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Coffeelake thread, benchmarks, reviews, input, everything.

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LTC8K6 said:
IIRC, the 8400 should run at 4.0 on all cores under load with a Z board.
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That's my bet as well, but I'm going to make the estimate as safe as possible. Personally I see no reason why the Multicore Enhancement won't work the way it did in prior gen chips considering the current competitive environment.
 
Dayman1225 said:
https://videocardz.com/73155/intel-core-i7-8700k-delided
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The leak with 149 mm² was correct as we can see. Didn't some people claim Intel is unable to fit 12MB within 150 mm²? What happened to these people?


tamz_msc said:
It's more likely that 6C+9MB L3 is what they can fit in 149 mm^2, rather than 6C+12MB L3.
Click to expand...
tamz_msc said:
They'll need something bigger than 149mm^2 if they are to fit 2MB L3/core.
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tamz_msc said:
We know 6C/6T is 9MB L3, and unless die sizes are official, I'm not wrong - perhaps they are using a bigger die than 149mm^2 or the 149mm^2 figure was inaccurate to begin with.
Click to expand...
tamz_msc said:
There goes the 12MB L3.
Click to expand...
 
ezodagrom said:
I would like to know that as well, and also, in motherboards that make it possible to use 1 core turbo on all cores, would that work on a non-K CPU?
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I just checked a 7600 review by tom's and it manages to hold 3.9 GHz turbo under heavy load.

If 8400 manages to do the same, it's going to be a superb buy for the price.
 
PeterScott said:
Says who? I think you basing that on a bios bug, in an early test of a K CPU.

I wouldn't expect that behavior with non-K CPUs with 65W TDP.
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Based on previous non-K chips and Z boards.

A 4790S will happily run all it's cores all day at 4.0 under load with a Z chipset, for example.
 
coercitiv said:
They will be mounted on Z boards:
  • Multicore Enhancement
  • Configurable TDP
It will probably take 2 clicks to setup the "overclocked" i5 8400.
Click to expand...

I'll let someone else prove that first.

But as cheap as I am, I would still pay the extra to get to the i5-8600K at 5GHz, and when someone did a poll, I was in the extreme minority for choosing the 8600K when everyone was picking the even more expensive 8700K.

On Newegg, the 8600k/8700K are both sold out. The i5-8400 is in stock.
 
PeterScott said:
I'll let someone else prove that first.

But as cheap as I am, I would still pay the extra to get to the i5-8600K at 5GHz, and when someone did a poll, I was in the extreme minority for choosing the 8600K when everyone was picking the even more expensive 8700K.

On Newegg, the 8600k/8700K are both sold out. The i5-8400 is in stock.
Click to expand...

I do not think your necessarily wrong. One of the two chips SHOULD cannibalize some of the sales of the other. Either the 8600k cannibalizes 8700k, or the 8700k cannibalizes some of the 8600k. The purpose of these two chips is either maximum game performance or all around chip. The only issue with an all around chip is you need to consider Company workloads if your a small business of a few persons/friends, who also game. Would it be better to buy a large number of all around chips say 8 of the 8700ks, or would it be better to buy 3-4 8600ks for direct development, and make a large 1-2 rack renderfarm with the r7 1700? This is of course assuming your buying ALL new(many of course will only update 1-2 units per year, which further complicates development).

Overall some might choose A and some might choose B. However, there might be a greater preference to one side, which should become apparent once initial purchases die down and coffee lake production ramps up (not to mention limited purchases until 2018 delaying the ability to get read on the situation).

8100, 8350k, and 8400 are the more interesting parts for coffeelake imo. 8700k OCed should not be significantly faster in ST or MT than a Well OC haswell 6core or OC broadwell (10%) or in rarer cases for those who OCed all aspects including the mesh of skylake-x 6 core.
 
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PeterScott said:
But as cheap as I am, I would still pay the extra to get to the i5-8600K at 5GHz
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It's not only the overclock that you're buying with the K part, the chip itself is better binned. Even if you don't overclock, you still get more for the extra dollars you're spending. Back when Skylake launched the 6400 was an obviously inferior chip, with higher voltage requirements at high speeds. (as highlighted when BCLK overclocking was briefly unlocked for non-K parts)

Personally I would still go for 8600K or 8700K depending on performance requirements, but this time I wouldn't shy away from recommending the 8400 if on strict budget (and reviews show it's decent silicon ofc).
 
mikk said:
The leak with 149 mm² was correct as we can see. Didn't some people claim Intel is unable to fit 12MB within 150 mm²? What happened to these people?
Click to expand...

BenchLife.info doesn't post fake info. Also, the way that Skylake architecture is setup, there is 2MB of L3$ right next to the core, so it would make no sense to not have the extra 2MB/core slices in a 6 core part.
 
AtenRa said:
Am expecting the 8350Κ at 4.8GHz to be faster than 8400 in games.
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The only thing that makes me curious about 8350K is the larger cache relative to the older 7600K/6600K. There have been claims over the years that the larger cache of the i7 influenced gaming performance more than HT did, and I guess this time we'll have a definitive answer.
 
coercitiv said:
The only thing that makes me curious about 8350K is the larger cache relative to the older 7600K/6600K. There have been claims over the years that the larger cache of the i7 influenced gaming performance more than HT did, and I guess this time we'll have a definitive answer.
Click to expand...
I'm familiar with a few tests regarding L3 cache and it's effect on gaming performance, albeit with two cores.The difference was ~10% between a Haswell Celeron with no L3 and an i7 with 8MB L3. It would be interesting to see how it really affects quad-cores.
 
Pookums said:
I do not think your necessarily wrong. One of the two chips SHOULD cannibalize some of the sales of the other.
Click to expand...

I was more thinking that the 8600k and 8700k would push former HEDT users back onto the mainstream platform, cannibalizing Skylake-X sales. Which is basically logical. If you formerly had 6c/12t on x99, the prospect of a 5 GHz hexcore Skylake would be pretty damn tempting. And it worked just as well as it promised when announced so why not?
 
Hmmm

coffee-lake_8700kqmyni.png
 
RichUK said:
Yeah. Lifted it from another forum. Some of the numbers don't make sense.
Click to expand...
Then give this "another forum" a credit 🙂
Author also commented what he thinks about the numbers and what will do, so I guess there is no problem to use google translator ? 😉
 
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