Intel's 8th Generation Core Family - Coffee Lake (LGA 1151, 6C/12T)

Discussion in 'Intel Processors' started by -Sweeper_, Apr 19, 2017.

Where do you expect Core i7-8700K's Turbo to land?

Poll closed Jul 25, 2017.
  1. 3.8/3.9 GHz

    0 vote(s)
    0.0%
  2. 4.0/4.1 GHz

    3 vote(s)
    23.1%
  3. 4.2/4.3 GHz

    6 vote(s)
    46.2%
  4. 4.4/4.5 GHz

    3 vote(s)
    23.1%
  5. 4.6/4.7 GHz

    1 vote(s)
    7.7%
  1. N4CR

    N4CR 2[H]4U

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    Point is, it was not innacurate at all, you're just acting butthurt now.
    LOL and you changed the graph after the assblasting. Nice one bro!
     
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  2. Shintai

    Shintai [H]ardness Supreme

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    I changed the graph to something that showed value as well.

    I dont see you documenting your claim funny enough and I think we all know why :)

    And I guess you dont know how small the net contribution really is for the countries. Its pennies in reality.

    German federal budget is around 1250B€, give or take. Their net contribution is 7½B€. Same applies for the rest. Its a decimal number in the budgets. And then we dont even talk about any benefits that affects elsewhere than direct contributions or receiving.
     
    Last edited: Dec 4, 2017 at 7:12 AM
  3. oleNBR

    oleNBR Limp Gawd

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    and juanrga
    https://cdn.wccftech.com/wp-content...op-Client-Roadmap-HEDT-Mainstream-Entry_1.jpg

    where is the 10nm+ 8 cores damn it. intel better release that 8 core either on 10nm+ or 14nm++ next yr or i'll be choked. i skipped this yr's 6cores because laptop cooling just not good enough for it, and no optane m.2 SSDs yet (non cache module). the wait to next year better be worth it.
     
  4. Hagrid

    Hagrid Kyle's Boo

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    So will they have actual product or will it be a paper launch?
     
  5. Dayman

    Dayman Limp Gawd

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    One thing I noticed - "95w 2 Core K", overclockable pentiums inbound?
     
  6. TaintedSquirrel

    TaintedSquirrel [H]ardForum Junkie

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    All done. A few things I learned:
    1. Silicone adhesive is messy.
    2. Tape down the CPU before you attempt to scrape off the old adhesive/paste.
    3. Applying and spreading LM is the easiest part.

    I used Conductonaut (under IHS) + Kryonaut (above IHS)

    I'll post back in a few hours once it's done drying.

    EDIT: Average load temps at 5 GHz down about 10-15C, from the mid-70's to low 60's.
    Peak temp down precisely 13C.

    Idle temps are unchanged, surprisingly.

     
    Last edited: Dec 4, 2017 at 7:58 PM
  7. Dayman

    Dayman Limp Gawd

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    Rumor has it that CFL U is succeeded by Whiskey lake U and not Icelake U or Cannon Lake U.

    Whiskey lake U is apparently a 4+2 part, production starting ww27-34'18.

    The person that posted it are apparently one of the more reliable posters.

    [​IMG]

    Source


    EDIT: Seems to be CFL U with 4+2 instead of 4+3e.
     
    Last edited: Dec 5, 2017 at 4:50 PM
  8. tangoseal

    tangoseal [H]ardness Supreme

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    I think on coffee lake im just gonna direct die cool. F the lid.
     
  9. entropism

    entropism 2[H]4U

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    Picked up my 8700K on Sunday along with a gigabyte Gaming 7. It's barely stable at 4.9Ghz, and it's hot as fuck with a Mugen 5 on it. 85-90c under Realbench stresstests. Think I might RMA this back to microcenter when they get new stock.

    Also... My Mugen 5 is kind of... Sagging? It's really odd. https://imgur.com/a/K2Ji3 Never seen a heatsink do this, but it's on pretty solid.

    Now I just need to find someone with a delid tool in NJ. I'd hate to pay $50 and buy my own for a one-off delid.
     
  10. Shintai

    Shintai [H]ardness Supreme

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    Whiskey Lake doesn't replace Icelake-U/H, it replaces KBL-R.
     
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  11. oleNBR

    oleNBR Limp Gawd

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    so we not getting icelake in 2018? that latest intel slide shows cascade lake end of 2018 but nothing about CFLS being replaced by icelake 10nm+ in 2018.
     
  12. Shintai

    Shintai [H]ardness Supreme

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    Mobile or desktop? Quite the difference.
     
  13. Dayman

    Dayman Limp Gawd

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    Yeah I learnt that and forgot to edit that part in. CFL U is the replacement to KBL 2+ 3e, WHL U is the replacement of KBL R
     
  14. oleNBR

    oleNBR Limp Gawd

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  15. Shintai

    Shintai [H]ardness Supreme

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  16. Speedeu4ia

    Speedeu4ia Limp Gawd

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    Gigabyte tends to set auto voltage to 1.34v on z170/z270 so that could be why its hot
     
  17. DJS4000

    DJS4000 Gawd

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    there are some news on the z370-drama-front. apparently some guys in poland managed to get an i3-8350k running on a z170 board. they used a custom BIOS which runs with everything except the IGP.

    source in polish.
     

    Attached Files:

  18. PhaseNoise

    PhaseNoise Gawd

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    I think it's safe to assume an ie-8350k will not stress much in the system the same way an 8700k does. I don't find this terribly surprising at all.
     
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  19. Dayman

    Dayman Limp Gawd

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    According to this guy 6 core don't seem to work?
     
  20. Shintai

    Shintai [H]ardness Supreme

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    The drama stopped when they only got a quad to work.
     
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  21. TaintedSquirrel

    TaintedSquirrel [H]ardForum Junkie

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    Why ia that a problem, isn't the pin layout the same?
     
  22. DJS4000

    DJS4000 Gawd

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    intel's excuse has been that the pin layout changed for z370. from my understanding it was never about "stressing the system". besides, the 8th gen i3/i5/i7 chips have comparable thermal envelopes. at stock at least.
     
  23. Hagrid

    Hagrid Kyle's Boo

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    Inconceivable! Maybe it was easier to make more money with a new board? :)

    Reading about it states it works, but since the bios is custom there are things that don't work.
     
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  24. PhaseNoise

    PhaseNoise Gawd

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    Pins which were reserved are now defined to have grounds and power supplied. So what the modder actually proved is they are used - only the i3 worked, and not with the IGP on.

    Comparable thermal envelopes is not the same as peak current, or ability to clock even remotely above stock.
     
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  25. Frito11

    Frito11 Limp Gawd

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    it did change, mostly they activated reserved power pins to expand power delivery but they also removed a few non power related pins and turned them into power input.

    [​IMG]

    more over a big issue is some high end overclocking motherboards were already using some of these "rsvd" (reserved) pins for added power delivery and its been said that if one was to put coffee lake into one of these better z170/270 mobos it would actually fry the CPU.

    lastly the hurdle which is artificial and likely what those people that got the quad core to run in z170 did is they disabled intel's management engine via the bios (this is same hack that enabled non K bclk overclock on z170 motherboards)

    the big issue with the IME hack is you loose IGPU, AVX, and apparently with the 8350k they lost the primary x16 PCI-E slot as well that is probably pin missmatch related IMHO or just some funky bios quirk from the hack.

    EDIT: on the "power envelope" thing I really wish people would get it through their thick skulls that TDP ratings are simply for OEM use for stock operation on cooling solutions. its a meaningless figure and your tripping if you think that a 8350k uses the same power as a 8600k/8700k even at stock operation. more cores more power period, not to mention they are also clocked even higher out of the box to boot along with that.
     
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  26. oleNBR

    oleNBR Limp Gawd

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    you have idea when? share the wisdom!!
     
  27. entropism

    entropism 2[H]4U

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    I have the voltage set manually though. Odd stuff.
     
  28. Shintai

    Shintai [H]ardness Supreme

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    Partners got them and did since september.
     
  29. kalston

    kalston Gawd

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  30. Nightfire

    Nightfire Limp Gawd

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    Care to elaborate? How does this predict when ICL comes out?
     
  31. Shintai

    Shintai [H]ardness Supreme

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    Due to the QA period and platform testing and development from 3rd parties.
     
  32. Factum

    Factum Gawd

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    If you are a big customer, you always get CPU's before release...for validation, testing ect.
    It makes it quite simple to predict when things will get release, based on the dates you get new "beta" servers form vendors.
    Many times when I read CPU-rumors on the web I chuckle...because most often that not...I have the same hardware at hand...way before any release date or consumer variants are out for sale.
     
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  33. RPGWiZaRD

    RPGWiZaRD Gawd

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    I probably recieved the worst possible 8600K sample yet, 4.8GHz would require north 1.35v to be stable, maybe ~1.37~1.38v or so and the temps are hot as such on air borderline acceptable without delid (cores hitting 100C with avx and 90~92C AVX-less). I settled for 4.7GHz 1.31v (my luck of silicone draw as usual) and hitting temps around 80C max AVX-less stress testing. Here's hoping the upcoming 8 core versions would be Z370 compatible so I could upgrade quickly.
     
  34. TaintedSquirrel

    TaintedSquirrel [H]ardForum Junkie

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    Where did you buy it from? You could always replace it, if you're feeling morally dubious.
     
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  35. Speedeu4ia

    Speedeu4ia Limp Gawd

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    Hmm silicon lottery said 98% could do 4.9. you either got one of the worst or it doesn't like your settings. Have you tried it with low ram speed. What test are you using for stability?
     
  36. RPGWiZaRD

    RPGWiZaRD Gawd

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    I've tried several different tests, Prime95, LinX, Aida64. Even in Aida64 I tend to get comp freezing when running for a while at 4.8GHz or the temp starting to get near to throttle cpu level. I did start out with lose ram settings, I've got the G.Skill Trident Z 3200 CL14 kit. There's a big difference in stability between 4.7 -> 4.8GHz. 4.7GHz 1.31v will run as long as I can withstand testing but going up to 4.8GHz at 1.31v which already would be on the very bad sample of silicon lottery draw side, the computer freezes after 1 sec of starting prime95. It more commonly just freezes than gives any BSODs. 1.35v will run a couple of mins perhaps.

    I suspect something is very fishy about the cpu cooler or the the CPU IHS though.... because it doesn't seem truly secure somehow. the Cooler/fans seems to vibrate too much (putting my hand on the heatsink and I can feel the whole thing wobblying a bit). It's a Phanteks TH-TC14PE that I also used for the last build (I bought a new same cooler due how happy I've been with it and being cheaper than the Noctua over here with similar performance, was planning to sell my old stuff to a workmate so).

    What's more the CPU cooler doesn't get hot which again is odd, even the exhaust air is almost as cool as in front of the case, only if trying to reach with the fingers underneath the heatsinks I start feeling slight bit of heat, dafuq? Again if there were some serious contact issues, I doubt even 4.7GHz would be possible though? And with stress test doesn't get past 80C after 30 mins+? It's odd though. Just now I'm testing prime95, temps around 75C and putting my hand inside the case just behind the cooler and the air is very cool.... I did try reseat, reapply tim once already though. Screws tightened as far as they go.

    Perhaps I should install my older Phanteks cooler that I know for sure works normal just to see if there's any difference? Phanteks does state Socket 1151 compatible.
     
    Last edited: Dec 7, 2017 at 3:00 PM
  37. Speedeu4ia

    Speedeu4ia Limp Gawd

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    Did you start with low ram speed? I've seen at least for z270 that over 3000mhz ram system agent and vicco voltage need to be raised.
     
  38. RPGWiZaRD

    RPGWiZaRD Gawd

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    Yes I did start with very low ram speed at first, DDR4-2100 or something like that, now I tested just to be sure 2600 and no change in stability. 1.31 4.8GHz almost immediatly freezes (stuttering observed in mouse pointer already when getting into windows). 1.33v 30 sec ~ 1 min prime95 stable, 1.35v a couple of minutes stable, maybe 5~10 min or so. Not worth pushing this sample past 4.7GHz it seems, at least there I can keep things cool n quiet. I've never experienced that much of an abrupt stability scaling from a 100MHz clock jump before.

    I did go through all other volt settings one by one pushing them up 3-4 steps one by one at 4.8GHz at a setting that linX crashed roughly at the same time (within 1 min and saw no increase in stability).
     
    Last edited: Dec 7, 2017 at 3:38 PM
  39. Nightfire

    Nightfire Limp Gawd

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    Let's not get this into people's heads. Must everyone return their cpu because it won't get 5.2 GHZ at 1.3v? You can' tell me that doing this isn't jacking up the price for everyone else do to logistics and having to sell an opened product now.