Question on my Threadripper 2950X temperature.

Discussion in 'Overclocking & Cooling' started by Navilor, Jan 28, 2019.

  1. Navilor

    Navilor Limp Gawd

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    Because I encode a ton of video, sometimes using Sony Vegas with the Neat Video plugin but more often via FFmpeg, I decided that I needed to replace my six year old Core-i7 3770k (overclocked to 4.2Ghs at stock voltage) and get an AMD Threadripper. I chose the 2950X as Windows has scheduling issues with the the 2990wx.

    I am using a Noctua NH-U14S TR4-SP3 Cooler. I am using the thermal paste that came with it:
    https://www.amazon.com/gp/product/B074DX2SX7/

    I have a push pull setup with two Noctua NF-A15 HS-PWM chromax fans.
    https://www.amazon.com/gp/product/B07654B9MR/

    The article below says that the (Tdie) value for CPU temperature is the one that a person should look at, especially if you are running an AMD Threadripper.
    https://www.guru3d.com/articles-pages/amd-ryzen-threadripper-2950x-review,8.html

    From the article:
    The Tdie value that is reported in the image below is 27C (it is 26C as I type this) when it is idle. Maximum temperature that I have seen on my computer is 46.5C (as shown in the screenshot below). The temperature in my house is 66F or 18.8889C.

    27C Tdie - 10C offset == 18C.

    Apparently my CPU idle temperature is slightly below room temperature.

    That can't be right, right?

    Below is a link to my full build.
    https://pcpartpicker.com/user/Navilor/saved/#view=JbBdXL

    HW-Info.png
     
  2. elite.mafia

    elite.mafia Broke Back [H]

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    I think you misread that article.

    Also if you look at that chart, your CPU has a tCTL offset of 27c, so its equal to the tDie value + 27c
     
    Last edited: Jan 28, 2019
  3. Navilor

    Navilor Limp Gawd

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    Thank you for the info. I had a rectal cranial inversion happen while I was posting my original question, but I sorted it out.

    I looked at this post for the the then new Ryzen CPUs.
    https://community.amd.com/community/gaming/blog/2017/03/13/amd-ryzen-community-update

    This is what gave me the proverbial clue.
    They state that (tCTL) - (tCTL offset policy of 20C) == True Junction Temp or Tdie for their non-Threadripper Ryzen products. My Tdie value on my Threadripper is (tCTL value of 53.3) - (tCTL offset policy of 27C) which means that my CPU is actually at 26.3C (79.34F) which matches Tdie value. My house is at 65F so I am 14.34F above room temperature.

    Thank you for your patience while I got my head out of my ass.
     
  4. elite.mafia

    elite.mafia Broke Back [H]

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    Well I hope the doctors were able to successfully remove your cranium from your rectum. lol
     
    Navilor likes this.
  5. Navilor

    Navilor Limp Gawd

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    Self surgery. No doctor required.