Asus Z690-A... Limit 13900kf max temps in bios ??

digitaldreams · 28 Sep 2023 at 22:46

I want to limit MAX temp of my processor via the bios after seeing it hit 100c.

If I go into ASUS Multicore Enhancement I get the options....

..Auto
..Disabled - Enforce all Intel limits
..Enabled - Remove all limits - maximum performance
..Enabled - Remove all limits (90c)

Only the last option seems of use here, 90c limit yet not low enough. If I drill down to the next level I see what I want. 'Max CPU temp', 'Package thermal threshold' and 'regulate frequency by above threshold' yet the first two are greyed out whatever I select on the prior screen !?!

How do I change these options alone ?

mattyfez · 5 Oct 2023 at 16:40

Rather than limiting the max temp, another way to approach the issue would be a negative offset on the vcore voltage (under volting, essentially).

I've had fairly good results doing this on a 13600k on an ASUS prime z790.

I can't remember the exact gains, but in cinebanch it compared to stock bios setings*:

Did not lose any performance to speak of, about 100 points or something - margin of error territory.
recuced peak temps in cinebench.
reduced peak power draw of CPU running cinebench

*XMP has always been enabled so not technicaly stock

Edit, ahh here:

Asus z790 cpu undervolt help!

Pullin may hair out here - I can set offset to minus but can't see where I can enter a value? Any ideas? Thanks!

forums.overclockers.co.uk

Cinebench scores teh same within margin of error, around 23500 give or take 50 between runs.
Peak CPU wattage is down by 15watts.
Peak CPU temperature is down 10c.

mattyfez · 5 Oct 2023 at 16:53

digitaldreams said:
Only the last option seems of use here, 90c limit yet not low enough.

Just to add, peaking at 90c in a benchmark isn't that bad as long as it's not hitting 90 on a regular basis during your standard usage patterns.

digitaldreams · 5 Oct 2023 at 17:18

mattyfez said:
Just to add, peaking at 90c in a benchmark isn't that bad as long as it's not hitting 90 on a regular basis during your standard usage patterns.

It was stuck at 100c for quite a while while installing a game !. Concerns of motherboard bending amongst other things...

mattyfez · 5 Oct 2023 at 17:27

The system will hard shut down if it gets too hot, but before that, it will throttle speed and voltage.

The T-Junction Max for that chip is 100c

Intel® Core™ i9-13900KF Processor (36M Cache, up to 5.80 GHz) - Product Specifications | Intel

Intel® Core™ i9-13900KF Processor (36M Cache, up to 5.80 GHz) quick reference with specifications, features, and technologies.

www.intel.com

So if/when you hit 100c, you can excpect some hard speed throttling before an eventual hard shutdown for safety.
You're not realistically going to damage anything unless you've turned off some of the safety measures in BIOS.

EDIT, although it is odd you hit 100c just installing a game... maybe there is some other variable going on here, but I'm struggling to think whatit would be.

What are your peak cinebench temps?