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Delidded the 7960X - just a little difference ( -9 to -14 degrees )

Discussion in 'CPUs' started by Pooh, Jun 14, 2018.

  1. Silent_Scone

    Capodecina

    Joined: Sep 5, 2011

    Posts: 12,022

    Location: Surrey

    You'd have to show something to back that up because that's not really true (at all, in fact).


    1. Yes, the CPU will run hotter, however the TIM through thermal cycling won't degrade or crack nearly as quickly. In fact, it's only likely to do so if using sub zero cooling, which is why a much, much thicker compound is used for benching when delidding the CPU. If a soldered CPU suffers micro cracking along the length of the die, depending on the size of the fracture you may as well not have a heat spreader at all.

    2. Yes, obviously using a compound is cheaper than sourcing gold and indium, both rare materials. However, this isn't the only reason no matter how many times it's speculated. It's a mixture of time, money, environmental footprint and longevity.

    3. Using a different thermal compound doesn't change anything to do with overclocking settings. Scaling rules, VID and board partners aren't privy to the thermal compound used, that's just a silly thing to say.

    You just have to be aware of the bigger picture here. We understand the benefits here, but we're a small fraction of users, and ultimately there are real legitimate reasons for all of it. Just don't knock Intel about so much for it. If you really knew better, you'd be on an 8 figure salary.
     
    Last edited: Jul 4, 2018
  2. Pooh

    Hitman

    Joined: Oct 22, 2006

    Posts: 613

    Fitted it tonight, if anything the temps are a bit worse. Hey Ho. I'll pop the original back on tomorrow.

    Nothing ventured.....
     
  3. Skorpion

    Gangster

    Joined: Jun 5, 2010

    Posts: 479

    Location: Lincolnshire

    Pooh, could you expand a bit on your post with info on room temps, cooler / block used, paste etc please ?

    Cheers :)
     
  4. Pooh

    Hitman

    Joined: Oct 22, 2006

    Posts: 613

    Hi mate

    I'll do my best
    Room temp was the same as pre swapping the Intel IHS for the copper one. Don't know what the actual temp was, quite warm, but it was a constant.

    All other factors the same, paste, liquid metal IHS to the die and Arctic Silver 5 IHS to the waterblock which is a nickel one ( can't remember the model )

    The biggest issue I had was that despite resetting the new IHS twice I could not get core 15 covered properly and it was scaling up to 100C when I ran Cinebench with all the cores set to 4.1. Looks like there was an issue with the milling of the copper IHS or something.

    I took the copper one off and put the standard IHS back on after a good clean up of all the pastes and liquid metal, so pretty much a fresh start.

    I made one change this time and used liquid metal between the IHS and the waterblock ( very carefully I hasten to add ) so it's now got liquid metal all the way through the interfaces.

    Have to say it's now looking very good.

    As a first pass I whacked the multiplier to 44 across all cores and left everything else unchanged and the temps were good. Room ambient is 29C so a bit warm.

    Next job is to start per core overclocking which is a laborious pain in the ass task but the best way to squeeze the CPU to it's best performance while maintaining a decent thermal profile.

    [​IMG]
     
  5. Skorpion

    Gangster

    Joined: Jun 5, 2010

    Posts: 479

    Location: Lincolnshire

    What water block are you running with ?
     
  6. Pooh

    Hitman

    Joined: Oct 22, 2006

    Posts: 613

    Not sure as I've had it for a few years and can't remember the name.
     
  7. Skorpion

    Gangster

    Joined: Jun 5, 2010

    Posts: 479

    Location: Lincolnshire

    Ahh ok fella, cheers anyway.
     
  8. Pooh

    Hitman

    Joined: Oct 22, 2006

    Posts: 613

    Getting there

    Most cores at 4.4 with a few a 4.5, edging the voltages down now.

    Temps not looking too bad

    [​IMG]
     
  9. Phixsator

    Mobster

    Joined: Oct 10, 2012

    Posts: 2,865

    Intel are like Bethesda.. why bother when your users fix the problems for you.
     
  10. Silent_Scone

    Capodecina

    Joined: Sep 5, 2011

    Posts: 12,022

    Location: Surrey

    Stop using it for encoding and you'll be able to ramp it higher :p (Jesting, obviously).

    My 7940X would do 4.8 @ 1.23v undelidded non AVX
     
  11. Pooh

    Hitman

    Joined: Oct 22, 2006

    Posts: 613

    Sounds like a sweet chip. Not sure mine is quite at the level.
     
  12. Pooh

    Hitman

    Joined: Oct 22, 2006

    Posts: 613

    Think that will do for the night

    9 cores at 4.5 and the rest at 4.4 with temps under control.

    [​IMG]
     
  13. Silent_Scone

    Capodecina

    Joined: Sep 5, 2011

    Posts: 12,022

    Location: Surrey

    Just depends on your workload more than anything. Although, yes, not all chips will do that
     
  14. Pooh

    Hitman

    Joined: Oct 22, 2006

    Posts: 613

    Think I'm pretty much done now.
    Running at 4.6 across all cores with manageable volts and temps. I found out the AVX offsets in the bios were a bit too small so was resulting in crazy volts & temps to get it stable. Bumped them up a couple of clicks, dropped down the CPU voltage offset to +0.010 and everyone seems to be happy.

    [​IMG]
     
  15. blaineoliver

    Hitman

    Joined: Jul 29, 2009

    Posts: 669

    Location: Near London

    Next job is to do some die lapping for a further few percent temperature drop. De8auer has a video on it.
     
  16. Pooh

    Hitman

    Joined: Oct 22, 2006

    Posts: 613

    I've lapped processor dies in the past. No real need to do it in this one. I'm happy with the current performance. Can't be a***d pulling the rig apart again. :D