Max safe core voltage for i9-10980xe ?

[Game_on]

Hello everyone. I'm trying to figure out what is the max safe core voltage for i9-10980xe ? I'm trying to achieve 5ghz on all 18 cores 24/7 stable thank you all any advice will be highly appreciated I'm using two 360 radiators and I'm watercooling the vrm as well. 

[Haro]

Just now, Game_on said:

'm trying to achieve 5ghz on all 18 cores 24/7

yea that most likely wont happen with reasonable cooling / voltages 

 

1 minute ago, Game_on said:

I'm using two 360 radiators and I'm watercooling the vrm as well. 

anything like a static 1.4 will be bad  

as i said 5ghz wont be achievable with reasonable voltages  

i personally would not go over 1.35 ( with a negative offset )

[Game_on]

@TofuHaroto what about 4.9ghz what voltage would you recommend ? 

[Mateyyy]

12 minutes ago, Game_on said:

I'm trying to achieve 5ghz on all 18 cores

Sorry to break it to you, but that's most likely not going to happen.

Regarding voltage, how much you require will vary between all chips. You'll have to try out for yourself.

 

The VRMs won't really require water cooling unless you're using the cheapest X299 board available, since most actually good HEDT boards are very overbuilt, but I mean it's up to you.

 

Edit: Just noticed you're using two 360mm rads (still not that that will guarantee that you can get to 5GHz). Anyway, off the top of my head, you'll want to stay under 1.25V to remain within reasonable temps (even with your custom loop). Check out Gamers Nexus' review of the 10980XE, I'm pretty sure they got quite a high overclock on their sample and they usually also mention what voltages they use. It also pulled around 500W of power btw.

Edited July 1, 2020 by Mateyyy

[-rascal-]

16 minutes ago, Game_on said:

@TofuHaroto what about 4.9ghz what voltage would you recommend ? 

 

You are going to need to experiment.

You use the minimum voltage required to keep the frequency overclock stable.

 

One i9-10980XE will overclock slightly differently compared to ANOTHER i9-10980XE, even if it came from the same silicon wafer.

Your CPU might not even make it up to 4.9 GHz -- it could max out at 4.6 GHz for all we could guess.

[Game_on]

at the moment I'm stable at 4.8ghz with a vcore of 1.23 volts on all 18 cores @-rascal-

[Game_on]

My question is funny but I'll only be ignorant for 5 minutes versus being ignorant forever no question with the intention of learning is a dumb question. thank you all for your help.

[porina]

Did they make any changes to the process compared to Skylake-X? If it is at least at Coffee Lake levels, that might help a bit but it will still be a struggle if you're only water cooling.

 

The single biggest problem will be the CPU running hot. If it is hot, you can't increase voltages further, and you have to find a balance between CPU temps and stability.

 

I can only offer my experience with the 7920X (12 cores) and looking at some overclocking notes I have, with a Noctua D15 on it, the best I was realistically getting was around 4.5 GHz around 1.15v. Beyond that I ran out of thermal headroom and went unstable. The 10980XE has some advantages, at the least being slightly newer and now soldered to IHS.

 

It'll be work, but just try it and see how far you can get. Chances are, you'll run out of thermal headroom long before you reach dangerous voltages.

 

6 minutes ago, Game_on said:

at the moment I'm stable at 4.8ghz with a vcore of 1.23 volts on all 18 cores

Nice. That's already a pretty decent clock. Personally I don't think it is worth pushing for another 200 MHz as the power goes up way faster than the clock in this zone. I do recommend checking varied workloads if this is to be a 24/7 overclock you use. 

[Game_on]

Ok thank you and yeah the 4.8ghz at 1.23 volts will be for 24/7 permanent use my temps as far as individual cores goes my hottest core is 60c @porina

[porina]

Just now, Game_on said:

Ok thank you and yeah the 4.8ghz at 1.23 volts will be for 24/7 permanent use my temps as far as individual cores goes my hottest core is 60c @porina

What loads are you testing with? My gut feeling is that setting wont be stable with some compute loads I do, but if you don't do those, no problem  Also you can mess around with AVX offsets if it becomes needed.

[Game_on]

currently im not running any hardcore or intense test just playing games and seeing stability that way. I know it's not the best stress and stability test but oh well lol @porina

[-rascal-]

3 hours ago, Game_on said:

currently im not running any hardcore or intense test just playing games and seeing stability that way. I know it's not the best stress and stability test but oh well lol @porina

 

I would recommend that you at least try AIDA64's built in stability test.

Run with the 'Stress CPU' and 'Stress Cache' selected.

Run with 'Stress FPU' if you want to see MAXIMUM heat, but usually just the above two is fine.

You can run together with the 'Stress system memory' too if you want, but typically only needed if you are overclocking memory, or running high XMP

(e.g. DDR4-3600+).