what is the lowest volt you think for a stable 9700k at default 4.6 ghz all 8 cores, or small oc 4.8 ghz ? - Overclock.net - An Overclocking Community

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what is the lowest volt you think for a stable 9700k at default 4.6 ghz all 8 cores, or small oc 4.8 ghz ?

 
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post #1 of 9 (permalink) Old 04-20-2019, 05:23 PM - Thread Starter
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what is the lowest volt you think for a stable 9700k at default 4.6 ghz all 8 cores, or small oc 4.8 ghz ?

interested in how much volt the 9700k requires on average at the stock 4.6 ghz all 8 core turbo frequency? I know this can vary depending on cpu quality and motherboard volt settings/motherboard models etc , if i'm not mistaken? this would be with MCE off and multiplier set to 46-48, then lets say we can adjust the LLC and volt method like adaptive/auto/offset etc, what would be best way to get lowest and stable volt for 4.6 ghz all core turbo or small overclock to like 4.8 ghz max?



saw some users getting 4.8 ghz stable all cores at 1.2v for example, this is probably lucky, you think 1.2v for 4.6 ghz all 8 cores should be super easy and no problem? or can you go even lower?



btw I know the single core turbo is set at up to 4.9 ghz, this is irrelevant to me and i'm only interested in all 8 core load frequencies like gaming etc, aswell as other reasons I would like to keep the frequency at 4.6-4.8 ghz max, with as low volt as possible (case airflow/cooling not the best, the cpu cooler itself is also not the largest one to fit into the small case, etc)


appreciate any help and comments!
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post #2 of 9 (permalink) Old 04-20-2019, 05:25 PM
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Looks like same question posted here https://www.reddit.com/r/overclockin..._for_a_stable/ which I already provided an answer to there.

Some 9700k overclock results posted here, though nothing at the slower speeds you mention.

FYI, there's no way to "know" the answer to your question. You have to just try and see what test results you get. There's no description of your "not very good" cooler or "not very good airflow" that would give us any idea what it could handle. And, as you already know, chips vary from one to another.

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Last edited by jfriend00; 04-20-2019 at 05:28 PM.
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post #3 of 9 (permalink) Old 04-20-2019, 05:39 PM
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Set LLC so you get a tiny bit of vdroop under load, you need to be in manual mode to test this. Usually the Intel spec of 100% is somewhere in the middle but not always.


You can set voltage as low as you want just like any other CPU, just make sure it's stable. Unless you're thermally limited at a modest 1.25v ther's no reason to find the absolute lowest possible voltage a CPU will run a given speed at. The temp difference from dropping 0.002 is almost nothing, at such low voltage the load is more of a factor than tiny little vcore bumps.
The easiest way to max out what you can do with your cooling is to set the speed to x46 then gradually go up in vcore untill you've found the thermals under load you'd like. Then bump the speed and stress, repeat till you get a crash then back off.


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post #4 of 9 (permalink) Old 04-20-2019, 06:14 PM - Thread Starter
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Quote: Originally Posted by jfriend00 View Post
Looks like same question posted here https://www.reddit.com/r/overclockin..._for_a_stable/ which I already provided an answer to there.

Some 9700k overclock results posted here, though nothing at the slower speeds you mention.

FYI, there's no way to "know" the answer to your question. You have to just try and see what test results you get. There's no description of your "not very good" cooler or "not very good airflow" that would give us any idea what it could handle. And, as you already know, chips vary from one to another.
indeed, and as I said the last time you replied to me on both boards, I usually do this to cross reference and get as many answers and feedback as possible, or just as quickly as possible

I replied to you on reddit aswell with my reasons of why i'm interested in this, and how i'm aware of the single clock turbo speed and a bit more info about case/airflow/budget reasons,

Quote: Originally Posted by white owl View Post
Set LLC so you get a tiny bit of vdroop under load, you need to be in manual mode to test this. Usually the Intel spec of 100% is somewhere in the middle but not always.


You can set voltage as low as you want just like any other CPU, just make sure it's stable. Unless you're thermally limited at a modest 1.25v ther's no reason to find the absolute lowest possible voltage a CPU will run a given speed at. The temp difference from dropping 0.002 is almost nothing, at such low voltage the load is more of a factor than tiny little vcore bumps.
The easiest way to max out what you can do with your cooling is to set the speed to x46 then gradually go up in vcore untill you've found the thermals under load you'd like. Then bump the speed and stress, repeat till you get a crash then back off.


https://www.overclock.net/forum/5-in...tatistics.html
thanks! i've seen users running the stock 4.6 ghz across all cores at under 1.2v like 1.17 and so on, stable under p95, but anyway I believe I have some ballpark estimates now and a bit more info than previously,

the thermal headroom in my case will be limited under heavy loads on the 9700k even at stock speeds, atleast for the near future until I can make upgrades in other departments like case, airflow, and cpu cooler :S

cheers though
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post #5 of 9 (permalink) Old 04-20-2019, 09:39 PM
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My guess is 1.15volts
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post #6 of 9 (permalink) Old 04-21-2019, 03:00 PM
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I would try what he says above ^^.

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post #7 of 9 (permalink) Old 04-22-2019, 09:09 AM
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I have mine at 1.165v for 4.6ghz all cores.

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post #8 of 9 (permalink) Old 04-22-2019, 09:57 AM - Thread Starter
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Quote: Originally Posted by R.D.BID View Post
I have mine at 1.165v for 4.6ghz all cores.

sounds good ! thanks for the info
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post #9 of 9 (permalink) Old 04-22-2019, 10:58 AM
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who knows, I set 1.42 @ 5.3 & called it a day.
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