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Stock 12700K - no longer a couple of cores hitting 5Ghz

jamieboo

jamieboo

jamieboo

Associate
Joined
29 Oct 2009
Posts
369
Hello folks

I recently updated my Asus Z690 Tuf Gaming Plus Wifi D4 motherboard bios from 1304 to 1504 and all seems pretty good, I've noticed slightly improved DPC latency which is good as I use the machine for audio production.
However I notice that none of the cores of my 12700K ever reach 5GHz now. Previously, if under strain, there would always be a couple of cores that would boost to 5GHz, but that doesn't seem to happen now.
I have not set anything differently in the bios to how it was before: XMP 1, but apart from that pretty much stock.
Turbo 3 is still enabled, and I understand that is the thing that would normally allow limited boosting to 5Ghz.
Using Cinebench R23, on multicore the CPU gets to 4.7, and singlecore get's to 4.9 on some cores - which I gather is pretty much typical if Turbo 3 is disabled - but like I said it's enabled.
I can't see any voltage changes anywhere and the problem doesn't seem to be due to thermal throttling.

Maybe I was just imagining a couple of cores hitting 5Ghz in the past! :)


Any ideas?


Thanks
 
jamieboo said:
Hello folks

I recently updated my Asus Z690 Tuf Gaming Plus Wifi D4 motherboard bios from 1304 to 1504 and all seems pretty good, I've noticed slightly improved DPC latency which is good as I use the machine for audio production.
However I notice that none of the cores of my 12700K ever reach 5GHz now. Previously, if under strain, there would always be a couple of cores that would boost to 5GHz, but that doesn't seem to happen now.
I have not set anything differently in the bios to how it was before: XMP 1, but apart from that pretty much stock.
Turbo 3 is still enabled, and I understand that is the thing that would normally allow limited boosting to 5Ghz.
Using Cinebench R23, on multicore the CPU gets to 4.7, and singlecore get's to 4.9 on some cores - which I gather is pretty much typical if Turbo 3 is disabled - but like I said it's enabled.
I can't see any voltage changes anywhere and the problem doesn't seem to be due to thermal throttling.

Maybe I was just imagining a couple of cores hitting 5Ghz in the past! :)


Any ideas?


Thanks
Click to expand...
Background tasks? Usually steam / icue and other similar apps don't allow Intel cpus to hit the maximum ST speeds.
 
Bencher said:
Background tasks? Usually steam / icue and other similar apps don't allow Intel cpus to hit the maximum ST speeds.
Click to expand...
Thanks for the quick response Bencher.
Yeah, I already checked, there's barely anything running in the background. It's the same testing condition as before the bios update, but now no cores hit 5Ghz. All the P-cores hit 4.9, but none go further.
 
It seems the new microcodes in the bios have amended the boosting algorithms. This is sometimes common, it's just that many people don't notice it.

What you needed to have done is to run benchmarks before and after the bios update. This will indicate if it is overall the same, faster or slower and by how much.
 
MartinPrince said:
It seems the new microcodes in the bios have amended the boosting algorithms. This is sometimes common, it's just that many people don't notice it.

What you needed to have done is to run benchmarks before and after the bios update. This will indicate if it is overall the same, faster or slower and by how much.
Click to expand...
They should call that kind of thing out shouldn't they? Bios changelogs are awful
 
cfletch said:
They should call that kind of thing out shouldn't they? Bios changelogs are awful
Click to expand...
Welcome to the disparity between what we think companies should do and what they actually do. ;)

I am currently using a modded bios for one of my motherboards with the faster microcodes from a much older bios along with the other newer and better additions/features in the latest bios.
 
MartinPrince said:
Welcome to the disparity between what we think companies should do and what they actually do. ;)

I am currently using a modded bios for one of my motherboards with the faster microcodes from a much older bios along with the other newer and better additions/features in the latest bios.
Click to expand...
That's some serious modding!
 
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