Intel Skylake / Kaby Lake

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witeken

Diamond Member
Dec 25, 2013
3,899
193
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Nope, it was on par with the GT-740, an $89 part that launched a year ago on a manufacturing process two generations behind Intel's.

So, even with Intel's vastly superior manufacturing and eDRAM, that's the best they could manage while costing over 3x more.
But Intel's IGPs are part of the CPU, so they're not made on a process that's optimized for GPUs, which makes them inherently disadvantaged, particularly when it comes to transistor count/density.

Certainly because GPUs depend hugely on transistor count.
 

TeknoBug

Platinum Member
Oct 2, 2013
2,084
31
91
After reading the Anand Skylake review today I'm probably going to stick to my Ivy Bridge for a while longer or maybe get the Broadwell i5 5675C if I'm in the mood to upgrade (I like the power consumption). The increase on Skylake from Sandy/Ivy/HW/BDW isn't that big if it's for gaming but noticeable performance increase on file compression and Linux.
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
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After reading the Anand Skylake review today I'm probably going to stick to my Ivy Bridge for a while longer or maybe get the Broadwell i5 5675C if I'm in the mood to upgrade (I like the power consumption). The increase on Skylake from Sandy/Ivy/HW/BDW isn't that big if it's for gaming but noticeable performance increase on file compression and Linux.

Keep in mind that Anandtech used rather slow ram with Skylake.
 
Jul 26, 2006
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Looks like the leaks were true and this is another disappointment... I am now starting to get worried about broadwell-e...
 

Sweepr

Diamond Member
May 12, 2006
5,148
1,142
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Anandtech used the speed supported by the memory controller. Everyone else overclocked.

DDR3-1600 is the highest officially supported by Haswell, I doubt they used such slow RAM for the DDR3 systems in this review. Skylake-S benefits from fast DDR4-3000+ as shown by Techspot, HardOCP and other websites.

www.techspot.com/articles-info/1041/bench/DDR_02.png

Not only CPU performance but (obviously) better iGPU results too.
Here's one of the few HD Graphics 530 tests I saw using DDR4-3600:



40-70% faster than HD4600. New architecture paying off.
 
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StrangerGuy

Diamond Member
May 9, 2004
8,443
124
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I saw the OC results by AT and lol'ed.

Max 4.4GHz out of a chip that stock turbos to 4.2GHz. Tell me why are we overclocking again? Before you say i5 I highly doubt those are binned as good as the i7s to begin with.
 

dahorns

Senior member
Sep 13, 2013
550
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I saw the OC results by AT and lol'ed.

Max 4.4GHz out of a chip that stock turbos to 4.2GHz. Tell me why are we overclocking again? Before you say i5 I highly doubt those are binned as good as the i7s to begin with.

I don't think you read their results very well. . .
 

Sweepr

Diamond Member
May 12, 2006
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The Core i7-6700K was an overclocking delight, reaching 4.8GHz with no effort at all. To achieve this frequency we simply hit the quick OC button and selected the maximum value of 4.8GHz. The system reset, loaded Windows 10 and we began testing. Keep in mind the ambient room temperature was just 21 degrees and we were using the Noctua NH-D15.

www.techspot.com/review/1041-intel-core-i7-6700k-skylake/page12.html

Putting everything together we settled with a 200 BCLK tied into a 24 multiplier giving us 4.8GHz with 3600MHz memory and 4.4GHz cache.

www.overclock3d.net/reviews/cpu_mainboard/intel_skylake_i5_6600k_i7_6700k_1151_z170_review/4

So after toying with it for a while, I set the system up to do a stability run at 4.7GHz/3600MHz at 1.32v vCore, and 1.35v (spec) memory voltage. The screen shot below shows you a 23 hour run of Prime95. (But Kyle said Prime95 was not the problem! You would be correct.)

www.hardocp.com/article/2015/08/05/intel_skylake_core_i76700k_ipc_overclocking_review/7#.VcI7qvm1HVI



www.guru3d.com/articles_pages/core_i7_6700k_processor_review_desktop_skylake,18.html

AnandTech surely didn't have much luck with their sample.
 

Headfoot

Diamond Member
Feb 28, 2008
4,444
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With that level of dx12 support, and the uncertain promise of explicit multi adapter support, the Skylake iGPU might actually be able to team in a useful way with dGPUs. This might be the first iGPU that isnt just wasted silicon for high end gamers...
 

moonbogg

Lifer
Jan 8, 2011
10,637
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So it looks like Skylake-E @ 4.6Ghz if I'm lucky in about a year for a 25% performance increase. I can't believe it takes 1.32 volts to get a 6700k at 4.7. I got a 3930k @ 4.6 using 1.31.
4.2 stock to 4.7 seems to be a good overclock for these chips. That's pathetic, but still pretty fast. Just about 25% faster than a sandy. Many people have Sandy's faster than that, so their increase would be around 20% or less.
So if a game gets 75FPS now, it will get about 93FPS a year from now using Skylake-E. I'm thrilled. Can you tell?
Sandy's time is not done. I'll wait for the Skylake-E reviews to make that call myself.
The only thing that seems to be able to kill Sandy is like, a solar flare or something.
 
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Sweepr

Diamond Member
May 12, 2006
5,148
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Hot Hardware's review looks a bit like AnandTech in the old days, definitely worth taking a look.

For our next set of tests, we moved on to some in-game benchmarking with Crysis (DirectX), Bioshock Infinite (DirectX) and Enemy Territory: Quake Wars (OpenGL). When testing processors with some games, we drop the resolution and reduce all of the in-game graphical options to their minimum values to isolate CPU and memory performance as much as possible. However, the in-game effects, which control the level of detail for the games' physics engines and particle systems, are left at their maximum values, since these actually place some load on the CPU rather than GPU.


Core i7 6700K 13.5% faster than Core i7 4790K


Core i7 6700K 11.5% faster than Core i7 4790K


4.6GHz Core i7 6700K 31% faster than Core i7 4790K





Basically when you actually need CPU grunt in game Skylake-S will be faster. They used DDR4-2666 which is the absolute minimum I'd pick, still better than AnandTech's DDR4-2133.

http://hothardware.com/reviews/inte...chipset-review-skylake-for-enthusiasts?page=1
 

Edrick

Golden Member
Feb 18, 2010
1,939
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Looks like the leaks were true and this is another disappointment... I am now starting to get worried about broadwell-e...

Seems like many people here will call anything a disappointment unless it can OC to 6Ghz or offer >50% increase in IPC.

Its a shame that many people got spoiled with SB and now expect that all the time.

Its also a shame that many people overlook the platform as a whole and focus more on the CPU or just the gaming benches. I am just as excited about moving from the Z87 to Z170 chipset. But I am just a developer and only a part-time gamer.
 

moonbogg

Lifer
Jan 8, 2011
10,637
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Hot Hardware's review looks a bit like AnandTech in the old days, definitely worth taking a look.




Core i7 6700K 13.5% faster than Core i7 4790K


Core i7 6700K 11.5% faster than Core i7 4790K


4.6GHz Core i7 6700K 31% faster than Core i7 4790K





Basically when you actually need CPU grunt in game Skylake-S will be faster. They used DDR4-2666 which is the absolute minimum I'd pick, still better than AnandTech's DDR4-2133.

http://hothardware.com/reviews/inte...chipset-review-skylake-for-enthusiasts?page=1

Holy crap, you mean someone actually remembers how to test a CPU for gaming? I thought for sure that was a lost art and left only to us gamers to do for ourselves. Wow, nice find. Although, the difference between 200fps and 300fps is just about 100 useless FPS. But I'd rather know than have NO CLUE due to intentional GPU bottlenecking. And yeah, Skylake did quite well @ 4.6. I'll take one with 6 cores please.
 
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Absolute0

Senior member
Nov 9, 2005
714
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On another note, seeing memory-dependent performance like this is kind of new and may eventually be exciting. For a while performance has seemed pretty independent of memory speed. Perhaps the DDR4 performance results suggest that as DDR4 memory matures, and we understand how to clock it up better, greater levels of performance might be attained? Some memory-dependent headroom.
 

Edrick

Golden Member
Feb 18, 2010
1,939
230
106
On another note, seeing memory-dependent performance like this is kind of new and may eventually be exciting. For a while performance has seemed pretty independent of memory speed. Perhaps the DDR4 performance results suggest that as DDR4 memory matures, and we understand how to clock it up better, greater levels of performance might be attained? Some memory-dependent headroom.

True. I wonder what changes Intel made to their IMC (other than DDR4 support). We will have to wait to find that out.

I am sure glad I bought a set of 3000Mhz CL15 DDR4 memory on Monday. Now I just need a MB and CPU to go with it. Come on Newegg!!!!!
 

ShintaiDK

Lifer
Apr 22, 2012
20,378
145
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True. I wonder what changes Intel made to their IMC (other than DDR4 support). We will have to wait to find that out.

I am sure glad I bought a set of 3000Mhz CL15 DDR4 memory on Monday. Now I just need a MB and CPU to go with it. Come on Newegg!!!!!

I just lack a mobo that I want. The ITX boards so far have been one disaster after the other. Seems its a race to the bottom.

Mobo list so far:
http://geizhals.eu/?cat=mbp4_1151

Also a couple of Asus H170 mobos selling at a shop in DK. Someone made a mistake with those and started to sell way way too early.
 
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krumme

Diamond Member
Oct 9, 2009
5,956
1,595
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If we had competition on the cpu side we would have had 8 cores and plus 10% ipc for same $ by now.
Yes Moores law is crashing and ipc is slowing down but not like only 25% in 5 years.
The lack of need for more cpu perf is at play too.
Damn. How boring
 
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