Intel Core i9-9900k 8c/16t, i7-9700K 8c/8t, i7-9600k 6c/6t 2nd Gen Coffee Lake CPU's + Z390

Discussion in 'Hardware Components and Aftermarket Upgrades' started by hmscott, Nov 27, 2017.

  1. hmscott

    hmscott Notebook Nobel Laureate

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    I think I'd wait for a larger pool of Max OC results of OC'd 9900k's before deciding to waste time delidding and grinding, as even though the temps went down he didn't get any higher OC than before - der8auer said this was a bad sample 9900k which only reached 4.8ghz all core, but he also said he checked 8 9900k's (01:50) - so what were the highest OC's / voltages for all those samples?

    Intel seems to have "jumped the shark" with the 9900k / 9600k thick die - I wouldn't have thought that it is thicker to support STIM - it could have been another manufacturering choice such as the process equipment Intel were forced to use to expand manufacturing.

    I wonder if the paper launch quantities of the 9900k would allow Intel to pull back and re-release the 9900k with thinner dies and LM TIM later this year or next year before ramping up for full production?
     
    Last edited: Oct 19, 2018
  2. Talon

    Talon Notebook Virtuoso

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    So far looks good to me. :)
     
  3. Dr. AMK

    Dr. AMK The Strategist

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    i9-9900K at -230 °C - LIQUID HELIUM


    i9-9900K Review & Delid: Solder vs. Paste, Game Streaming Benchmarks
     
  4. ajc9988

    ajc9988 Death by a thousand paper cuts

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    So, he was also talking about 4.8 and 4.9 OCs before delidding. He said he found 8C difference, and said per core difference of just delid and LM was 6-12C per core. He mentioned delidding prevented a situation of a single core spiking 5C then returning back.

    Now, I'm not recommending people grind for an extra 4-6C, as that also exposes the unguarded silicon to electron migration. NOT SOMETHING TO BE DONE LIGHTLY, needless to say the issues that can arise with uneven sanding, etc. But, there was a sizeable number concerned about Intel's solder, and it shows that those fears were well founded. Der8auer found 1-4C difference for delidding AMD CPUs. He found 8C on delidding Intel. But, Intel changed other aspects to go to solder, like the silicon layer thickness, using a 0.5mm solder layer (which, from what I've looked at, 0.1mm would give drastically more heat transfer with less thermal resistance). This temp drop is still half of what is seen with their other TIM, so that is something that is nice.

    Edit: @Dr. AMK - I ninja'd you. Check the prior page.
     
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  5. hmscott

    hmscott Notebook Nobel Laureate

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    Intel's HOT now!! ;)
    05onfire1_xp-articleLarge-v2.jpg
     
    Last edited: Oct 19, 2018
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  6. bennyg

    bennyg Notebook Deity

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    6 cores @ 4.5ghz = basically no difference except the 9900K is a few degrees cooler than stock 8700K
     
  7. ajc9988

    ajc9988 Death by a thousand paper cuts

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  8. ajc9988

    ajc9988 Death by a thousand paper cuts

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    Did you see the 13% more power than the 2950X at stock? Laughing so hard, makes me think that interview meme is coming back!

    Edit: 5.1GHz was hard to hit and required massive liquid cooling. So my 5.0-5.2GHz estimate seems to be about right (if you can cool it). 1.375V
     
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  9. Talon

    Talon Notebook Virtuoso

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    Looks like it gets warm but this thing absolutely beats on the 2700X at stock.
     
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  10. ajc9988

    ajc9988 Death by a thousand paper cuts

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    So long as you saw his part on cooling to get 5.0 or 5.1GHz.


    When overclocked to 5.1GHz, it consumed 299W while an OCed 2950X overclocked to 4.1GHz consumed 349W in blender.


    Hardware unboxed showed 5.1 failed on CLC AIO and 5.0 was pegged at 100C using a Corsair H100i, same with using Noctua NH D15
    a 360mm Open loop custom could do 5.1GHz at 98C
     
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