Delidded my i7-3770K, loaded temperatures drop by 20°C at 4.7GHz

Discussion in 'CPUs and Overclocking' started by Idontcare, Aug 3, 2012.

  1. Idontcare

    Idontcare Elite Member

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    They definitely get binned before even getting packaged, otherwise they'd be wasting lots of packaging capacity and expenses.

    Also, remember they have a special new TIM for Devil's Canyon that they aren't using (supposedly) on the rest of their "Haswell refresh" SKUs.

    If they can solder the Haswell-EP chips, and have a special production process for Devil's Canyon to use a new and improved TIM, then they can surely solder Devil's Canyon (or any of the 'K' SKUs) as well for the OC'ers and enthusiasts while retaining their cheaper TIM paste production process for the non-overclockable SKUs.
     
  2. dqniel

    dqniel Senior member

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    I'm going to be updating this again, after a long, long delay. Hopefully I'll get to it tonight or tomorrow night. If my gut instincts are right, it'll show that the CL Liquid Pro has remained stable for over two years. I have the same case, motherboard, HS, fans, and so forth- so the only variable that should have significantly changed is time. At a glance, my temperatures remain good.

    If I do the tests and they come back with a result that I'm happy with, it'll be on to the next project- doing the exact same procedure, but with a 4690k in a Rosewill Legacy U3 SFF case.
     
  3. dqniel

    dqniel Senior member

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    And the update, if anybody still cares about this :p

    I know the 3570k is old news, but I assume the same lesson could be applied to, say, the 4690k.

    Results:

    After lapping IHS and HSF base down to the copper and using Coollaboratory Liquid Ultra in all areas of contact:
    (10/2/2012)

    Ambient temp - 21C
    3570K max temps after Prime "blend" for 30 minutes - 52C, 61C, 56C, 59C

    *2 Years Later...*

    (10/15/2014)

    Ambient temp - 19C
    3570K max temps after Prime "blend" for 30 minutes - 51C, 59C, 55C, 58C


    Conclusion- CL Liquid Ultra seems damn stable for this application. 2 years later, the rise above ambient is right around 0-1C within the original readings from 2012.

    I can't recommend this hard to use, but incredibly effective, goop enough.
     
    #1078 dqniel, Oct 15, 2014
    Last edited: Feb 23, 2015
  4. Homeles

    Homeles Platinum Member

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    Wow, thanks for the update! I'll probably use it for my next build.
     
  5. Mussels

    Mussels Junior Member

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    Normally lurk at other forums around the interwebs, but this seemed like the best delidding thread around for IB chips.

    9-15C drop using an old tube of MX-2 under the IHS, as i ran out of MX-4 at a bad time.

    Thanks for the guide and the insanely detailed posts Idontcare - this thread is an information goldmine.

    edit: one thing i noticed is that one of my temp sensors (via realtemp) is wonky, and about 7C cooler in idle and 7C hotter at load than the others. Maybe this is why 'YMMV' applied so greatly - maybe it was the sensors varying between chips, causing such varying readings?
     
    #1080 Mussels, Jun 16, 2016
    Last edited: Jun 16, 2016
  6. ehume

    ehume Golden Member

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    Not only sensors, but the cores themselves can vary in their temps. Compare the inner ones with the outer ones, for example.
     
  7. Mussels

    Mussels Junior Member

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    in my case 1 is in the middle, 2 is always too hot/cold while 3&4 give the exact same readings.

    my brother had this chip for years and couldnt get past 3.2GHz due to heat, now i'm sitting pretty at 3.4 with plenty of room to spare - especially if i get the CL ultra under the IHS - did anyone ever have long term negative effects from that? still reading the entirety of the thread, takes time.
     
  8. crashtech

    crashtech Diamond Member

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    Relidding and reinstalling the CPU with the stock LGA retention mechanism results in extremely high pressure being exerted on the die. This is why pump out occurs. An ideal relidding would involve a precise shim around the perimeter of the IHS that would help bear the load of the retention mechanism which must insure contact to the 1155 lands in the array. Otherwise you have PCB flex and pump out, the former only became noticed with Skylake's thinner PCB.
     
  9. BonzaiDuck

    BonzaiDuck Lifer

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    There is an acceptable error range in the Tj sensors. I'm not even sure if the range has changed much between chip generations. Add to that the variation on core loading under stress, and temperatures on my old Sandy Bridge processor will show a range of 10C degrees under load.

    Not sure how surprised I was that this thread has been rejuvenated with posts today. But I've been considering the possibility of buying my i7-6700K processor from Silicon Lottery and paying them to do the de-lid, CLU application and re-lid.

    However, between Ivy Bridge and Haswell or Skylake, the stock Intel TIM formulation has been improved with a "new polymer compound." So de-lidding and re-lidding an IB-K with CLU may show an improvement of 20C degrees, but doing the same on the newer generations of processors may show a more modest improvement.

    Of course, I'm not yet in a position to know, and I'm mostly guessing about this. Anyone have data from a Skylake delid-relid with CLU?
     
  10. Mussels

    Mussels Junior Member

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    cant speak for delidding a skylake, but my brother just bought a 6700K and clocked it to 4.5GHz, and he's rather disapointed that its <25% faster than this 3770k he gave me (and i delidded), let alone my old 2500k at 4.9ghz.

    It's awesome and sad at the same time, how these K chips have held their own for so many years.


    40 pages in and a year later, this advice is still valuable to some. Thank for testing over such a long period of time.
     
    #1085 Mussels, Jun 16, 2016
    Last edited: Jun 17, 2016
  11. xdownsetx

    xdownsetx Junior Member

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    It looks like Photobucket is holding all of your hard work hostage. This is great reference material for dispelling the myths regarding bad TIM but unfortunately all of the information is locked up now.

    (Sorry to dredge up an old post)