much as possible, and in prime95 my core#4 freezes at 4.8 ghz and core#2 freezes at 4.9 ghz @1.345v. I would like to limit core#4 to 4.7ghz and core#2 to 4.8 ghz so that the rest of the cores could run at 4.9. Is there any software or bios way of doing it? I could get a better cooler and increase the voltage but that's not my concern right now.

Currently, with Turbo Boost and SpeedStep enabled, I have "per core" multipliers set like this:
1-core: 49
2-core: 48
3-core:48
4-core:47
5-core:47
6-core:47

This is not ideal because it just counts the number of active cores, rather than specific cores. That means core #2 and #4 MIGHT run above their limits in certain situations.
Disabling SpeedStep locks all cores at 4.7 ghz. Disabling turbo boost locks all cores at base 3.6 ghz and these multipliers have no effect at all...
I thought since turbo boost can boost certain cores at a time, it should technically be possible to set frequencies for individual cores, no? Or may be there's a windows way of limiting a core's frequency?

 

[william p]

Throttlestop software could split cores in pairs in the Core2 Quads in Windows. It required a text edit of Throttlestop to apply it to one 2 core CPU separartely.Since TS supports overclocking on unlocked CPUs it may work for this situation also.
Unclewebb the developer of Throttlestop often answers questions here.
He also posts regularly at the Throttlestop Overclocking thread at TPU.
https://www.techpowerup.com/forums/threads/throttlestop-overclocking-desktop-pcs.235975/page-22

 

[unclewebb]

https://ark.intel.com/products/126685/Intel-Core-i5-8600K-Processor-9M-Cache-up-to-4-30-GHz-

Intel Turbo Boost 3.0 has the feature you are looking for but your 8600K only uses Turbo Boost 2.0. That means that all active cores are forced to use the same multiplier. There are no magic tricks in ThrottleStop or in Windows to get around this limitation.

 

[shadow-gk]

https://ark.intel.com/products/126685/Intel-Core-i5-8600K-Processor-9M-Cache-up-to-4-30-GHz-

Intel Turbo Boost 3.0 has the feature you are looking for but your 8600K only uses Turbo Boost 2.0. That means that all active cores are forced to use the same multiplier. There are no magic tricks in ThrottleStop or in Windows to get around this limitation.

That's sad. How come I can't disable Turbo Boost altogether and just set constant frequencies to each core?