Intel Skylake / Kaby Lake

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Rngwn

Member
Dec 17, 2015
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Xeon E3 1515M v5 on SFF board.

New congatec COM Express module with Intel® Xeon® processor and Intel® Iris™ Pro graphics


Deggendorf, Germany, 23 February 2016 * * * congatec, a leading technology company for embedded computer modules, single board computers (SBCs) and embedded design & manufacturing (EDM) services, has added a particularly powerful graphics version to its COM Express Basic Server-on-Module portfolio. The new module features the Intel® Xeon® Processor E3-1515M v5, fast DDR4 memory and Intel® Iris™ Pro graphics. The GPU of the new SoC module provides 128 MB eDRAM and with 72 execution units it has three times more parallel execution power than the Skylake architecture without Iris graphics. Developers of tightly packed COM Express based system designs now have access to a new performance class that would have previously required a dedicated graphics unit.

http://www.congatec.com/congatec-ag/press-releases/article/congatec-triples-graphics-performance-of-its-server-on-modules.html

Good to see that more of GT4e parts find their way to OEMS.
 

Sweepr

Diamond Member
May 12, 2006
5,148
1,143
131
I'm not sure if this is posted already, but it seems like the i7-6700K is beating the i7-5820K and 5960X in games.
https://www.youtube.com/watch?v=ocwwaVGUFtk

This could generate a heated debate. Core i7-6700K was faster than Haswell-E @ equal clocks while using slower memory (dual-channel DDR4-3000 vs quad-channel DDR4-3200). And the Skylake part generally hits higher clocks (4.6-4.9 GHz).



There are some genuine surprises and upsets in the results here - not least that very, very few games actually seem to utilise anything like the full power of the eight-core i7 5960X. By and large, it hands in showings commensurate with clock-speed as opposed to the number of cores, meaning that the performance profile of the $1000 CPU is almost entirely like-for-like with the far cheaper 5820K. But perhaps more surprising still is the showing of the 6700K. At stock speeds it's extremely competitive with the more expensive processors. Overclocked, it is the fastest chip in the line-up in all but one title - Crysis 3, where 5960X is faster.

The biggest shock comes from Far Cry 4, where Skylake positively annihilates both Haswell-E chips. We know that it uses one or two cores to power all of the others, and for this one title we see a 20fps advantage over the 5820K. Interestingly, despite the 5820K's overclock only being 200MHz higher, it achieves a full 10fps advantage over the eight-core 5960X. There are some other interesting results - Assassin's Creed Unity really looks GPU-limited here as none of the overclocks look particularly effective, and yet Skylake still manages to pump out a 5fps advantage. It seems that faster architecture can push the GPU limit a little further in a way that clock-speeds can't.

...The takeaways here seem pretty self-evident though - virtually all modern games utilise at least eight threads, and this translates into higher and often smoother performance when a Core i7 processor is compared to its i5 counterpart - in Skylake's case, the Core i5 6600K. However, we went into these tests thinking that the eight-thread support might result in even higher performance when run across more physical full cores. Crysis 3 and Grand Theft Auto 5 do show that there are some gains here, but they're quite rare - and they seem to be eclipsed by the pure single-core brute-force offered by a more modern architecture. In effect, the advantage that kept Intel ahead of AMD in the CPU gaming performance battle also serves to limit the effectiveness of the firm's own many-core designs.

Far Cry 4 results are shocking, Skylake is 20% faster than Haswell per clock.

www.eurogamer.net/articles/digitalfoundry-2016-what-is-the-fastest-gaming-cpu




Getting closer and closer to retail products.
 
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SAAA

Senior member
May 14, 2014
541
126
116
Skylake with GT4 is just a bit over 210mm^2, I just scaled the die below with the 77mm^2 eDRAM:



Pretty long chip, btw over 65% of the die is IGP

If integrated graphics ever had a chance of beating low end discrete GPUs this is it; that or AMD going nuts and using twice the shaders + HBM on Zen apus...
 

Rngwn

Member
Dec 17, 2015
143
24
36
Skylake with GT4 is just a bit over 210mm^2, I just scaled the die below with the 77mm^2 eDRAM:



Pretty long chip, btw over 65% of the die is IGP

If integrated graphics ever had a chance of beating low end discrete GPUs this is it; that or AMD going nuts and using twice the shaders + HBM on Zen apus...

Now I think I can see why Intel could not make more than 72 EUs iGP, the die would simply too long to fit on that package LOL. Only if Intel would be a bit smarter and re-arrage their die so that they could fit more EUs in KBL, or wait for a 10mm die shrink. *sigh* This does not bode well for KBL GT4e against nVidia.
 

SAAA

Senior member
May 14, 2014
541
126
116
Now I think I can see why Intel could not make more than 72 EUs iGP, the die would simply too long to fit on that package LOL. Only if Intel would be a bit smarter and re-arrage their die so that they could fit more EUs in KBL, or wait for a 10mm die shrink. *sigh* This does not bode well for KBL GT4e against nVidia.

Well rather than fit even more EUs I'd work on the architecture: just look at the previous page tests were 6700k iGPU is well above the i3 4160 one and both have 24EUs.
If generation 9 is such a big jump over Haswell graphics I'd expect no less from generation 10 (?) Kabylake.

Then there's still the little issue about video drivers... let's hope DX12 helps here too
 

coercitiv

Diamond Member
Jan 24, 2014
6,631
14,069
136
Well rather than fit even more EUs I'd work on the architecture: just look at the previous page tests were 6700k iGPU is well above the i3 4160 one and both have 24EUs.
If generation 9 is such a big jump over Haswell graphics I'd expect no less from generation 10 (?) Kabylake.
It's 24EUs in Skylake vs. 20EUs in Haswell. Then there's also the small issue of pitting an i3 vs an i7, afaik the bigger L3 cache helps the iGPU. We should also check for any memory bandwidth differences between the Skylake and the Haswell system.

Gen 9 graphics do improve performance, but in some cases what we see in benchmarks is a combination of factors.
 

IntelUser2000

Elite Member
Oct 14, 2003
8,686
3,786
136
Now I think I can see why Intel could not make more than 72 EUs iGP, the die would simply too long to fit on that package LOL.

They could have arranged the die like this: http://images.anandtech.com/doci/9320/BDW-H-Map.png

Then they could fit more. Why such a long rectangle? No idea. Maybe lower production costs? Easy to cut into GT3/GT2 dies?

Perf/watt is the reason Skylake GT4e has only 72EUs. At max power the Iris Pro 6200 was at power usage levels near to Geforce 740/750 cards. That's nothing to be proud about with an iGPU.

Then there's still the little issue about video drivers... let's hope DX12 helps here too
On the Gen 9 generation though, Intel at least have caught up to Maxwell chips in performance when you roughly normalize to equal specs(Flops/GTexels/Bandwidth). Broadwell was a bit behind. I think the issue is they ultimately treat their graphics as they did with "HD Audio", with bland GUI and no outstanding features.
 
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IntelUser2000

Elite Member
Oct 14, 2003
8,686
3,786
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My calculation based on the whole package (42x28) is 219,4 mm².

That's pretty nice. I've calculated Broadwell-C to be roughly 200mm2. So for a 10% die increase they managed to take the GPU from Gen 8 to Gen 9, and increase the slice count by 50% at the same process. I've miniaturized Skylake 4+2, cut out the iGPU, and copied and pasted twice to make it 72 units. It FULLY fits 2 extra GPU blocks. I can't believe its not much larger than Haswell GT2.

The reasons are twofold
-Skylake no longer needs eDRAM tags
-Gen 9 is little better optimized for density than Gen 8

I think there's a possibility they can make a 300mm2 Kabylake with 144EUs if they can make it far better in perf/watt.

Just for fun:
-144EUs: 2.3TFlops @ 1GHz
-72GTexels/s @ 1GHz
-200GB/s eDRAM with 2-Hi stacks 256MB capacity

Better than Geforce 960 performance in an iGPU.

 
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Sweepr

Diamond Member
May 12, 2006
5,148
1,143
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Big news, non-K BCLK overclocking is back for ASRock motherboards!

ASRock Uses External Clock Generators to Circumvent Intel non-K BClk OC Limits



ASRock is implementing a novel workaround to Intel's recent base-clock overclocking restrictions for its 6th generation Core "Skylake" processors. The company announced the Fatal1ty H170 Gaming K4 HYPER and Fatal1ty B150 Gaming K4 HYPER motherboards, which are based on a common PCB, but differ with chipset - H170 Express and B150 Express. The two use an external clock-generator chip to give cadence to the CPU, circumventing the on-die clock-generator Intel has been using for the past several generations of Core processor chipsets.

With this contraption, you can increase base clock frequency on non-K Core processors in fine increments of 0.0625 MHz, as well as tweak memory clock. Its star attraction aside, the two "HYPER" series motherboards offer mid-range feature-sets, that are nearly identical to those of the Fatal1ty H170 Gaming K4 and the Fatal1ty B150 Gaming K4 boards.

www.techpowerup.com/220703/asrock-u...to-circumvent-intel-non-k-bclk-oc-limits.html

Budget Intel overclocking with H170 / B150 motherboards and locked Skylake.
 
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PPB

Golden Member
Jul 5, 2013
1,118
168
106
That is indeed good news. Also dumps to the trash the faux argument Z170 was actually needed for BCLK-OC.

Now make B150-H110-Z170 compatible back again with Xeon mainstream chips and suddenly Skylake becomes somewhat enticing for the Haswell-DC crowd.
 

coercitiv

Diamond Member
Jan 24, 2014
6,631
14,069
136
Big news, non-K BCLK overclocking is back for ASRock motherboards!
Imagine how everyone who bought into the last great news must feel: now all they have to do is buy a new motherboard every few months :\
 

ShintaiDK

Lifer
Apr 22, 2012
20,378
145
106
And still no native HDMI2.0?

Just buy a mobo with the LSPcon. I dont think you are ever going to see HDMI 2.0 without. HDMI 1.4 already comes from a DP 1.2 conversion. In other words, I only think Intel supports DP out of the CPU now and future.
 

Sweepr

Diamond Member
May 12, 2006
5,148
1,143
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Actually it's better than before, not restricted to Z170 motherboards anymore. And hopefully the previous limitations (iGPU, AVX, C-states) aren't there. Just a matter of time till others (MSI, ASUS, Gigabyte, etc.) come up with similar motherboards.


That's pretty nice. I've calculated Broadwell-C to be roughly 200mm2. So for a 10% die increase they managed to take the GPU from Gen 8 to Gen 9, and increase the slice count by 50% at the same process.

Very impressive, and certainly opens the door for >72 EUs in Kabylake-H GT4e. Adding a fourth slice for 96 EUs (+200GB/s 2x 128MB eDRAM) makes sense IMHO. Would be a solid bump and still leave a lot of room for the 10nm generations.

I think there's a possibility they can make a 300mm2 Kabylake with 144EUs if they can make it far better in perf/watt.

Just for fun:
-144EUs: 2.3TFlops @ 1GHz
-72GTexels/s @ 1GHz
-200GB/s eDRAM with 2-Hi stacks 256MB capacity

Better than Geforce 960 performance in an iGPU.


Would be fun to see a monstruous iGPU with lower clocks, probably more efficient than the current ~1GHz Iris Pro models.
 
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Aug 11, 2008
10,451
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Actually it's better than before, not restricted to Z170 motherboards anymore. And hopefully the previous limitations (iGPU, AVX, C-states) aren't there. Just a matter of time till others (MSI, ASUS, Gigabyte, etc.) come up with similar motherboards.




Very impressive, and certainly opens the door for >72 EUs in Kabylake-H GT4e. Adding a fourth slice for 96 EUs (+200GB/s 2x 128MB eDRAM) makes sense IMHO. Would be a solid bump and still leave a lot of room for the 10nm generations.



Would be fun to see a monstruous iGPU with lower clocks, probably more efficient than the current ~1GHz Iris Pro models.

And just a matter of time until intel finds a way to nerf it again. Honestly, I dont see why anyone would mess around with this until it is officially sanctioned by intel.
 

Sweepr

Diamond Member
May 12, 2006
5,148
1,143
131
And just a matter of time until intel finds a way to nerf it again. Honestly, I dont see why anyone would mess around with this until it is officially sanctioned by intel.

Because people want to bring back the fun of budget CPU overclocking to Intel systems. Looks like a more sofisticated solution than before, and I'm glad ASRock is still comitted to this.
 

Tidekilla115

Member
Feb 28, 2016
148
0
16
I know this is the skylake thread but the build I'm in the process of uses a haswell pentium g3258 and some people say I can't overclock with windows 10 is this true?
 
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poofyhairguy

Lifer
Nov 20, 2005
14,612
318
126
I know this is the skylake thread but the build I'm in the process of uses a haswell pentium g3258 and some people say I can't overclock with windows 10 is this true?

There was an issue with OC on non-Z boards and Windows 10, but I think that was resolved in November.

Honestly a lot of Z97 boards are going for cheap. I advise not risking it happening again.
 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
126
Ok thanks my board is not a z it's a B85-m-g r2.0. But it being asus it should still work right?

I had that board, and a G3258 running nicely at high overclock.

The overclock ability disappeared with updates. I can't overclock with the board anymore.
 
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