One of the surprises from AMD’s first year of the newest x86 Zen architecture was the launch of the Threadripper platform. Despite the mainstream Ryzen processors already taking a devastating stab into the high-end desktop market, AMD’s Threadripper offered more cores at a workstation-friendly price. For 2018, the next generation is going to be using AMD’s updated 12nm Zeppelin dies, as well as including a few new tweaks into the system including better boost and faster caches.

This article is still a work in progress, and will be updated as more news comes in.

AMD’s Zeppelin silicon has 8 cores, and the first generation Threadripper uses two of them to get to the top-SKU of 16-cores. Inside the CPU however, there are four pieces of silicon: two active and two inactive. For this second generation of Threadripper, called Threadripper 2 or the Threadripper 2000-series, AMD is going to make these inactive dies into active ones, and substantially increase the core count for the high-end desktop and workstation user.

At the AMD press event at Computex, it was revealed that these new processors would have up to 32 cores in total, mirroring the 32-core versions of EPYC. On EPYC, those processors have four active dies, with eight active cores on each die (four for each CCX). On EPYC however, there are eight memory channels, and AMD’s X399 platform only has support for four channels. For the first generation this meant that each of the two active die would have two memory channels attached – in the second generation Threadripper this is still the case: the two now ‘active’ parts of the chip do not have direct memory access.

This technically adds latency to the platform, however AMD is of the impression that for all but the most memory bound tasks, this should not be an issue (usually it is suggested to just go buy an EPYC for those workloads). While it does put more pressure on the internal Infinity Fabric, AMD ultimately designed Infinity Fabric for scalable scenarios like this between different silicon with different levels of cache and memory access.

Update: AMD has just published a full copy of their slide deck for the Threadripper 2 presentation. In it are a few interesting factoids.

AMD Threadripper CPUs
  Threadripper
2
32-Core Sample
Threadripper
2
24-Core Sample
Threadripper
1950X
Threadripper
1920X
Socket TR4 (LGA)
4094-pin
CPU Architecture Zen+ Zen+ Zen Zen
Cores/Threads 32 / 64 24 / 48 16 / 32 12 / 24
Base Frequency 3.0 GHz 3.0 GHz 3.4 GHz 3.5 GHz
Turbo Frequency 3.4 GHz (WIP) 3.4 GHz (WIP) 4.0 GHz 4.0 GHz
L3 Cache 64 MB ? 48 MB ? 32 MB 32 MB
TDP 250W 250W 180W 180W
PCIe 3.0 Lanes 60 + 4
Chipset Support X399
Memory Channels 4
  1. Both the 24-core and 32-core sample CPUs are clocked at 3.0GHz base and 3.4GHz all-core turbo, with the latter being a work-in-progress according to the company.
  2. The 32-core system was equipped with DDR4-3200 memory. This is notable because the Ryzen processors based on the same 12nm Zeppelin dies officially max out at DDR4-2933.
  3. The codename for the processor family is listed as "Colfax". This is the first we've heard this codename from AMD.
  4. Despite the high TDP, both CPUs used in AMD's demos were air-cooled, using AMD's Wraith Ripper Air Cooler

Also announced at the presentation is the state of play of motherboards. According to the motherboard vendors These new Threadripper 2000-series processors will have a peak TDP rating of 250W, which is much higher than 180W we saw on the 1950X. We have been told by partners that the 250W rating is actually conservative, and users should expect lower power consumption in most scenarios. Nonetheless, it was stated by several motherboard vendors that some of the current X399 motherboards on the market might struggle with power delivery to the new parts, and so we are likely to see a motherboard refresh. That is not saying that the current X399 offerings will not work, however they might not offer overclocking to the level that users might expect. At Computex there are new X399 refresh motherboards being demonstrated by a few companies, and we will report on them in due course. Other specifications are expected to match the previous generation, such as PCIe lane counts, despite the newly active dies.


MSI's 19-phase X399 Refresh Motherboard

The launch for these new processors, according to our moles is in early August. This aligns with what AMD stated at the beginning of the year at CES, and is almost a year from the original Threadripper launch.

Pricing on the processors is set to be revealed either today or closer to the launch time. We will update this piece as more information comes in.

It will be interesting if AMD is going to go through the ‘unboxing’ embargo this time around, or just jump straight to full performance reviews. As always, come to AnandTech for the full story.


GIGABYTE's new X399 Refresh Motherboard

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  • The Benjamins - Tuesday, June 5, 2018 - link

    They beat the 7890xe on a CLC with the 24c TR 2000 on a air cooler. Reply
  • shabby - Wednesday, June 6, 2018 - link

    It's kind of like that race to 1ghz back in the day... Intel got there first but then came the recall. Reply
  • 0ldman79 - Wednesday, June 6, 2018 - link

    Someone else is old enough to remember!! Reply
  • ilt24 - Wednesday, June 6, 2018 - link

    As I remember it, AMD knew the date Intel was going to release it's 1Ghz chips and did a quick release a few days before so they could say first to 1Ghz. Intel's 1Ghz chip worked fine, it was their 1.13Ghz Intel had to recall.

    AMD was able to get it's 180nm Athlon's up to 1.4Ghz while Intel's P3 was stuck at 1.0Ghz until they got to 130nm.
    Reply
  • drexnx - Wednesday, June 6, 2018 - link

    the palomino Athlon XPs were still .18u (remember when it was point (number) micron?) and they got up to what, 1733mhz? Reply
  • 0ldman79 - Wednesday, June 6, 2018 - link

    Technically they only hit 1400MHz, they were "PR Rated 1733".

    I had a 2400+ that was overclocked from 2GHz to 2.2.
    Reply
  • dr.denton - Sunday, June 10, 2018 - link

    0,18µ Palomino went up to 1,733Ghz, which made it a "2100+".

    There never was a "1733+", only a "1700+", running at 1,46Ghz.
    Confusing, I know ^^
    Reply
  • 0ldman79 - Wednesday, June 6, 2018 - link

    Intel released the Coppermine 180nm (.18 micron for those of us around at the time) @ 1.13GHz. At 1GHz they bumped the voltage from the stock 1.65v to 1.75v to get it stable, not a big deal. At 1.13GHz I believe before it was over the chips were run at 1.85v (I think the initial release was 1.75v) and there were a few refunds and replacements.

    The .13 micron Tualatin came out shortly there after, but Intel had already burned a lot of the customers that were excited about the new CPUs and AMD gobbled them up.

    As good as the Tualatin was (it was an excellent replacement for the Coppermine) the sales numbers were terribly small. They were pushing the P4 by the time they release the Tualatin and regardless of the T being faster than the P4 the OEMs were pushing the new architecture hard.

    It was pretty much a small subset of nerds that new about the Tualatin that hadn't already jumped to AMD that bought them.

    I did get my hands on a few 1GHz Tualatin and I *think* I even saw a 933 or 966 Tualatin in the wild. I have a 1.4GHz Tualatin in storage somewhere. One day I'll have to dig out my old hardware and run benchmarks that will run on old to modern just for the sheer hell of it.
    Reply
  • 0ldman79 - Wednesday, June 6, 2018 - link

    It was rather heartbreaking looking at the 1.7GHz Williamette Celeron that someone had bought over the 1.4GHz Tualatin because it had a faster clock speed.

    128MB of RDRAM for $600 vs 256MB of PC133 for $240...
    Reply
  • dr.denton - Sunday, June 10, 2018 - link

    Couple of months back I had this impulse to build a kind of retro gaming system with only "underdog" components. Tualatin, maybe a Kyro 2 ... something like that.

    Got 3 (!) PIII-S 1,13Ghz for 3$ on eBay. But then I saw the prices for decent i815 mainboards and gave away the CPUs for free :D
    Reply

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