Coffee Lake 6 core, this August with z370 chipsets?

Discussion in 'Intel x86 CPUs and chipsets' started by AbRASiON, Apr 26, 2017.

  1. adamsleath

    adamsleath Member

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    much the same as yours
    might try lower volts than 1.35....obviously raising the temps..
    maybe llc=4 aswell

    although the clocks are varying the voltage is....not, ive read that using adaptive might adjust voltages....

    https://rog.asus.com/forum/showthread.php?98597-Prime-Z370-a-i7-8700k-Overclocking-guidance-please
    ie. this ---^

    have no idea what im doing :lol:
     
    Last edited: Feb 10, 2018
  2. hawks667

    hawks667 Member

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    I reckon a delid is on the cards......
     
  3. self_slaughter

    self_slaughter Member

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    Even at stock a delid is always on the cards with these things. :)

    I'm only in mount cotton if ya wanna pop over and take the lid off.
     
  4. adamsleath

    adamsleath Member

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    how much you get from a delid? 10, 15C ?
     
  5. self_slaughter

    self_slaughter Member

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    Something around there. Didn't look at the numbers much on mine, but it was enough to put an end to thermal throttling anyway.

    Still need to play with offset/adaptive voltages etc myself. Just running 1.28V constantly at the moment. Idles a bit rough temp wise, but stable at least.
     
  6. darkbastard

    darkbastard Member

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    It was easily worth 15c for me
     
  7. adamsleath

    adamsleath Member

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    ok

    ive set 1.29 V adaptive svid on mce off llc=6 4800mhz. good enough for me at this point. 80C under prime. 100%load.
     
    Last edited: Feb 10, 2018
  8. self_slaughter

    self_slaughter Member

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    hmm, the old adaptive vcore seems a bit fussy to get working. Something kept locking it to max voltage, but got it sorted eventually.
    Surprisingly doesn't make bugger all difference to my idle temps, but whatever. :p

    Now the system is more or less done, I can start measuring up and piecing together some water cooling. :)


    [​IMG]
     
  9. adamsleath

    adamsleath Member

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    yeh...dunno. still looking at it. voltages are at least varying... lowering manual voltage again.
    ----
    1.27 manual
    barely scraping 80C under prime

    1.216 droop under 100% load llc=5
    llc=6 basically no droop.
     
    Last edited: Feb 10, 2018
  10. self_slaughter

    self_slaughter Member

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    You have avx disabled or something?
    Great temps for an unopened chip on air if not.
     
  11. adamsleath

    adamsleath Member

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    avx probly off, check again. now back to adaptive and llc=3 much better variable voltages. lower idle temp

    the lower temp because 1.216 V under load

    dont see anywhere to disable avx ?

    ok adaptive llc=1 gives 1.232V under load. :D around 80C happy.
     
    Last edited: Feb 10, 2018
  12. self_slaughter

    self_slaughter Member

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    older versions of prime95 have avx disabled by default.
    1.232V at 4.8Ghz is gold if its stable.
    I had to crank mine up to around 1.28 @ 4.7 before prime would break past the 1hour mark
     
  13. adamsleath

    adamsleath Member

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    its current prime version.
    might not be truly stable though, with games etc.
    idling 32C
     
  14. self_slaughter

    self_slaughter Member

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    sounds like a nice chip you've got either way. :D

    To test with avx disabled in prime95 add "CpuSupportsAVX=0" to local.txt
     
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  15. MR CHILLED

    MR CHILLED D'oh!

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  16. self_slaughter

    self_slaughter Member

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    Since your chip is running so cool with avx loads at 4.8ghz, you could play with turning off avx in prime95 and pushing for 4.9/5.0Ghz at non avx loads.

    Ie. set multi to 50x and avx offset to 2 to run at 4.8Ghz with avx loads, and 5.0Ghz without.
    As AVX will bump your vcore by like 0.2V or something over whats set in bios.

    Probably explains why you are using LLC1 if you aren't taking into account the extra avx voltage. On my board llc1 droops like a mofo, 5 gets it pretty close to bios set vcore and llc6 overshoots the voltage.

    Then you can game at like 5Ghz, and if you encode a movie or something that uses AVX it will drop the clocks slightly to make up for the extra vcore it adds by using those instructions. :)

    I've started doing that myself. setting a -1 offset on the avx drops my load temps by like 15' during avx runs. No point flogging the chip out for 100Mhz...
     
    Last edited: Feb 10, 2018
  17. adamsleath

    adamsleath Member

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    yeah...but just going for lower temps really. im sure it will do 5 ghz. with -200mhz or whatever on avx... with adaptive set there is no manual voltage. it just does it itself. and i just take note of the load voltage...

    actually might try 5.0ghz with adaptive and no llc :lol:
    ---
    edit running prime adaptive with llc=1 --->1.248V actual...got 84C (max) @5 GHz no avx offset.
     
    Last edited: Feb 11, 2018
  18. self_slaughter

    self_slaughter Member

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    so jealous..... i always luck out on the silicon lottery. :p
    i think adaptive uses normal voltages until turbo kicks in, then uses your adaptive settings. avx will still add more vcore above whats set whenever it kicks in though regardless of manual/offset/adaptive etc.
    If you're getting like 84' with avx loads, under normal loads she'll be cool as a cucumber. lucky bastard. ahaha

    My chip takes a bootload of voltage to be stable at 4.7. Fortunately normal gaming use etc gets nowhere near the temps prime95 will push it to. Lot cooler at the moment, but even after gaming for a while temps haven't gone over 70' vs 80+ in prime.

    [​IMG]
     
    Last edited: Feb 11, 2018
  19. adamsleath

    adamsleath Member

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    i doubt theres much diff between our chips.

    but yeah its good to know that gaming etc wont stress out the cpu like prime smallfft...

    i havent run prime for 1 hour. ;) in the past ive just gamed until/if i get a crash then adjust clocks/volts afterwards.

    less than 70C is okydoky :thumbup:

    at 5 ghz my idle temp is 40C :(
    ---
    edit: got it down to 35c idle with 4900mhz llc=2 (edges up to 1.264V 100% load,but still 84c max ;)) :D settling on that.
     
    Last edited: Feb 11, 2018
  20. Supersize

    Supersize Member

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    You think your chips are bad.
    1.344v for 4.9Ghz OCCT Small Data Set stable, 4.8Ghz requires 1.30v.
    Can get away with a lot less if I don't bother with OCCT, but I like to know I'm 100% stable.

    There was a recent Asus BIOS update that fixes some of the Adaptive voltage inconsistencies.
    http://www.overclock.net/forum/26719689-post1361.html
     

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