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Intel to launch 6 core Coffee Lake-S CPUs & Z370 chipset 5 October 2017
- Thread starter AthlonXP1800
- Start date
Soldato
Incidentally I'm not disagreeing (I've seen how testy this thread gets!), I don't consider that an amazing performance increase at all!
Price aside you don't think a 6 core matching an 8 core is impressive?
Caporegime
1500 points is over 50% scaling from the 7700K at 4.5Ghz, so its running at least 4.5Ghz, add to that core scaling is not perfect 1:1 so its probably running higher than 4.5Ghz.
So if its all core boost is only 4.3Ghz then that score is an overclocked score.
There are other apparent leaks where the 8700K is score less than 1300 points.
Caporegime
Fount it... i'm not saying this is right but there are conflicting results... we just don't know yet.
The 7700K with its 4.5Ghz boost scores about 950 or slightly more.
I think it would be more reasonable to compare it to the top tier 8-core competition (1800x I guess) as the 8700k will be the top tier of it's respective segment. From what I can find online the 1800x gets 1618 (guru3d review), so this rumoured score is still lagging for the 8700k so I wouldn't say it's matching (at stock). I don't think it's really told us anything we are not expecting anyway - roughly Kably Lake IPC with 2 more cores.
Regardless I am most likely going for the 8700k when it comes out.
Fair points, discussing rumours is never easy!
Soldato
Fair point there. Once both overclocked however i expect the gap to reduce or even disappear. The 1800x doesn't overclock very well. Of course we don't know about the 8700k overclock ability yet but screenshots have shown 5ghz.
speaking from 1 sample only, it does 5.4Ghz (HT off) on water (CBr15) and stables easily at 5.1Ghz ish without deliding.
That is very good if true!
Caporegime
The 1800X scores just shy of 1800 points overclocked, thats 20% higher than the 1500 points 8700K rumour which looks like its running at least 4.5Ghz to get that score.
You are assuming no ipc increase though.
Intel themselves have hinted at an ipc increase with the whole 11% faster in single core publicity slides.
Caporegime
I am, Intel have 'hinted' at 15% IPC increases on every new CPU since Sandy Bridge, the fact is we have only seen about 15% IPC increase 'since' Sandy Bridge.
Some obscure Intel sponsored app result and CEO maths is all they need to make claims like that.
I think its a safe bet CoffeeLake is KabyLake with more cores.
I'm pretty sure the 8700K will destroy the 1800X in anything where single threaded performance matters. Having that kind of single with multi that gets close to an 8C/16T would be pretty nice.
Those tend to be somewhat misleading, they usually get that increase via higher turbos (the 8700K supposedly turbos on 1 core to 4.7Ghz). IPC improvements over Kaby Lake will probably be minimal, in the 1-2% range if any.
The big improvement seems to be the more refined 14nm process, 14nm++.
Caporegime
I agree, well, i think "destroy" is too strong a word for what i have no doubt will be significantly high performance in single threaded workloads.
Great, its where you would buy Intel, why you would need 6 cores when all you're looking at is one core performance is where it get's very grey... but yeah, it is true.
Multi-threaded performance is still with Ryzen, as is thermals, and power consumption and cost given the 1700 is pretty much the same CPU as the 1800X, i say that because i think the 1800X does overclok slightly higher.
It's a pretty appropriate word to describe the difference, similar to how the 7700K is significantly faster in single threaded workloads than an 1800X. Key word of course being single threaded, 5-10% difference in IPC depending on workload and another 25% on top from clocks adds up. Similarly the 1800X will destroy the 7700K in multithreaded ones because of the superior SMT and 100% more cores/threads.
Having 7700K single threaded with close to 1800X multi threaded will make the 8700K very interesting, if priced right.
And thermals and power consumption on Ryzen go out the window when you start overclocking because of the voltage cliffs.
Having 7700K single threaded with close to 1800X multi threaded will make the 8700K very interesting, if priced right.
And thermals and power consumption on Ryzen go out the window when you start overclocking because of the voltage cliffs.
Soldato
According to cpumonkey the 1800x score 1617 points, which is about right as my 1700 scores 1637 (clocked to the same all core speed as a stock 1800x)
If the 8700k scores 1500, as what we've heard in this thread and on cpumonkey then the 8700k is 7.2% slower than the 1800x.
Single core scores of cinebench show the 8700k as 25% faster.
Assuming the i7 can reach 5ghz, as we have heard is possible
This is all we have to go on right now and the 1800x results from cpumonkey do tie in with mine.
It seems we do have a decent choice for once. i7 25% faster in single or the 1800x 20% faster in multi. (Once the 1800x is overclocked to 4.0ghz)
I would be surprised by an ipc increase too but that would at least account for a 1500 cr15 score at 4.3ghz on all cores