AMD Reveals Threadripper 2 : Up to 32 Cores, 250W, X399 Refreshby Ian Cutress on June 5, 2018 11:05 PM EST
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|
|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|
|PCIe 3.0 Lanes||60 + 4|
- 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.
- 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.
- The codename for the processor family is listed as "Colfax". This is the first we've heard this codename from AMD.
- 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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TennesseeTony - Saturday, June 9, 2018 - link"Pricing on the processors is set to be revealed either today or closer to the launch time. "
Utterly nailed the date! Excellent prediction!
Oberoth - Sunday, June 10, 2018 - linkI can't help but feel AMD should have skipped 12nm for TR and gone straight to 7nm as early as they could if the 3GHz clock is true as for all but the massively threaded applications this CPU will be slower than first generation. Although i see no reason why it wouldn't be able to clock as high as 2700x if its only using a few cores.
Targon - Monday, June 11, 2018 - link2018 for AMD is still 12nm, with a few 7nm Vega cards for the AI market being sold at the end of 2018. 2019 will be 7nm. Would you rather AMD not release ANY updated Threadripper in 2018 just because 7nm comes out next year?
AutomaticTaco - Monday, June 11, 2018 - link12nm? What happened to the next Threadripper or Ryzen going 7nm or 10nm? Just curious.
Targon - Monday, June 11, 2018 - link2018 is 12nm, with 2019 chips being 7nm. 2017 was Zen cores, 2018 with 12nm is Zen+ cores(just some minor improvements to the design, not big changes). 2019 will bring Zen 2 cores with more significant improvements combined with 7nm. I will note that 7nm will start to ramp up production, the limited volume 7nm Vega AI cards with up to 32GB of video memory will come out at the end of 2018, but obviously, those will not be high volume parts.