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4790k low voltage/high temps

Discussion in 'Processors and motherboards Intel' started by slimmy427, Jan 23, 2018.

  1. slimmy427

    slimmy427 Active Member

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    GPU:
    MSI 1070 Gaming
    I am currently finding myself frustrated with my personal expectations of my CPU. My issue is that the 4790k has been able to achieve a high OC with relative low voltage but, seems to be way out of the realm of normal heat dissipation. In comparison to these results...it looks like something may be wrong with my set up http://www.guru3d.com/articles-pages/corsair-h100i-gtx-review,11.html

    The following are my results:
    Corsair H100i v2 (2 fan push / horizontal radiator)
    Asrock z97 extreme4
    4790k core=4.8 @ 1.25v (vcore up to 1.27 in HM)
    uncore=4.4 @ 1.10 (cache v up to 1.12 in HM)
    gskill 2123 9-11-10 1.65v 4x4gb
    Seasonic 750w gold
    MSI gtx 1070 gaming
    2032mhz @ 1.043v

    CPU has been delidded with a 18 degree improvement.
    CPU temp reaches 76c with prime 210 and 82c with x264. This is far warmer then the H100i review.
    idles at 27-28 with c state on. C state off is 34-35
    Socket and core temps seem balanced. no more then an 8c difference between cores.
    GPU never goes over 56c

    Any insight or advice would be much appreciated. I am currently at work but, after I could upload screen shot of HWmonitor.
     
  2. Agent-A01

    Agent-A01 Ancient Guru

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    GPU:
    1080Ti H20
    You need to use Liquid metal TIM, paint both the die and the heatspreader(i don't mean the part that contact h100i, the opposide side)to ensure perfect contact.
    Assuming you are using regular paste.
     
    slimmy427 likes this.
  3. slimmy427

    slimmy427 Active Member

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    GPU:
    MSI 1070 Gaming
    Thanks for the response

    Its been awhile but, I think I may have only applied coolaboratory ultra to the die. I then used mx4 between the cooler and spreader. I did see an 18 degree improvement over stock TIM.

    One other thing I had to do. The Asrock motherboard was a bit thinner, so I had to put spacers on the backplate to ensure proper contact...as I was running out of threads after the delid.

    Do you think that the mother board may be overvolting? No matter what I adjust in the bios, I can't get the vcore and cache to not have .02 volts added after boot.
     
  4. Agent-A01

    Agent-A01 Ancient Guru

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    GPU:
    1080Ti H20
    You must apply to both die and the heatspreader, otherwise it'll never be the best contact; overtime this becomes more of an issue.

    Are you using override or adaptive for vcore?
     
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  5. GroinShooter

    GroinShooter Master Guru

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    GPU:
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    Hm I've done my share of delids and never seen that being an issue, how long of a period you talking about? I've always put liquid metal only on the die, not under ihs. Is it a big deal?
     
  6. slimmy427

    slimmy427 Active Member

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    GPU:
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    I have resorted to using override. Never was able to get it to work. For some reason asrock's adaptive is bugged, same goes for overclocking only applying to the turbo clock.

    As far as temps go and the results in the review I linked....4.6 @ 1.3v w/o a delid hitting 68c. Then there is my 4790k 4.8 @ 1.27v (bios @ 1.25) with improved delid (before was low to mid 90s) temps hitting 76c in the same prime 2.10 benchmark.

    I think I may have a small amount of liquid metal left, might be enough to add to, at best.
     
  7. Agent-A01

    Agent-A01 Ancient Guru

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    GPU:
    1080Ti H20
    I've had a couple of delids where i did die only, each time temps were not as nice as the first time i tested it. Seems like a gradual decrease over time.
    3rd chip i tried(4790k) on both sides and it's temps have stayed the same as day 1, been about a year or so.

    You'll see others that do it for a service like the silicon lottery strongly recommend you to apply to both sides.
    Does not matter on normal TIM of course.

    Make sure you are on latest bios of course.

    The adaptive for core voltage is the best way to go; adaptive for cache voltage is buggy.
     
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  8. The Goose

    The Goose Ancient Guru

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    GPU:
    Evga 1080FTW
    4.8 with a 4790k....what are you expecting, all though its a cracking chip(had one myself) you might aswell stick to 4.6 unless your trying to murder the poor thing, also i`d suggest full water cooling not aio for cooling at that frequency.
     
  9. slimmy427

    slimmy427 Active Member

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    GPU:
    MSI 1070 Gaming
    Thanks for the tip with the cache voltage. I will go back and see if I can figure out the adaptive for core.

    My board does come with 2 bios. A-that I never updated (1.3) and B-which is latest release (2.5). Sadly both bios perform almost identical in my testing.

    Thankfully, I am not having stability issues at 4.8...actually managed to lower voltage to 1.24 today. Ran stable for a hour but, again my temps didn't drop. It looks like you are on to something with applying LM to both sides. Seems I will have to get over the temps or get out the coolabs ultra. Temps aren't unsafe...during gaming I'd be unfortunate to see over 64c. Might ride it for a few more months and watch the progression. Then decide to tear back into the tower.

    Thanks for the insight!
     
  10. Agent-A01

    Agent-A01 Ancient Guru

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    GPU:
    1080Ti H20
    If you are out of it; get thermal grizzly LM, it's a bit better.
     
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  11. MaCk0y

    MaCk0y Master Guru

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    GPU:
    MSI R9 390
    4.8 at 1.25v is pretty impressive. I need 1.35v for 4.7GHz on 4690K. So the radiator is mounted at the top since you said horizontal? Did you do intake or outtake fans? Using same AIO.
     
  12. insp1re2600

    insp1re2600 Master Guru

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    GPU:
    EVGA FTW3 1080Ti
    Get some new liquid metal and make sure you only use a tiny amount, I bought a 3770k which was pre delidded and redid it, as temps hit 100 on prime, now they never go above 50 degrees with fresh liquid ultra.
     
  13. Cryengine

    Cryengine Member Guru

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    GPU:
    Strix 1080 Ti oc
    Hi try to lower your CPU PLL OC Voltage in bios i am stable with 1.13 you may be stable at lower value, with my settings i gained about 20°c at load.
     
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  14. slimmy427

    slimmy427 Active Member

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    GPU:
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    Today I decided to take the lid off again...in hind sight I wish I would have taken pictures. The liquid metal I used was almost alkalized completely. Over the majority of the chip it was a chalky residue while what little "liquid" was left had pooled around the edges. My temps kept getting worse and I kept lowering the clock to suit. I was hitting 90c at 1.18volts @ 4.7. After taking your advice seriously :) I have fixed the problem.

    I reapplied the LM and included a lite layer on the IHS. I also let the Lid on lose this time in case I needed to reapply down the road. I am now seeing 60c at 1.18v @ 4.7. It was certainly worth tearing it all apart again.

    Thank you guys for all you help and suggestions. If it begins to fail again I will purchase some of the suggested Grizzly
     
  15. slimmy427

    slimmy427 Active Member

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    GPU:
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    Have 4 intake fans. 2 in front and 2 on top with the rad. All filtered and then use one exhaust fan in rear
     

  16. DAW40

    DAW40 Master Guru

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    GPU:
    EVGA 1060 6GB
    Those are high temps for your setup. Open the side door if you want it to cool down a notch or two.
     

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