02:49PM EDT - Next up is AMD's Ryzen 4000 Renoir talk.

03:02PM EDT - Sonu Arora from AMD, AMD Fellow

03:02PM EDT - SoC architect

03:03PM EDT - Best notebook processor selling today

03:03PM EDT - First 8-core x86 for ultrathin notebooks

03:03PM EDT - Beaten goals we set for ourselves

03:03PM EDT - Evolution based on desire to break linear trend of performance

03:04PM EDT - Initially planned with 6 cores, but SoC/Power curves enabled 8 cores

03:04PM EDT - Made room for ST, MT, GPU, and Battery Life

03:04PM EDT - Renoir vs Picasso

03:04PM EDT - +25% ST, +200% MT, +27% GPU, 20% less SoC Power

03:05PM EDT - Decide how much to push ST without compromising GPU or Power

03:06PM EDT - Renoir is a complete SoC

03:06PM EDT - 8C/16T with 8MB L3

03:06PM EDT - 2nd gen Multimedia, 3rd gen Audio

03:07PM EDT - Added more IO to keep up with modern notebook requirements

03:07PM EDT - PCIe up from 16 to 20 in mobile package, 20 to 24 in desktop package

03:08PM EDT - Covered Zen 2 at Hot Chips last year

03:08PM EDT - 512 KB L2/core

03:08PM EDT - 4 cores in a core complex

03:09PM EDT - 2 core complexes into Renoir

03:10PM EDT - +15% IPC ST on top of +10% FMax

03:10PM EDT - Low power design methodology, can turn off segments when not in use

03:10PM EDT - Better idle-to-turbo latency

03:11PM EDT - Performance vs Intel's 10th Gen (Comet) at 15W and 45W

03:11PM EDT - Improved gaming experience

03:12PM EDT - Reduce CUs from 11 to 8, but higher frequency, better IPC, optimized devices for throughput and power, 77% higher peak bandwidth

03:12PM EDT - 2 render backends and 1MB L2 cache

03:12PM EDT - Optimize for pJ/bit

03:13PM EDT - -61% area vs 11CUs on 14nm, but +27% perf

03:13PM EDT - total 225% perf density on graphics

03:14PM EDT - Support DDR4-3200 and LPDDR4-4267

03:14PM EDT - 75% better power efficiency for Infinity Fabric

03:14PM EDT - Lot of time on the floor plan to reduce memory latency

03:15PM EDT - IF power gating focused for GPU bandwidth

03:16PM EDT - Renoir delivers CPU perf and GPU perf

03:16PM EDT - Different power states in Renoir in order to optimize exit/enter latency

03:16PM EDT - OS can decide to go to deeper low power states on lower idle

03:17PM EDT - (deeper sleep takes longer to reach peak power)

03:17PM EDT - 20% reduced SoC power

03:17PM EDT - aggressive L3 power gating

03:17PM EDT - lower power IOs

03:19PM EDT - STAPM uses system temperature in order to budget the turbo and boost

03:20PM EDT - 4x increase in boost duration

03:20PM EDT - Also simplifies OEM design for thermal boosting

03:20PM EDT - 3rd gen Audio

03:21PM EDT - Supports Native USB-C

03:21PM EDT - DP 1.4 with HBR3

03:21PM EDT - Four QHD60, or three QHD144

03:22PM EDT - next gen multimedia

03:22PM EDT - AMD Integrated Device Translation (AIDA)

03:22PM EDT - Enables Microsoft PlayReady with reduced UMA dedicated memory frame buffer

03:23PM EDT - AMD 25x20 energy efficiency initiative. AMD achieved 31.7x, beating 25x target from 2014

03:24PM EDT - Renoir built across 8 different AMD R&D Centers and offices

03:24PM EDT - Q&A time

03:27PM EDT - Q: Melt, Spectre? A: Melt doesn't impact AMD. Zen 2 has hardware mitigations for Spec v2/v4. Added Guest mode execution, virtualization security, IOMMU throughput, TME

03:29PM EDT - Q: 8 cores in this size, trade offs? A: We wanted to provide the 8 core perf, and as we analyzed with 7nm that if we took care we could enable 8 cores. Lots of content creation takes advantage of 8 cores. These come in handy with high perf applications. On the GPU, we were also careful in perf/watt and perf/mm2 that we can drive. We figured out in 7nm we could get higher frequency, so we balanced resources and that's why we went for 8 CUs. Vega with mem bandwidth gives better UX in 15W

03:30PM EDT - Next rpesentation is Tiger Lake!

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  • frbeckenbauer - Monday, August 17, 2020 - link

    and already the first interesting thing I didn't know, that it was originally planned as a hexacore. That might explain the overly cautious deployment in lower end devices than appropriate for the incredible performance. Reply
  • neblogai - Monday, August 17, 2020 - link

    They were speaking of ultrathin laptops there, so I undestand that only SKUs for U-series would go up to 6 cores, even if the die was an 8-core.
    As for the laptops being 'lower end'- that is probably due to AMD's image in laptops, and selling power when it comes to laptop buyers, as well as very few financial 'incentives' from AMD to make premium devices. Still, Renoir is not present only in very high end (but should be soon- with MS device(s)). But there are not that many entry tier devices with Renoir either. Most are right at the midrange/the sweet spot.
    Reply
  • RollingCamel - Wednesday, August 19, 2020 - link

    AMD 10-K annual report specifies that 2019 growth was driven by a 22% increase in average unit price and an increase of 4% in units shipment. Reply
  • brantron - Monday, August 17, 2020 - link

    I had wondered about that. Hexacore with a single core complex and larger L3 cache at least sounded better on paper.

    But turns out it's fine the way it is. Desktop Renoir at high clocks will be hard to tell apart from anything else, a first for AMD's APUs.

    Probably some benefit to mass producing one die for everything, as well.
    Reply
  • scineram - Tuesday, August 18, 2020 - link

    My reading of the Q&A is it was always this die, but they expected to only enable 6 cores. Reply
  • JayNor - Monday, August 17, 2020 - link

    Is there some difference in meaning between the white decode and orange decode info in the next gen multimedia slide at 3:22? Reply
  • Ian Cutress - Monday, August 17, 2020 - link

    orange = 4k Reply
  • kenansadhu - Tuesday, August 18, 2020 - link

    Any news on Zen 3 mobile? Is it going to launch anytime soon? Reply
  • yeeeeman - Tuesday, August 18, 2020 - link

    nope Reply
  • shabby - Tuesday, August 18, 2020 - link

    Zen 2 mobile just launched, maybe next year. Reply

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