9600KF Unexpected Overclock

[Mr Mcgoo]

So, it would seem my 9600kf is a little odd. For a while now I was hitting 4.8ghz @ 1.2v and 4.8ghz avx @ 1.248v. I would then have to increase voltage by .05v for every 100mhz to be fully stable so 5ghz is my max before pushing over 1.35v for 5.1ghz+.

After messing around today for most of it, it turns outs cache ratio is the issue. As soon as I go above 45x cache I have to add a lot more voltage to be stable as above. So at 4.8ghz I was at 4.5ghz cache and add 100mhz to both for making me add .05v to be stable.

So i did a little test and kept cache at 4.5ghz and surprize I am stable so far at 5ghz @ 1.264v and 5ghz avx @ 1.308v. I tried cache 4.6ghz and I suddenly needed 1.296v non avx and 1.344v avx to be stable and voltage only increased for each 100mhz cache.

Strange that my 5ghz avx load dropped from 150watts to 135watts. that's a large saving in energy. so to make sure I am fully stable I fired up a few games varying in cpu usage. from most cpu intense first we have warzone, ark survival evolved, killing floor 2 and crossout. All past for 1 hour gameplay each. The gameplay is the main reason for me having to take a whole day testing but so far 5ghz stable far lower then expected

5.1-5.2ghz here I come, maybe?

 

[Mr Mcgoo]

no idea if your being sarcastic or not (you are) but either way your welcome.

 

[Mr Mcgoo]

4 posts in 9 years leads me think he is being quite genuine.

Glad you discovered that you should leave the cache at 4.5Ghz when overclocking the core and once you've got the core stable only then bump the cache up in increments until unstable. My cache went to 4.9Ghz, without touching the voltage which was 5.3Ghz @ 1.305v.

i miss my 9700k. it randomly died a few months back. booted pc and nothing (00 debug code). sent back to intel and they confirmed the chip refused to detect itself on the mobo so reads error code 00. shame that was a great cpu 5ghz 1.25v. so had to get a 9600kf as that is all that was in stock as intel had nothing else. i did get a refund for the remaining £140 extra as the 9700k would have cost £360. i then upgraded my watercooling.

I will have a 9700k again soon

 

[Mr Mcgoo]

Based on your recent post (cpuz benchmark all welcome) it would seem you lied about not only being at 5ghz @ 1.373v but also at being stable at 1.238v. Your only at 4.8ghz @ 1.354v without avx load in that thread. Try loading cinebench and watch your voltage hit 1.392v+ as that is what you'll get if your not using avx offset.

 

[Mr Mcgoo]

Im well aware of what voltages I get with what types of workloads I'm shoveling towards the CPU, including what happens in CB.

i guess thats once way to overheat your cpu lol. what temps do you get at 5ghz running cinebench multi core for one run?

 

[Mr Mcgoo]

you get around the same temps as me, without chiller of course. sure lets see what results you get after running some tests.

 

[Mr Mcgoo]

not bad. 5.2ghz and getting 77c @ 1.392v. i will upload my cinebench with hwinfo so you can see my clock speed voltage and temps sometime tomorrow.

Edit: i can only do 5ghz safely as to get 5.1 i need 1.360v (75c) and 5.2 i need 1.408v (79c) for me anything above 1.35v or 70c is beyond my safe spot

 

[Mr Mcgoo]

What's the max frequency you have hit with your chip? Have you tried for frequency only? Sounds like you might be a little timid.

80C leaves plenty of headroom. No risk of degradation. At all. Remember that's only a single core most are averaging a good bit less.

But fair warning, my 9600KF does get pretty nasty with liquid to liquid chiller attached. Danger close!

I haven't gone above 5.2ghz as i don't want to risk damaging my cpu nor will i try for the hell of it lol.