Asus UX31A Heavy Load Temperatures

In the post about how to upgrade SSD drive on UX31A user commenter Iosif Bancioiu asked how  my UX31A’s temperatures are under heavy load and in idle.

I performed heavy load tests in room that had about 23°C, I run stress test with program called HeavyLoad that during test performs:

  • Full CPU load
  • writing to a temp file (ssd stress)
  • allocates full virtual and physical memory (memory stress)
  • simulates disk accesses (more useable in with hard disk, than ssd)
  • stresses GPU with 3D rendering graphics.

I first run the test for 5 minutes to warm up the PC and then I run 10 minute test while I measured temperatures and other parameters with program HWiNFO64.

Temperature results on test are:

  • CPU:
    • min: 88.0°C
    • max: 91.0°C
  • GPU cores (CPU GT Cores):
    • min: 86.0°C
    • max: 89.0°C
  • Intel PCH:
    • min: 70.0°C
    • max: 76.6°C
  • Crucial SSD:
    • min: 53.0°C
    • max: 58.0°C
Screenshot of the test results. Click on the image for full image, with all the details about the test.

If we check Intel’s specifications on i7-3517U it is declared that processor has T_JUNCTION = 105°C. Intel declares: Junction Temperature is the maximum temperature allowed at the processor die. It seems that processor is running as expected and in not too hot.

Regarding SSD, I didn’t found specs for my SSD exactly, but for similar SSDs Crucial is reporting operating temperatures from 0°C to 70°C, which also shows that SSD isn’t too hot.

19 thoughts on “Asus UX31A Heavy Load Temperatures”

  1. Thanks for testing and publishing your stats.
    I’ve done the same with the Transcend MTS400 M.2 SSD 256GB ( SATA III, MLC (22mm x 42mm x 3,5mm) –>

    This is what I got:

    Do you think the values are fine?
    I am a bit worried about the 70C max.

    I did test the UX31e while just surfing / idling and got this:

    Is it normal to have 46C while idling? Do you mind doing the same test (surfing/idling) with your machine? Cheers

    1. I think these temperatures are on hotter side, but I wouldn’t think they are “through-the-roof” hot. As you can see here:
      Operating Temperature 0°C(32°F) to 70°C(158°F)

      These disks are more or less exclusivity cooling via heat transfer to the housing – is your disk touching the housing of the laptop?

      1. Not sure if it’s touching, I don’t think so. In any case, I added the the plastic anti-static bag and some electrical insulation tape like you suggested.

    2. its been a long time but maybe i can explain these temperatures…

      your cpu seems to be running way too hot. at idle i’m between 50 and 65 and the temperature never rises above 80 and most of times stays below 75.

      those high temperatures are distributed by the aluminium case to all other components therby heating up the ssd.

      i’d guess your thermal grease isn’t working right (you can check this by running something like prime95 and see if you cpu is throtteling or removing the base and touching the heatsink of the cooler, if its not too hot to touch the thermal grease is gone). just remove the cooler clean the chips and the base of the cooler and replace the thermal grease. you’ll see temperatures and fan speed drop dramatically

  2. Anti static bag is to make sure that nothing is in electrical contact with housing. I know that disks with the big adapters (the one I used and posed on blogpost) touch the antistatic bag, which is taped to the housing. Because the touching heat transfer from the disk towards the housing is much better. If these new thin adapters are so thin that disk doesn’t touch the bag heat transfer is greatly reduced (no direct heat conductivity) so cooling is reduced to heat transfer to surrounding air and radiation. That must be cooling reduction for ~70% (don’t quote me on that, but number is huge).

    I noticed that these disk need heat sink (which in my notebook is the aluminium case – because of contact, and you don’t have it) when I played with the failed drive on my normal PC (tower table PC, not the notebook), I ended gluing it with glue gun to the casing of the PC, that reduced the temperatures from ~50°C to ~30°C when in heavy use.

    1. Dear Jure, as I right understood you it’s better to use more thickness adapter because of heat reduction? Right?

  3. An impressive share! I’ve just forwarded this onto a colleague who had been doing a little
    research on this. And he actually bought me lunch because I stumbled
    upon it for him… lol. So allow me to reword this…. Thanks for the meal!!
    But yeah, thanx for spending some time to discuss this issue
    here on your internet site.

  4. Hi everybody and thanks for the useful post!

    I’ve changed my old crash A-DATA in my UX31 and I installed a Samsung EVO 850 M.2 with the M.2 adapter and I installed Windows 10 from scratch. I cleaned the fan.
    Before my SSD crashed, I installed the W10 update over W7 original. Now I have the problem that my machine heats up (the fan starts to work too soon comparing to my previous installation before the ssd crash), and the OS crashes too and reboots. I updated completely the OS. What I’m doing badly? Do I have to use some special tape between the new SSD and the asus cover?

  5. Hi, thanks for the information. I’m going to attempt this fix soon, I just have a question (which I think has been answered, but I would like some clarification if possible).

    My SSD is dead and was running Win7. When I upgrade my UX31E using your method will I need to have a bootable USB of (probably) Win10? I’m assuming without the USB drive, I would just have a “shell” of a computer.

    1. Sorry, I didn’t get any email notifiaction about new comments. Did you do the upgrade. Yes, with the (blank) new disk you will not have windows, therefore you will have “blank” pc.

  6. Hello All,
    I would really appreciate all your help with the issue I am having on my ux31a Asus laptop.
    Someone said somewhere that you can’t upgrade the sysboard in order to upgrade RAM from 4GB to 8GB of RAM and I have just done that, however I purchased a board from ebay and Video works fine, CPU temperature ranges between 45-50c, but I am having issues with the fan as it never turns off.
    I tried it with WIN10 pro and Win7Pro and in both instances the fan wouldn’t quiet down. After Win10 installation I upgraded bios from 216 to 219 and I really thought that will fix it but it didn’t. The board is immaculately clean, and looks never used, and I am not having any crashes, besides the fan being on all the time and it is extremely loud. This is a fine laptop and very light and I don’t have plans to part with it at least not anytime soon. Please help me if in any way you can, I would appreciate it. Thanks.

      1. Hi,
        I do have an 8GB ASUS UX31A so the do exist! I bought it from a countrywide electronics chain in Sweden.
        I plan to update my SSD with a Samsung EVO 860 250GB SATA m.2 SSD drive.
        Has anyone tried to verify if it is a heat problem with the SDD by running the ASUS with open cover or something?
        Thanks for all the super info!

    1. Ed, I hope this somehow gets to you. Could you please share some more info regarding the board you bought? What board, where did you get it? Did you manage to find a solution regarding the fan?

  7. Ed, I hope this somehow gets to you. Could you please share some more info regarding the board you bought? What board, where did you get it? Did you manage to find a solution regarding the fan?

  8. Hello,

    The SSD on son’s UX31A finally gave up the ghost.
    What is the recommended adapter nowadays?

    Thank you!

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