Specs on Intel Skylake IGP leak

by Hilbert Hagedoorn on: 10/20/2014 09:42 AM | source: | 23 comment(s)

There has been talk and gossip about the upcoming Intel Skylake IGP. Chips based on the IGP are due for launch in 2015. CPU World got a hold of new details about the Skylake GT1, GT2, GT3e and GT4e graphics. The models with the "e" suffix are the psicy ones and come with 64MB eDRAM on quad-core LGA1151 CPUs and 128MB of eDRAM on "H" series Broadwell CPUs for extra performance.

Skylake chips will come with GT2, GT3e or GT4e GPUs, built on 9th generation graphics architecture, and "e" units will be coupled with up to 128 MB of eDRAM memory for extra performance. The GT4e GPU, obviously, is the fastest one, and it will be accompanied by 64MB embedded DRAM on quad-core LGA1151 CPUs, or 128 MB eDRAM on "H" line of BGA processors. GT4e graphics will utilize 72 execution units (EUs), that is 50% more than the best Broadwell GPU, which has 48 EUs. As a result, we expect GT4e-equipped models to be far superior in 3D graphics applications and games to Broadwell chips. As for GT3e and slower GPUs, Skylake processors will have exactly the same number of EUs as Broadwell products, therefore their performance advantage over Broadwell will be only due to graphics architecture enhancements.

Skylake GT3e graphics will incorporate 48 execution units, and will have 64 MB of eDRAM cache. The GPUs will be used in "U" ultra low power systems-on-a-chip.

The most common GT2 graphics will have 24 execution units. It will be available in desktop LGA1151 CPUs, "U" 15W SoCs, "Y" SoCs and "H" series processors.

GT1.5 GPUs will come with 18 execution units (same as Broadwell), and they are going to be integrated into dual-core desktop chips for socket 1151.

Finally, GT1 graphics units will have 12 EUs, that is identical to Broadwell GT1. The GPUs will be used in dual-core socket 1151 CPUs, and in some "U" series chips with 15 Watt TDP. Via CPU world

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Fender178
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#4941955 Posted on: 10/21/2014 05:27 PM

I agree that they should remove the IGP from the K series CPUs but I like the idea of having a back up plan in case that your graphics card decides it wants to die. In my troubleshooting quest of my r9 290 the IGP saved me by giving me the ability to use my PC until I figured out the issue with my Graphics card.

Mrwhiterx7
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#4941986 Posted on: 10/21/2014 06:44 PM

Is it true these are going to be factory clocked very low with turbo coming out less than 3ghz? Maybe it's the IGP forcing that?

-Tj-
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#4941998 Posted on: 10/21/2014 07:00 PM

i would have to question, how good will intels driver support be for gaming if using this leaked info igpu for gaming ?

what im saying is no one can say for sure until the hardware is released and put in practice.

what intel should do is the same as AMD, offer a choice with or without IGPU.

say i7-4770 with IGPU
or i7-4770K without IGPU

i would build the K's but charge a premium price(why premium price? because that's business) with out igpu for overclockers and keep the IGPU for the non K's and normal everyday use.

Then that K model should have had something extra to fill that empty space on chip, idk 1 more core or 4mb extra cache..

k3vst3r
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#4942011 Posted on: 10/21/2014 07:32 PM

Intel won't make different dies for same line cpu's, just isn't profitable for them. They have their haswell-e range dies shared with xeons too...can tell you now every haswell-e chip has 8 cores on the die, they just disable the naff/dud ones. Then they have their mobile range dies which 4770 etc all share too hence the IGP. I mean all they would do is disable the IGP an brand it as IGP less, but still be there taking up die space just blanked off.

qepsilonp
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#5045163 Posted on: 04/07/2015 04:26 AM

Tbh I see Intel getting ride of the enthusiast platform when cannonlake comes out espisally given the name of the chipset for Cannonlake "Union point." The only reason we had the Enthusiast platform was so Intel could sell its iGPU's for a profit while still developing them.

And by the time Cannonlake comes out that should be true as given that Broad well will increase iGPU performance by 22% and Skylake 50% and Cannonlake probably another 22% an iGPU should be an attractive proposition for a budget gamer skill looking at 1080p gaming.

So what they do is die shrink the next Enthusiast processors down onto Cannonlake and probably you will have the option between an 2 - 4 core CPU/W iGPU or 2 - 12 core Pure CPU the 12 core will cost $1000+ still but the 6 - 8 core CPU's should be affordable in the $240 - $400 mark with the CPU's with iGPU's should come in at $250 or less

But I don't think it will be a clear cut decision with technologies like DX12 which could enable you to use your somewhat powerful iGPU in concert with your more powerful discrete GPU to deliver higher frame rates than the discrete GPU could deliver alone, so if your building a pure gaming rig if that happens which by the talk Microsoft has been spouting it will be the Intel and AMD APU's may be a better option for gamers.

Also for live steaming the APU's may be just as good as the Pure CPU's as you could use GPGPU to accelerate or almost completely take over video encoding.

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