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
Freq
Turbo
Freq
L3 vPro DRAM
DDR4
iGPU
EUs
iGPU
Freq
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
POST A COMMENT

124 Comments

View All Comments

  • HStewart - Saturday, April 07, 2018 - link

    A lot of this dependent on how the OS is written and how designed of system. Having two different systems is typically better than a single system - because even though systems has advance in number of cores. The major limiting factor is IO on systems

    You can always get by with one PC but you will still be single threaded with IO for example disk storage. Yes applications can be multithread in designed but when it finally goes to write it to storage - the problem is that area must be handle serially eventually. Similar aspects happen in video - but todays video maybe handle some what especially if more than one monitor is involved.
    Reply
  • Nozuka - Tuesday, April 03, 2018 - link

    wow their lineup is such a mess now... Reply
  • close - Tuesday, April 03, 2018 - link

    And the mess doesn't stop there:
    "It is worth noting that the 35W TDP value is only valid when the CPU is at its base frequency, which in this case is 2.4 GHz"

    So... a meaningless figure. Might as well go with "0W TDP... but only valid when completely off".
    Reply
  • euskalzabe - Tuesday, April 03, 2018 - link

    Yup! Reply
  • goatfajitas - Tuesday, April 03, 2018 - link

    Yeah, that chart on page 1 says it all. The 8th gen is a huge mess. Fortunately for Intel, most of their customers only know "i7 = best" and buy it anyhow. Reply
  • Ratman6161 - Tuesday, April 03, 2018 - link

    I know all about that. Last year we bought a round of thin and light laptops where the users were stamping their feet and insisting they needed i7's. At first I tried hard to explain to them that in the 7th gen mobile "U" cpu's there was practically no difference (and definitely no difference they would notice) between an i7U and an i5U. We bought the i5's and they were P.O'd but they wouldn't have been happy no matter what we gave them. I was very sorely tempted to order a set of Intel i7 Inside stickers to put on them - you can actually buy them on Amazon:) Reply
  • Icehawk - Thursday, April 05, 2018 - link

    My manager just didn’t understand why I said buying an i7 laptop doesn’t solve our performance problems - we aren’t ordering the 4 core model, not sure why our vendor hasn’t tried to upsell at least. Yes, I want some fries with that dammit. Reply
  • Chaitanya - Tuesday, April 03, 2018 - link

    Stupid marketing of i7+ , what's next brainfart from this marketing team? Reply
  • goatfajitas - Tuesday, April 03, 2018 - link

    Actually the issues were process related and continued delays on 10nm parts... The marketing is a BS reaction to try and sell more parts and "slap some lipstick on that pig". Most of their customers don't know or care about the differences, they just want the current "i5" or "i7" part and buy it. Reply
  • nukunukoo - Tuesday, April 03, 2018 - link

    Here's to hoping for a surprise 6-core, 32GB Macbook Pro this year... Reply

Log in

Don't have an account? Sign up now