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

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

  • 3.8/3.9 GHz

    Votes: 0 0.0%

  • 4.0/4.1 GHz

    Votes: 3 23.1%

  • 4.2/4.3 GHz

    Votes: 6 46.2%

  • 4.4/4.5 GHz

    Votes: 3 23.1%

  • 4.6/4.7 GHz

    Votes: 1 7.7%
  • Total voters
    13
  • Poll closed .
No.

KBL 7700Ks do 5.0 without even trying. 500Mhz per core/single thread diff is a significant drop IMO.
 
Cooling is likely going to be the limiting factor for CL clocks, imo...depending on the final TDP of course.
 
I dont really have the time to invest more than a H100iv2. Hopefully I can get ~4.7 on all 6 cores around that.
 
I think I'd be happy with something like 4.8 on all cores with decent temps. Sure, it's not 5ghz, but I'd sacrifice the 200mhz for the 2 extra cores (and IPC gains) over a 7700k all day.
 
Brahmzy said:
For you, yes.
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Lol for anyone. There're enough youtube videos showing a couple frames difference past 4.5 in games. However the temps and power consumption rise quite fast. Be realistic and not just cause "duh, moar Hz" junkie. Hz is a brute force and not always the best way to improve performance.
 
Raendor said:
And insignificant difference in real life usage.
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patently false. Any program will notice a scale-able difference especially single thread. Regular OS, browsing, PDFs, Office, Loadings, and so on. I notice a very tangible difference between my 4.2GHz 1650v3 vs my current SOL 4.8GHz 6700K. Especially in gaming. My NS2 and War Thunder minimum FPS is significantly hit. Both games are single thread and I still can't maintain 120FPS on the 4.8GHz 6700K. Also browsing is noticeably faster too and general snappiness since that is all single thread limited.

Shintai said:
The only "IPC" gains would be from 12MB cache vs 8MB cache.
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no other arch changes in KBY to CFL? I havent been able to keep up with this arch...plus i dont recall too much being discussed yet either.
 
SomeGuy133 said:
...no other arch changes in KBY to CFL? I havent been able to keep up with this arch...plus i dont recall too much being discussed yet either.
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Plenty of changes, none that affect CPU IPC. Kaby was a pretty big boost for the mobile parts in terms of sustained boost clocks and GPU performance, particularly in the ultrabook space...
 
SomeGuy133 said:
no other arch changes in KBY to CFL? I havent been able to keep up with this arch...plus i dont recall too much being discussed yet either.
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SKL, KBL, CFL and CNL are identical if we exclude the IGP. Any changes are just bugfixes and clock optimizations etc on different processes (14, 14+, 14++, 10.). The first new uarch comes with ICL on 10nm+.
 
So has it been confirmed these Coffee Lakes will be compatible with Z270 motherboards? I'm hoping I can simply swap out my dusty ol' 7700k for a shiny new 8700k :D. If I need a new mobo, though, I won't bother.
 
Shintai said:
SKL, KBL, CFL and CNL are identical if we exclude the IGP. Any changes are just bugfixes and clock optimizations etc on different processes (14, 14+, 14++, 10.). The first new uarch comes with ICL on 10nm+.
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yea i see just chipset changes for some reason i thought CFL had a few IPC changes but was wrong. I wish there was info on Ice lake since its onlty a year or so out :/
 
Really excited about these!

Have been really looking at the 7800x, but it may be unnecessary, depending on how the 8700 performs.
 
NukeDukem said:
So has it been confirmed these Coffee Lakes will be compatible with Z270 motherboards? I'm hoping I can simply swap out my dusty ol' 7700k for a shiny new 8700k :D. If I need a new mobo, though, I won't bother.
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Second this question. I moved from a dying 4790k to a 7600k, and while the 7600k is a lovely little i5, I regret moving to an i5. A 7700k wouldn't be enough to get me to upgrade, but if the 6c/12t 8700k will drop into an LGA1151 Z270... well that would change things a bit. :smuggrin:
 
Coffee Lake engineer sample doing 5 GHz:

38cdex7g9ibz.png


Note that this ES has a 3.2 GHz base clock, while 8700K is at 3.7 GHz base clock and could deliver even better results.
 
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Dayman said:
1.415v, Isn't that voltage quite high? Wrong reading?
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Wrong reading, just a simple auto overclock, 14nm++ allowing higher voltage etc. Many options at this stage. But wrong readings is the first likely option to begin with.

Performance and clock is all to go by for now. Its not even a QS sample either, so I guess ES1 or ES2 stage.
 
Shintai said:
Wrong reading, just a simple auto overclock, 14nm++ allowing higher voltage etc. Many options at this stage. But wrong readings is the first likely option to begin with.

Performance and clock is all to go by for now. Its not even a QS sample either, so I guess ES1 or ES2 stage.
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The ES is showing some impressive results at 5GHz. Its about 100 off my 1700 @3.9 multi and scores 60~ points higher in single. Coffee lake is looking interesting and will be very competitive. I just hope Intel don't shoot themselves in the foot by not supporting at least Z270 with Coffee
 
Judging the ST scores I believe the leaker had some processes running in the background as well. Final Core i7-8700K with some fast RAM (and 12MB L3) should be equal/above 225 pts ST at that speed, which would put it at ~1.680 pts MT if we apply the scaling above. Check for example Core i7-7700K @ 4.8 GHz...

cinebench_single.png
 
We'll have to wait for the real OC reviews to come out. Intel has bit us before, pre-release. :)

I'll believe it when I see it.
 
Dayman said:
I just hope Intel don't shoot themselves in the foot by not supporting at least Z270 with Coffee
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Whether they do or don't won't even be a rounding error. Sure, it'd be nice, but it's not like people looking to upgrade just the CPU are just that plentiful.
 
Shintai said:
Wrong reading, just a simple auto overclock, 14nm++ allowing higher voltage etc. Many options at this stage. But wrong readings is the first likely option to begin with.

Performance and clock is all to go by for now. Its not even a QS sample either, so I guess ES1 or ES2 stage.
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Steeping A and revision 0 seem to point to first gen ES.
 
-Sweeper_ said:
Coffee Lake engineer sample doing 5 GHz:

38cdex7g9ibz.png


Note that this ES has a 3.2 GHz base clock, while 8700K is at 3.7 GHz base clock and could deliver even better results.
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99.98 * 50 = 4999 MHz. Wonder about that 5000 on the screenshot. And lets put aside how he did 50 multiplier on CPU that supports at most 36.

Also to these who are thinking about 6 cores at 5GHz. 4 cores at 5 GHz means 90 C without delid at was that 140 W? To get the same thermal envelope, 6 core needs 4*5/6 GHz or about 3.8 GHz because lower clock works at lower voltage. Of course a simple math says: 140W*6/4 = 210 W for 5 GHz. Can you cool it? Naw it would be the same hot potato as 7800X, the only difference would be no mesh, and inclusive L3 cache.

Then again normal Skylake doesn't use FIVR, thus it might be much better thermal headroom, especially when they would remove IGP.
 
Raghar said:
And lets put aside how he did 50 multiplier on CPU that supports at most 36.
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Its unlocked.

Raghar said:
99.98 * 50 = 4999 MHz. Wonder about that 5000 on the screenshot.
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That's not hard considering how CPU-Z works. Try it yourself too.

Example from my own I just took.
cpuz4.png


Raghar said:
Also to these who are thinking about 6 cores at 5GHz. 4 cores at 5 GHz means 90 C without delid at was that 140 W? To get the same thermal envelope, 6 core needs 4*5/6 GHz or about 3.8 GHz because lower clock works at lower voltage. Of course a simple math says: 140W*6/4 = 210 W for 5 GHz. Can you cool it? Naw it would be the same hot potato as 7800X, the only difference would be no mesh, and inclusive L3 cache.

Then again normal Skylake doesn't use FIVR, thus it might be much better thermal headroom, especially when they would remove IGP.
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Its not the same process. KBL and SKL-X uses 14nm+, CFL uses 14nm++. And with 7800X its not even the same design. 7800X supports AVX512 for example as well that is twice the output. Makes no sense to even try compare it.

CFL got IGP, standard GT2.
 
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There's an AT mod that says Intel has no IPC advantage and is already going crazy with performance per watt comparisons using this early ES as a base. Ignored all ST scores as well. The leak definitely got him scared, good showing for Coffee Lake it seems. :D
 
Yea, those clocks aren't that promissing tbh, you'd think Intel would want to hold on to that single/fewer thread advantage by upping clocks etc as much as possible, even if it would slightly have to push thermal envelope. But the only logical reason to go against that option I suppose is not to make the 7800X at $599 looking like an outrageous buy when there will be such a huge focus around gaming benchmarks for this CPU and beating said CPU by like 15~20% in avg or so, while costing only like $359 or whatever it will be. :p But then again I expect Intel to not recommend including X299 in the mix at all and solely use mainstream CPU lineup from Kaby Lake and older gens and of course Ryzen.

Nice to finally see an engineering sample floating around the internets though, 5GHz is a good start, whatever voltage CPU-Z reports (accurate or not). My guess is "auto" overclock in this case and the voltage might not be off and likely the CPU is running a lot hotter than you'd like (100C's loaded depending on cooling a bit) just for the sake of showing something interesting. Even an auto overclock getting this far would be highly promissing, judging by how much exaggeration the voltage is bumped in this previous gen to take the Kaby Lake to 5GHz (1.4v+ even when 1.31v or so had been enough). :p
 
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-Sweeper_ said:
There's an AT mod that says Intel has no IPC advantage and is already going crazy with performance per watt comparisons using this early ES as a base. Ignored all ST scores as well. The leak definitely got him scared, good showing for Coffee Lake it seems. :D
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We all know why, parts like the 1800X will be half or less of its original price ;)
 
juanrga said:
If I am not misguided those are clocks of current engineering samples.
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Its outdated information. CPUs today are also validated against 2667Mhz.

One also just have to look at the last 2 parts to see the obvious flaws if anyone thought this was release information.

And again, its posted before ;)
 
Darkswordz said:
They won't. :D

No matter though. I like that Kyle actually buys his own for reviews. At least that way his conclusions won't be sugarcoated.
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That's the thing, his reviews aren't sugarcoated anyways. Hence why he didn't get Skylake-X.
 
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