[SOLVED] Low turbo clock on i7 9700k (stock)

[metselaarsam]

Hey,

I have just upgraded my processor from an i5 9600kf to an i7 9700k but while doing a Cinebench benchmark I noticed the clocks wouldn't go above 3.78 GHz under full load.
It will clock way higher on lower loads, while writing this it's around 4.55 GHz while being minimally utilized but the clocks drop really fast whenever there's a significant load for the processor. (I know this in itself is normal behavior but I wouldn't expect the frequency to drop this much) I think this is strange because my i5 would hit 4.29 GHz consistently when under full load. There's plenty of room in terms of thermals I had around a maximum of 50 degrees Celsius on one of the cores.

The only conclusion I could think of would be my really cheap motherboard that doesn't support overclocking but I'm not sure if that's supposed to be affecting my turbo clocks.
Or is 3.78GHz a normal frequency for a stock i7 9700k while under full load?
The motherboard in question is a Gigabyte H310m S2H

Can someone give me a proper conclusion as to why this is happening and a potential solution to the problem?

Thanks,

Sam

 

[mdd1963]

Clear CMOS, Reset BIOS to defaults..

Is the CPU properly identified in initial POST display as a 9700K?

Swapping a CPU and simply rebooting can cause BIOS and/or OS confusion...

I'd do a fresh Win10 install, which will have you reinstalling proper H310 chipset drivers, then you can reevaluate what clock speeds are achieved in normal operation...; I would think any quality-built/manufactured mainboard could at least temporarily hit advertised clock speeds (4.6 GHz all core turbo, 4.9 GHz single core turbo) for approaching a minute or so, and, you might be able to squeeze out sustained operation with BIOS overrides of power limits/turbo boost duration, etc., either within the BIOS itself or within Intel's XTU.

 

[derwouldd]

Hey, mdd1963

Care to take a look at this?

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