Coffee Lake with Iris Plus at 28W

Intel recently announced its ‘Intel Core with Radeon RX Vega’ processor line, featuring a H-series processor combined with an AMD graphics chip and a sizeable amount of high-speed HBM2 memory connected via Intel’s proprietary EMIB technology. These parts are designed to service the high-end for integrated graphics, going above and beyond any other integrated graphics solution in the past. That used to be a post held by Intel’s processors that used eDRAM, using the Iris, Iris Pro, and Iris Plus branding. Now the Iris line sits in the middle, acting as Intel’s graphics focused products in the mid-power range.

For the launch today, Intel is lifting the lid on four separate Iris Plus-based processors. These all use the Coffee Lake microarchitecture and are built on Intel’s 14++ process. All four of these processors are in Intel’s ‘GT3e’ graphics configuration, which uses Intel’s Gen 9.5 graphics with 48 execution units (EUs) and 128 MB of eDRAM. This is compared to the GT2 configurations seen on most other processors, that have 24 EUs and zero eDRAM.

AnandTech Cores Base
L3 vPro DRAM
Core i7-8559U $431 4 / 8 2.7 4.5 8 MB No 2400 48 EUs 300 / 1200
Core i5-8269U $320 4 / 8 2.6 4.2 6 MB No 2400 48 EUs 300 / 1100
Core-i5-8259U $320 4 / 8 2.3 3.8 6 MB No 2400 48 EUs 300 / 1050
Core i3-8109U $304 2 / 4 3.0 3.6 4 MB No 2400 47 EUs 300 / 1000

Intel has split these new CPUs up into a single Core i7-8559U, which is a quad-core processor with the most L3 cache, two Core i5 parts that are also quad-core but have reduced L3 cache, and a Core i3-8109U processor that is dual core, but with the same amount of L3 cache per core as the Core i7-8559U.

In Intel’s manufacturing parlance, this means that the Core i7 and Core i5 are all ‘4+3e’ units, meaning four cores and GT3 graphics with eDRAM. By contrast, the Core i3 is a ‘2+3e’ processor, with only two cores but the same GT3e graphics with eDRAM as the i7/i5. Based on the design of these processors, the Core i3 sits as the lower binned part: it is manufactured as a 4+3e design, but due to processor defects is only suitable to run two cores. As with most of the other mobile processors, the higher performance parts often get the highest frequency graphics as well. In this case, the Core i7-8559U sits at the top at 1200 MHz.

For the eDRAM, in previous generations Intel has moved from going all parts at 128 MB to having some move down to 64 MB, but now moves back up to all of them having 128 MB again. For the eDRAM implementation, Intel is still using their second generation eDRAM implementation whereby the eDRAM acts as a L4 buffer for supplying the L3 from DRAM through the System Agent – this is compared to the first generation where the eDRAM was a victim cache. This methodology allows the eDRAM to speed up more use cases than just graphics, and the 50 GBps bidirectional bandwidth is certainly a big leap over main DRAM bandwidth (that some OEMs run in single channel mode anyway). Iris Plus processors can also be equipped with discrete graphics, although this is up to the OEM.

The 28W Iris Plus processors will match the other mobile counterparts on chipset, and support the new features such as integrated Intel 802.11ac Wi-Fi and native USB 3.1 (10 Gbps) support. We do not know to what extent these are supported, and are waiting on more information. The Iris Pro parts will also support Optane-accelerated storage.

High-Performance Mobile: Core i9 and Xeon E at 45W High-Performance Desktop: 65W to 35W Coffee Lake CPUs
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  • milkywayer - Tuesday, April 3, 2018 - link

    Disappointed to see no major desktop cpu releases. I want the next i7 in my workstation SFF. That along with the stuck-in-production GHOST S1 Or Dan Case A4 sff cases.
  • WinterCharm - Tuesday, April 3, 2018 - link

    Desktop will come much later... Intel always does this.

    Y and U series chips >> Mobile chips >> desktop chips.
  • DanNeely - Tuesday, April 3, 2018 - link

    Are you reading the same article I am?

    Page 4 has 20 (assuming I counted right) additional desktop parts as Intel's filled out the lineup started with a handful of mostly high end K parts last fall.
  • HStewart - Tuesday, April 3, 2018 - link

    I know desktop gamers will not like to hear this - but reality is the desktop market is shrinking and mobile market is where both where the money is at and is increasing performance so desktop market will go away one day.
  • Ratman6161 - Tuesday, April 3, 2018 - link

    There are a lot of us out here who actually do work on desktop PC's. Don't forget that gaming is not the only usage. There is no laptop that is going to replace my three 24 inch monitors :)
  • rahvin - Tuesday, April 3, 2018 - link

    I have a laptop with 3 independent screens, if I opened the laptop I would have 4 screens. The number of screens has nothing to do with desktop/laptop.
  • FunBunny2 - Tuesday, April 3, 2018 - link

    "The number of screens has nothing to do with desktop/laptop."

    it's the keyboard that is most different.
  • PeachNCream - Tuesday, April 3, 2018 - link

    USB ports.
  • kaidenshi - Tuesday, April 3, 2018 - link

    And at that point, why not just have a desktop PC? If it's a desk space issue, UCFF and SFF PCs can now rival full desktop performance. I guess there's the portability angle, you can take your "desktop" with you when you travel and work/game on the road. Otherwise, three large desktop monitors and USB or Bluetooth connected peripherals can be served equally well from a tower, UCFF PC, or a laptop.
  • Galid - Wednesday, April 4, 2018 - link

    Can you open your desktop while on a plane, at the hotel, etc... You really want to carry monitor + keyboard + wires +++ while travelling? Facts are there, desktop market is shrinking and laptops are now almost as powerful as a desktop for a couple hundred dollars more. Whatever is the reason behind that, it is happening. I personally own both. Laptop to game at work and desktop to work at home.

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