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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  • serendip - Tuesday, April 3, 2018 - link

    8th gen is whatever we want it to be!

    Seriously, the number of 8th gen architectures in that table is just ridiculous. Is Intel doing this out of desperation? Even Samsung stopped the shotgun approach to marketing a while back.
  • boeush - Tuesday, April 3, 2018 - link

    I just have to officially come out in defense of even numbers. The blatant, years-long entrenched odd-itism in Intel's CPU model branding is starting to get beyond ridiculous. Yes, I know that 3, 5, 7 and 9 are really cool and everything - but why do we, the consumers, continue to act indifferently when confronted with such odious, manifest prejudice against 2, 4, 6, 8, and 10? Even numbers matter too!
  • sorten - Wednesday, April 4, 2018 - link

    wake me up when 10nm is available
  • FunBunny2 - Wednesday, April 4, 2018 - link

    if you mean 10nm in X,Y,Z top to bottom... well you'll put Rip Van Winkle to shame. it's never going to happen Heisenberg wins.
  • zepi - Wednesday, April 4, 2018 - link

    Where is my LPDDR4 support?!

    I want more memory without destroying standby life.
  • 0ldman79 - Wednesday, April 4, 2018 - link

    Did they change the Kaby Lake to be electrically compatible with the Coffee Lake when the named them as part of the 8000 series?
  • r3loaded - Friday, April 6, 2018 - link

    Trying to understand Intel's product line-up makes my head hurt :(
  • araczynski - Monday, April 9, 2018 - link

    I must have been doing it wrong all these years. I specifically have 4 SSDs in my rig FOR games (and OS of course), the spinners are there for infrequently accessed dumb data storage/backups.
  • ezekiel68 - Tuesday, April 10, 2018 - link

    Grrr special place in hades for marketeers who designate a chip as "I9" with no AVX-512. At least from what I can read on the ARK page at

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