LTC8K6
Lifer
- Mar 10, 2004
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KL actually has a 400mhz higher all core turbo than SL, and a 300mhz higher single core turbo than SL.
That's a big difference.
That's a big difference.
The illogical portion of your post is to relate TDP and turbo speed without any other data.In the same graph, the power reduction (at same performance point 1.0 in X axis) from 14nm (Core i7 6700K 4C 8T) to 14nm+ (Core i7 7700K 4C 8T) is higher than 14nm+ (Core i7 7700K 4C 8T) to 14nm++ (Core i7 8700K 6T 12T). So if Core i7 7700K with the same number of cores vs 6700K and same TDP only got 300MHz higher turbo, then its illogical to expect same turbo as 7700K with 50% more Cores/Threads from 14nm++.
KL actually has a 400mhz higher all core turbo than SL, and a 300mhz higher single core turbo than SL.
That's a big difference.
But it's a lower all-core turbo for the 8700K than the 7700K.Yes but they both 4C 8T, KL to CFL is 50% more cores/threads
Its easier to compare 7800X which is 6C 12T at 14nm+ against CFL, if CFL at 95W TDP reach the same MT performance as 7800X at 140W TDP then it should be more than fine and within what we would expect from 14nm+ to 14nm++.
But it's a lower all-core turbo for the 8700K than the 7700K.
7800X has a lot more L2 cache than 7700K
7740X has a higher all core turbo than 7700K
7800X isn't the only one with a 140W TDP though.Yes but they both 4C 8T, KL to CFL is 50% more cores/threads
Its easier to compare 7800X which is 6C 12T at 14nm+ against CFL, if CFL at 95W TDP reach the same MT performance as 7800X at 140W TDP then it should be more than fine and within what we would expect from 14nm+ to 14nm++.
7800X isn't the only one with a 140W TDP though.
The higher clocked 8c/16t 7820X has a 140W TDP as well. The 10c/20t 7900X and 12c/24t 7920X also have a 140W TDP, but these are lower clocked than the 7800X/7820X (though the 7900X has the same turbo as the 7820X).
It's a whole different chip, though. I don't think it can serve as a reference for anything but similar chips.We take the 7800X as a reference because it has the same number of Cores/Threads as the 8700K.
We take the 7800X as a reference because it has the same number of Cores/Threads as the 8700K.
That is a fairly bad reason to use it. The number of cores usually ends up as being one of the worst metrics to hold constant if you want good comparison data.We take the 7800X as a reference because it has the same number of Cores/Threads as the 8700K.
We take the 7800X as a reference because it has the same number of Cores/Threads as the 8700K.
I just posted Intel's data of 27% lower power for the same transistor performance. Why are you using 10 to 12%?7700k 4C/8T - 4.2 Ghz base, 4.4 Ghz All core turbo, 4.5 Ghz max turbo.
8700k 6C/12T - 3.7 Ghz base, 4.3 Ghz All core turbo, 4.7 Ghz max turbo.
I am with atenra in having doubts if with just 10-12% higher transistor performance (14++ vs 14+) Intel can fit 50% mores into roughly the same TDP with just 100 Mhz loss of all core turbo. I am waiting to see how well 8700k maintains/sustains its all core turbo in workloads like CB R15 especially those which are of longer duration. I think 8700k will be a beast of an overclocker.
He's using a flawed theory. If TDP alone was the performance indicator, then a 7900X (also 140W) should perform no better than a 7800X.I am with atenra in having doubts
7700k 4C/8T - 4.2 Ghz base, 4.4 Ghz All core turbo, 4.5 Ghz max turbo.
8700k 6C/12T - 3.7 Ghz base, 4.3 Ghz All core turbo, 4.7 Ghz max turbo.
I am with atenra in having doubts if with just 10-12% higher transistor performance (14++ vs 14+) Intel can fit 50% mores into roughly the same TDP with just 100 Mhz loss of all core turbo. I am waiting to see how well 8700k maintains/sustains its all core turbo in workloads like CB R15 especially those which are of longer duration. I think 8700k will be a beast of an overclocker.
This is the missing piece right here. Skylake X TDPs are based on this, from what I've observed. That's why you can't compare coffee lake with SKL-X.7800X has a different cache structure, quad channel vs dual channel, has AVX-512 support, and designed for use in a totally different platform.
I think that the turbos are working as intended, the ST turbo on the leaked 196 ST score and 1410 score on MT are both accurate enough for a stock configuration.
Ryan Shrout (Editor-in-Chief at PC Perspective) said:Early CineBench number for the 8700K are wrong, just FYI.
...Yah, really can't say more. Just don't like a bad score result making the news rounds.
It will beat the 1600X in MT. No doubt.