Laptop Intel i9 13900HX Thermal Throttling

From all the benchmark results I see, the Intel i9 13900HX runs pretty hot and at full load the temperature ranges from 80-90 degrees.

If you've got a laptop with i9 13900HX, can you do a stress test for 5-10min and tell me the sustained temperature?

I believe it should not exceed 90 as this would be the maximum threshold that a CPU can safely run.

Not a question of why it is on full load or why I am not using a desktop.

Just a general technical question about what the acceptable temperature is.

Please don't reply with argumentative comments just for the sake of it.

Would appreciate anyone with technical knowledge or experience.


  • What did your google search results indicate the temp would be?

    • Depends on the laptop but like I said on the post, temperature benchmarks suggests 80-90 degrees.

      • As per your description mods check out the technical answer web site toms hardware guide.

  • +1

    What are your thoughts?

    My first thought is 'what are you doing on a 24 core machine that you're going to be maxing it out on a regular basis?'

    And the second is 'and why aren't you doing it on a desktop?'

    • -1

      Not the answer I was looking for. Not helpful but only argumentative. Why buy anything? Stop being a troll.

    • some people need power in a portable package

  • Do you have a laptop cooler ? If not get one.

    also look at undervolting the cpu, it leads to less power consumption so reduces the cpu temp and puts less load on the internal fans.

    • -1

      Laptop cooler with 140mm fan didn't seem to have much effect. With undervolting, I can't find anything in the bios to adjust that. I don't think laptops have much options to adjust the voltage or anything to do with over or under clocking.

      • Sounds like you got a crap cooler.made a big difference on my 8/16 core dev lappy.

      • Does ThrottleStop work for Undervolting?
        Also I think the CPU can go up to 100C before throttling?

      • You don't undervolt in the bios, you use a program like msi afterburner.

        You can probably also install a program that creates a profile for your internal fan operations.

        As for the cooler, you need to see how the cooling works internally in your laptop, sometimes using an external cooler counters the fans on the bottom of the cooler, its also better to have a larger fan with lower rpms.

        There is alot of guides on youtube.

  • 13900HX is basically a desktop processor in laptop packaging. It's going to be hot. The T Junction temp is 100c so that's where it will start thermal throttling.

    For reference I have a Dell precision 3581 for work which has a 13800H which has 6 P cores and it spikes to 100c on 1 core very easily under light load. Dell has setup their fan profiles to wait until it gets stupid hot before kicking in. It's quite annoying tbh. With all cores at 100% load, it settles in at about 3ghz clock speed. Note that on a laptop, it will only boost to full clock speed for a short time, even with only 1 core utilised.

    If you can adjust the fan curve on your laptop and you want more performance, then you will have to be more aggressive on getting the fans to spin up sooner and/or faster. Undervolting will help too if your laptop is not locked. Sadly Dell lock down their laptops.

  • Temperature doesn't matter. These are HX CPUs that are unlocked so the user can adjust maximum turbo clocks, power limits, and voltages. It is these settings that will lead to the sustained performance that the cooling system can maintain. They are designed to give as much performance out of the box, so they are going to run hot.
    You can lock tjmax to 90C (like a lot of midrange models do to extend their life span, my locked down Aorus 15 XE4 does this out of the box) and temperature anxiety issues is instantly solved. But what performance you get for 90C compared to 95 or 100C is the next question and depends on cooling, which is heavily model dependent. But also tweak dependent. Mostly, undervolting, and limiting P core turbo which I find rather wasteful when you're capping power and hitting a 12th-14th gen CPU hard.
    Model wise just look for comparison reviews by tech sites and on YouTube.
    If you're after power efficiency you should also look at the 7945HX and 3D depending on workload. You get far more out of moderate CPU power with that (<100W) than the Intel i9. But like all Zen 4, it is designed to turbo to 95C which most people think is a bigger problem than it is. Intel CPUs blasting turbo beyond 5ghz sit above 90C too. CPUs aren't what die from heat, it's all the bits connected to it that get hot like solder bumps and VRMs. Which comes back to cooling. If you get that heat out of the case everything lives longer.
    Legion 7i gen 8 is hard to beat. Big vapour chamber cooler on the 4080-4090 models can sustain well over 100W with plenty of users and even turbo up to and over 180W on benchmark suicide runs, which you don't really want to do daily, but gives an indication of cooling system performance.
    (The new 9i is just as good on the CPU but adds price and bling and the world's most useless liquid cooling gimmick I've ever seen)

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