i9-9900K Overclock

Matthew Hunt

Matthew Hunt

Matthew Hunt

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Joined
6 Jun 2018
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228
Main question.
Do I have a bad processor?

So I have tried multiple times to try and get my CPU to overclock to 5Ghz, which is apparently meant to be very possible with the 9900K.

I have a Corsair H115 AIO cooler, and ASUS Maximus XI Hero Wifi motherboard.

What settings should I be trying and voltage to get the CPU stable at 5GHz?
 
I ended up following the settings from this guy:-
https://www.youtube.com/watch?v=bM5XO96b4G0

However I only managed to get 5GHz using a 500mhz AVX offset @1.32V.
My temps also reached the high 80s.

I know the 9900K runs hot, but these seemed very hot to me, personally I don't like the H115 cooler anyway as the fans are pretty audible and very tempted to switch back to air cooling and purchase the Noctau Black Chroma.
 
Corsair Vengence 3200 - TBH I just have a DUD of a processor.
It is the only CPU I have owned where I have not managed to get any stability going on.

I just lost the silicon lottery, it doesn't matter too much as the performance of the CPU at stock is good enough.
I overclock for the love of it more than the performance gain.
 
Yeah, I am not going to..

At what overclock speed across all cores are you getting better performance than out the box?
This was just from testing again over the weekend with a new BIOS, hopefully I will be able to push the system further or with less voltage when I have more time.
 
My 9900k is 52x core 48x uncore at 1.35v with LLC 6 on a Z390 Apex. No avx offset. I can run lower voltages with xmp but I have my ram pretty maxed out (16/4200 1T) which adds a lot more stress to the CPU. I test using OCCT Large/AVX2 primarily. 2hrs.

Both mem and cpu frequency play a role in gaming performance. Something like TimeSpy CPU is a good indication as it scales with both cpu and mem nicely. 13,500+ is the cpu score you'd want to aim for with a well tuned 9900k. Geekbench 4 is another good one that is sensitive to core, cache and mem.
 
Robert896r1 said:
My 9900k is 52x core 48x uncore at 1.35v with LLC 6 on a Z390 Apex. No avx offset. I can run lower voltages with xmp but I have my ram pretty maxed out (16/4200 1T) which adds a lot more stress to the CPU. I test using OCCT Large/AVX2 primarily. 2hrs.

Both mem and cpu frequency play a role in gaming performance. Something like TimeSpy CPU is a good indication as it scales with both cpu and mem nicely. 13,500+ is the cpu score you'd want to aim for with a well tuned 9900k. Geekbench 4 is another good one that is sensitive to core, cache and mem.
Click to expand...


Just curious about your 1.35v setting.......

Is that what is entered in the BIOS or measured when under load..? If it is measured under full load are you looking at vcore or the vr vout, which is more accurate...?
 
Robert896r1 said:
that's set in bios. For load i use vcore reading in hwinfo since it's accurate on asus maximum boards.
Click to expand...
ah, with the Master Z390 board there seems to be the thought that using the VR Vout reading is more accurate, always note it lower than the vcore. That also is using hwifo64.

I have limited my OC of the 9900k to an all core 4.9ghz, it varies from 800mhz to 4.9ghz. Seems to run cool enough even on the hottest of days.
 
Vimes said:
ah, with the Master Z390 board there seems to be the thought that using the VR Vout reading is more accurate, always note it lower than the vcore. That also is using hwifo64.

I have limited my OC of the 9900k to an all core 4.9ghz, it varies from 800mhz to 4.9ghz. Seems to run cool enough even on the hottest of days.
Click to expand...

yep. The z390 GB boards expose the vrm controller thus you get accurate readings as well. Power (pout) is also more accurate than cpu package power which relies on vid instead of vcore.

Lowering switching frequency to 300khz and using offset voltage is the ideal method of maxing out cpu oc on the Gb z390 boards. Look into it.
 
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