Modifying the Current/EDP limit throttling in Aspire TC-1780?

SamCem

Hello,

I have a desktop “Aspire TC-1780” with Intel i5-13400, 16GB RAM, 180W power supply.
In the Cinebench R23 benchmark, I noticed that the multi-score of my PC (14500 points) is slightly lower than the values published on the Internet for the same processor (approx. 15900 points)

I finally found the cause thanks to the “Intel Extreme Tuning Utility” program: The turbo clock of the P-Cores is constantly “only” 3.8 Ghz in the benchmark instead of the max. possible 4.6 Ghz. This is because “Current/EDP Limit Throttling” is also constantly active, which limits the maximum power consumption to approx. 90-95W.

Since I couldn't find a setting in the BIOS to change this threshold, I tried using “ThrottleStop” to increase the power values Pl1 and PL2 - but this didn't lead to any change in the CPU clock, and “Current/EDP Limit Throttling” is still active in the benchmark.

Is there any other way to increase Current/EDP threshold?

I only want to increase it for a short time for testing purposes. In normal operation, the current 90W threshold probably makes sense anyway.

[Edited the thread to add model name to the title]

unclewebb

Set Power Limit 4 to a value of 0 in the ThrottleStop TPL window. You need an unlocked K series CPU to increase the IccMax current limits. If adjusting PL4 does not work then you are out of options.

SamCem

I set PL4 to 0, but nothing changed. My CPU is not a "K-series" but an i5-13400, so I'm not sure if its possible to unlock it to change current limits

unclewebb

It is not possible to unlock an i5-13400. The current limit is fixed and cannot be changed. Endless EDP throttling is the result. Next time you buy a laptop, get one with an unlocked HX processor.

billsey

Be aware that if you try to replace the CPU with a K series, the BIOS won't support the extra features and you will have to revamp the cooling to handle the extra TDP.