Optimal settings Z790 Tomahawk Wifi Max i9 14900k

[MigraineFilms]

Hi all, as I was filling other threads with questions, here is a dedicated thread to my question.

Can you help me getting my i9 under control, it keeps thermally throttling even under very low power settings, and I dont fully grasp the undervolt settings.

My system:
i9 14900k
MAG Z790 Tomahawk Wifi max
Deepcool LT720 AIO
Contact Frame
DDR5 Trident Z 6400
Samsung 990 Pro
RTX 4080 Super
Corsair Shift RM1000x

So far I've done this:

Lowered PL1 and PL2 to 175 watts
Lite Load 9 (AUTO)
Voltage adaptive/offset -0.125 (screenshots still say -0.110, changed this, still throttles)

It can run for hours perfectly fine, benchmarks all doing great, cinebench R23 multiple runs, Prime95 30 minutes heat/stress test and then when I take a screenshot, HWiNFO says its thermally throttling without showing any high temperatures. HWiNFO also refreshes slowly, even on 1000ms, since the latest update.

Any advice is much appreciated

P.S: I do not experience any instability in the past 6 months I owned this computer, besides a sporadic lag in the audio, there are no crashes, app hangs, game failures, BSOD's or any of that kind.

Edit: All the information is a bit overwhelming and I'm feeling I'm getting lost in all the numbers a bit

 

[FlyingScot]

I hear you, I need one too. I’ve been troubleshooting this MFer since Feb 2024. I’m done for now and with hyperthreading disabled 99.99999% of my problems are gone. Hope I didn’t jinx it.

Definitely a big big "Roger...10-4!"

 

[MigraineFilms]

I'm perfectly content with my PL230, LLC6, AC/DC40, -0.100V. 39000k score, temps around 75 degrees. PL250 has 39500 R23 score, temps shooting to 89 degrees on P-core 7. I see no benefit to that power load.

My VID's stay around 1,170 under load, 0,830 at idle (27 degrees at 19 degrees room temp), 1,34 volt during gaming/video editing. System is perfectly stable for months now, played around 6 or 7 UE5 engine games, no crashes, no BSOD's, no oodle compression errors, no WHEA errors, I'm perfectly content with my system as it is. Maybe spend around 100 euro's too much on CPU considering performance and issues, and it gave me too much headaches in the past year, but right now, I'm perfectly fine.

Do note: I'm editing video in ProRes 4444 codec, which is a CPU bound codec. This makes my CPU run at 100% during playback and editing (because it's decompressing real time). Intel also has Quick Sync to decompres H264 in real time during editing. This means that my CPU is running full steam during work, and it's not benefitial to have it at PL250, it will only degrade faster.

 

[FlyingScot]

I'm perfectly content with my PL230, LLC6, AC/DC40, -0.100V.

That’s basically what you submitted to the Survey database on Sept 20th. That must be the best setup if you‘re sticking with it after all of your many hours of testing.

 

[coggre127202a7]

Hello MigraineFilm

It was very nice if you could make some pictures here from your setting bios
Thx

 

[MigraineFilms]

Hello MigraineFilm

It was very nice if you could make some pictures here from your setting bios
Thx

Here you go:

 

[coggre127202a7]

Thanks a lot

 

[alejolopezlpd14d002c5]

Here you go:



View attachment 194982View attachment 194983View attachment 194984View attachment 194985View attachment 194986View attachment 194987

I copied your bios and improved my CPU, thanks a lot for sharing. But I have a query my voltage goes from 0.7 to 1.2 constantly, is that normal (with the cpu out of use)(i have a 14900kf and a z790-tomahawk-wifi)? and also something that happens is that the maximum exceeded 230w (the caul esat set as limit) reaches up to 270w.Is that normal?​

 

[MigraineFilms]

I copied your bios and improved my CPU, thanks a lot for sharing. But I have a query my voltage goes from 0.7 to 1.2 constantly, is that normal (with the cpu out of use)(i have a 14900kf and a z790-tomahawk-wifi)? and also something that happens is that the maximum exceeded 230w (the caul esat set as limit) reaches up to 270w.Is that normal?​

Jumping from 0.7 to 1.2 is normal, there are countless of apps running in the background, and as soon as one pings to an update server or just does its job, it needs CPU power to do so. This causes a small jump in voltage for a short time. Even HWiNFO causes voltage elevation when it updates the readings. You just dont see it because before the next update occurs, its gone again.

It should not reach 270 watt if the limit is set to 230, although its not unheard of. You might benefit from additional tuning to your CPU, maybe lower the AC and DC values more, or just ignore my settings and try a low Lite Load setting, with IA CEP disabled, first. Every CPU is unique, every motherboard is unique, they all have their own sweet spot in the settings.

 

[FlyingScot]

It should not reach 270 watt if the limit is set to 230, although its not unheard of. You might benefit from additional tuning to your CPU, maybe lower the AC and DC values more

We have observed the same phenomenon during our recent under-volting tests with Alex-Predator’s 13900K system. And no amount of changes to the DC_LL value (which should fix the overage) appears to have helped. It’s very odd. I plan to do some of my own investigations this winter.

 

[alejolopezlpd14d002c5]

Jumping from 0.7 to 1.2 is normal, there are countless of apps running in the background, and as soon as one pings to an update server or just does its job, it needs CPU power to do so. This causes a small jump in voltage for a short time. Even HWiNFO causes voltage elevation when it updates the readings. You just dont see it because before the next update occurs, its gone again.

It should not reach 270 watt if the limit is set to 230, although its not unheard of. You might benefit from additional tuning to your CPU, maybe lower the AC and DC values more, or just ignore my settings and try a low Lite Load setting, with IA CEP disabled, first. Every CPU is unique, every motherboard is unique, they all have their own sweet spot in the settings.

Look at how it looks when rendering in premiere, and in "hwmonitor" the maximum is 278 watts but "hwinfo" is different, so don't know if it's OK or not

 

[MigraineFilms]

Look at how it looks when rendering in premiere, and in "hwmonitor" the maximum is 278 watts but "hwinfo" is different, so don't know if it's OK or not

use HWiNFO, not HWMonitor.

Also, different question: if you're using premiere, why did you go for the KF model? I find the integrated graphics in the CPU a godsend with intel quicksync, it encodes h264 in real time using the igpu

 

[venkatesh199152502d0]

@MigraineFilms @FlyingScot

Give a try with my values (using latest BIOS and Microcode 0x12F)

• P-Cores: All Cores @57
• E-Cores: All Cores @43
• CPU Core Voltage Mode: Adapative + Offset
• CPU Core Voltage Offset Mode: -
• CPU Core Voltage Offset: 0.100
• CPU Loadline Calibration Control: Mode 6
• PL1/PL2: 233W
• AC Loadline: 40
• DC Loadline: 110
• ICC: 307A
• CPU VR Voltage Limit: 1.4V

Under Load: < 1.10V @5.3GHz with max 250W and max. Temp of 85°
Cinebench R23 scores ~39k