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« on: 2024-08-22, 12:08:30 »
So as you can see you are reaching 100°C, that's the maximum operating temperature for this processor...and that is with water cooling, 2150rpm radiator fans.
You can expand Core Clocks row to see what are the frequencies of 8 Performance cores and what are on 16 Efficiency cores.
304-309W is too high consumption thanks to high default voltage set by Intel. You should be able to keep it on more resonably values for your cooling solution and location where you live... so something max. 250W.
Sadly I do not have these new generation of processors, I am on older rocket lake 11700F cpu, but the principles how to undervolt are the same.
In bios you should be able to find something like:
P-Core Ratio Apply mode - All Core
P-Core Ratio - change Auto to value you want to have for Performance cores, e.g. "50" which means 50x100MHz = 5GHz
The same for E cores, but E cores have maximum turbo frequencies just 4.4GHz, so you will set Auto to "44", because those are efficiency cores and you want use them on max.
Next find Long Duration Power Limit(W), Short Duration Power Limit(W) and set it to max. values, or at least over 250W. Long Duration Maintained(s) set to max value.
It was also adviced to disable Enhanced Turbo, because you will be using fixed frequencies and you don't wanna CPU to affect this.
Next step is set the voltage. For this purpose you can use Intel Extreme Tuning Utility and use slider to set negative voltage offset. You can start with values -50mVolts, -75mV, -100mV, ...and always remember what is the current value, e.g. 1.243V. As you will be decreasing the voltage value you will find the value when PC freezes or some BSOD will appears. Then you need to set that value one step back(to higher voltage). Then you should run some rendering tests to see if that voltage value is safe even after few seconds/minutes of rendering. Intel XTU has built-in benchmark which is utilizinx AVX instructions, which needs slightly higher voltage.
If everything will be stable, you can mark the voltage value for this 5.0GH frequency and you will see what are the resulted temperatures and power consumption and then you can decide, if you have reserves for higher frequencies or not.
When you will be satisfied, you can set the voltage value in bios. You should be able to find something like CPU Core Voltage Mode - set it from auto to Override Mode and set the resulted voltage, e.g. 1.162V.
In most of the undervolting videos it is advised to set only negative offset voltage, e.g. -0.1V. The problem is, that offset is universal for all frequencies and your undervolting will be not so efficient as if you will use fixed frequency for all cores and exact lowest voltage.
I am not sure if it is possible to set different voltage also for E-cores. Dependence between frequency and voltage is not linear. With increasing frequency the value of voltage is behaving exponencialy. Every +0.1GHz needs a lot more and more voltage. So those E-cores can run at voltage ~1.0V or maybe even less...so you can save a lot of power for Performance cores.
This way I found the lowest functional voltage for my 11700F CPU for several frequencies (3.6GHz, 3.8, 4.0, 4.2, 4.4), and I am using 4.4 in winter and only 4.0 in summer when outdoor temperatures are higher, otherwise I would be not able to cool enough my CPU with air cooler.
EDIT: Voltage values you can see in HWiNFO (Core VIDs) are slightly different then values you will set in bios. e.g. if you set 1.170V in bios, you will see ~1.194V in HWiNFO Core VIDs.
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