Skylake Core Configs and TDPs

[AtenRa]

A8 and A10 is not highend.

Its mainstream at best.

Its the High-End of the APU segment.

 

[ShintaiDK]

Its the High-End of the APU segment.

Nope. Its defined as mainstream. And we are talking about the enthusiast segment. Something AMD got nothing CPU wise in.

The enthusiast segment is so small it cant even substain itself.

I can already see where this is going, so both of you can stop here
-ViRGE

 

[mikk]

The next generation Skylake graphics will have up to 72 execution units, which signifies a 50% increase over Broadwell.

http://www.cpu-world.com/news_2014/2014060901_Some_features_of_Skylake_graphics_architecture.html


Assuming 72 EUs refers to GT4 it should give the GT2 SKUs 36 EUs. That's a 50% EU increase like Broadwell. Skylake GT2 should have way more shader power than Iris Pro @Haswell Gen 7.5.

HEVC encoding support as well.

The hardware decoder will work with JPEG, JMPEG, MPEG2, VC1, WMV9, AVC, H264, VP8 and HEVC/H265 video and image formats. The encoder will be support JPEG, MPEG2, AVC, H264, VP8 and HEVC/H265 standards.

 

[bullzz]

@mikk - not sure how you got 36EUs on GT2. GT3 has 2x EUs as GT2. GT2 cant have 36 since both GT3 and GT4 will have same EUs

 

[mikk]

@mikk - not sure how you got 36EUs on GT2. GT3 has 2x EUs as GT2. GT2 cant have 36 since both GT3 and GT4 will have same EUs

18 EUs per slice and it's possible, 54 EUs for GT3 in that case. I'm not sure. 72 EUs for GT2 would be too much I think. The next logical step from 24 EU Broadwell GT2 would be 28, but then 72 EUs wouldn't make sense for a GT4 on Skylake.

 

[jdubs03]

Though the information comes from CPU-world, remember they said GT3 and GT4 having the same EU count is a presumption. My thought would be that GT4 has one more slice of EU's than GT3, otherwise I don't know how GT4 would be any different.

 

[mikk]

Their Roadmap/slide is saying that Skylake graphics will have up to 72 execution units, everything else is a guess. When it says SKL graphics will have up to x EUs someone would think it refers to the strongest SKU which is GT4.

edit, this could work theoretically as well:

GT1= 12 EUs
GT2= 24 EUs
GT3= 48 EUs
GT4= 72 EUs

But in this case there is no EU increase over Broadwell GT2. That being said without knowing how much flops one Gen9 EU can do it's meaningless.

 

[NostaSeronx]

Skylake GT4e = 4 TFlops @ 1 GHz
Broadwell GT3e/GT3 = 2 TFlops @ 1 GHz
Broadwell GT2 = 1 TFlops @ 1 GHz
Cherrytrail GT1 = 0.5 TFlops @ 1 GHz

16 EUs GT1 = Cherrytrail-T
32 EUs GT2 = Broadwell-H/Y/U + Skylake-Y/U/H/S
64 EUs GT3 = Broadwell-U
64 EUs GT3e = Broadwell-H + Skylake-U
128 EUs GT4e = Skylake-H/S

 

[mikk]

Broadwell GT2 has 24 EUs and GT3 48 EUs. It's not more than a wish list.

 

[witeken]

http://www.cpu-world.com/news_2014/2014060901_Some_features_of_Skylake_graphics_architecture.html


Assuming 72 EUs refers to GT4

Wait. I thought theoretical Broadwell GT4 already had 96EUs (and GT3 48, GT2 24) and Skylake would change that to 128 or so? Those 72EUs must refer to GT3, which means that GT2 has 36EUs?

So Skylake will have 50% more EUs per GT?

it should give the GT2 SKUs 36 EUs.

No, your 72EUs for GT4 imply 18EUs for GT2. Because every GT+1 has twice as much EUs.

That's a 50% EU increase like Broadwell. Skylake GT2 should have way more shader power than Iris Pro @Haswell Gen 7.5.

No, Broadwell will have 24EUs, 1.2x as much.

Edit: to me it seems that the CPU-world article is referring to GT3 ("50% more EUs than Broadwell"), but a bit later it says that they think it'll be 72EUs for GT4, but that makes no sense to me. If you look at page 19 of following link, it already has 96EUs.

http://www.highperformancegraphics.org/previous/www_2012/media/Hot3D/HPG2012_Hot3D_Intel.pdf

 

[witeken]

Though the information comes from CPU-world, remember they said GT3 and GT4 having the same EU count is a presumption. My thought would be that GT4 has one more slice of EU's than GT3, otherwise I don't know how GT4 would be any different.

GT3 and GT4 obviously can't have the same number of EUs, because that's what differentiates 1 GT from another. If GT3 has 72EUs, shouldn't that mean that GT4 has 144EUs?

 

[mikk]

Another source for Q2.

ftp://www.isy.com/ev2014/3drevolution_2014_ISY.pdf

 

[Sweepr]

Deleted.

 

[voodoo7817]

Many Z97 boards already have M.2 slots and SATA Express. I doubt if you'll see anything more exotic with Skylake, except perhaps more PCIe lines dedicated to them. There are rumours floating around that Skylake will have a major upgrade to the DMI link (PCIe 3.0 capable?) between the CPU and PCH, and have -more- lines available from the PCH, and PCIe 3.0 support from it. Other then that, there is only possible PCIe 4.0 support from the CPU, but it'll likely be awhile before anything make use of that.

Personally I'm waiting for it, since I'm on a 3770non-K + Z77. So I can afford to wait and see...

Thanks. I looked into this a bit more and it looks like there is only one Z97 board that actually has an M.2 slot at x4 speed, and that is the ASRock Extreme 6. Most other ATX boards have one, but it's only rated at x2 speed. According to reviews, x2 does limit performance compared to x4 (not by heaps and bounds but it is significant). My guess is, as you suggested, that the Skylake platform will offer M.2 at x4 speeds by default, if not even faster.

I'm glad I did additional research about this as I was ready to buy an Asus board but I would have likely been 'upset' in a couple of years when I wouldn't be able to take full advantage of the really high speeds that PCIe SSDs allow. The ASRock Extreme 6 is now really the only Z97 that I will consider.

So there's some more information to chew on for those people like myself who are strongly considering buying into the Z97 platform rather than waiting for Skylake.

 

[ShintaiDK]

The M.2 speed is entirely up to the mobo manufactors. And I bet you will see plenty of x2 in the future as well. Since the mobo manufactors would have to remove it from somewhere else.

 

[witeken]

The slide is real. Intel apparently showed it in Italy or so. It seems that Broadwell-U is just a few months too early. Skylake will probably be launched at Computex.

 

[Insert_Nickname]

Thanks. I looked into this a bit more and it looks like there is only one Z97 board that actually has an M.2 slot at x4 speed, and that is the ASRock Extreme 6. Most other ATX boards have one, but it's only rated at x2 speed. According to reviews, x2 does limit performance compared to x4 (not by heaps and bounds but it is significant). My guess is, as you suggested, that the Skylake platform will offer M.2 at x4 speeds by default, if not even faster.

The Extreme 6 has the added advantage of having the M.2 slot using the PCIe 3.0 lines from the CPU, instead of connecting it to the southbridge. I don't think it has any significant impact on performance, but I do like the idea of the SSD/storage having direct access to the CPU without going through the DMI link. The DMI link is just a glorified PCIe 2.0 x4 link after all. Which all devices connected to the PCH have to share for CPU access.

The downside on the Extreme 6 is that you're limited to a PCIe 3.0 x8 slot for graphics. But the performance impact should be minimal. Unless you're doing some hard-core compute.

I'm glad I did additional research about this as I was ready to buy an Asus board but I would have likely been 'upset' in a couple of years when I wouldn't be able to take full advantage of the really high speeds that PCIe SSDs allow. The ASRock Extreme 6 is now really the only Z97 that I will consider.

So there's some more information to chew on for those people like myself who are strongly considering buying into the Z97 platform rather than waiting for Skylake.

I can't fathom why Intel doesn't provide a few general purpose lines off the CPU besides the x16 link for graphics. Like AMD does. It wouldn't have to be that many after all, just one or two PCIe 3.0 lines would do nicely.

Guess we're seeing the effect of MoD... :whiste:

The M.2 speed is entirely up to the mobo manufactors. And I bet you will see plenty of x2 in the future as well. Since the mobo manufactors would have to remove it from somewhere else.

I suspect you're right about that. Hence why I'm hoping Skylake will have an upgraded PCH. If that's not the case, ***** power consumption, I'm going Broadwell-E...

 

[BrightCandle]

I am constantly disappointed with the situation with PCI-E lanes. We have motherboards with 7 slots and no where near enough PCI-E lanes coming from the CPU to make that feasible.

Its going to become a real issue with M2/PCI-E storage coming out this year and still very limited amounts of slots available.

 

[raghu78]

Skylake GT4e = 4 TFlops @ 1 GHz
Broadwell GT3e/GT3 = 2 TFlops @ 1 GHz
Broadwell GT2 = 1 TFlops @ 1 GHz
Cherrytrail GT1 = 0.5 TFlops @ 1 GHz

16 EUs GT1 = Cherrytrail-T
32 EUs GT2 = Broadwell-H/Y/U + Skylake-Y/U/H/S
64 EUs GT3 = Broadwell-U
64 EUs GT3e = Broadwell-H + Skylake-U
128 EUs GT4e = Skylake-H/S

4 TFLOPS is more than GTX 880M performance. Thats a lot of GPU power. But without a good architecture and high bandwidth memory the performance is not going to be there in actual games. Last but not least Intel's bigger problem is drivers and not the silicon.

 

[witeken]

Cannonlake is rumored to be launched in 2016.

 

[frozentundra123456]

Very confusing lineup. I have a feeling skylake and cannonlake are going to be delayed to decrease the overlap of the various models, but who knows.

I see a danger from intel here much like the american auto manufacturers faced in the 80s and 90s. Just simply too many models of similar performance overlapping with each other, increasing production cost and complexity and confusing the consumer.

 

[mikk]

http://www.cpu-world.com/news_2014/2014062601_More_details_on_Skylake_processors.html


Desktop GT4e has 64MB of edram. BGA version of GT4e 128MB.

 

[Fjodor2001]

http://www.cpu-world.com/news_2014/2014062601_More_details_on_Skylake_processors.html


Desktop GT4e has 64MB of edram. BGA version of GT4e 128MB.

"There will be three main configurations of "S" desktop parts: 2 CPU cores with GT2 graphics, 4 CPU cores with GT2 graphics, and 4 CPU cores with GT4 graphics and 64 MB of eDRAM. All configurations will be available with 35 Watt and 65 Watt TDP options. Quad-core processors with GT2 GPU will be also available with 95 Watt TDP. The "S" CPUs will support DDR3L/DDR3L-RS memory (up to 1600 MHz), and DDR4 memory (up to 2133 MHz). "

I'm wondering how come the quad-core processors marked in bold will require 95 W TDP if they only have GT2?

 

[AtenRa]

"There will be three main configurations of "S" desktop parts: 2 CPU cores with GT2 graphics, 4 CPU cores with GT2 graphics, and 4 CPU cores with GT4 graphics and 64 MB of eDRAM. All configurations will be available with 35 Watt and 65 Watt TDP options. Quad-core processors with GT2 GPU will be also available with 95 Watt TDP. The "S" CPUs will support DDR3L/DDR3L-RS memory (up to 1600 MHz), and DDR4 memory (up to 2133 MHz). "

I'm wondering how come the quad-core processors marked in bold will require 95 W TDP if they only have GT2?

Higher clocks, higher TDPs

 

[ShintaiDK]

The numbers are copy/paste from other places. First page being one of them. And the 95W is the platform spec. Haswell and Ivy bridge for example was also listed as 95W. It doesnt mean there will be 95W.

And the 64MB have been up and debunked before. Lets see if it happens this time.