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posted by martyb on Tuesday June 11 2019, @04:47AM   Printer-friendly
from the Good-Fast-AND-Cheap[er-than-Intel] dept.

At AMD's keynote at the 2019 Electronic Entertainment Expo (E3), AMD CEO Lisa Su announced three new "7nm" Navi GPUs and a new CPU.

The AMD Radeon RX 5700 XT will have 2560 stream processors (40 compute units) capable of 9.75 TFLOPs of FP32 performance, with 8 GB of 14 Gbps GDDR6 VRAM. The price is $449. The AMD RX 5700 cuts that down to 2304 SPs (36 CUs), 7.9 TFLOPs, at $379. There is a higher clocked "50th anniversary" version of the 5700 XT that offers up to 10.14 teraflops for $499. A teraflop on one of these new cards supposedly means better graphics performance than older Polaris-based GPUs:

Looking at these clockspeed values then, in terms of raw throughput the new card is expected to get between 9 TFLOPs and 9.75 TFLOPs of FP32 compute/shading throughput. This is a decent jump over the Polaris cards, but on the surface it doesn't look like a huge, generational jump, and this is where AMD's RDNA architecture comes in. AMD has made numerous optimizations to improve their GPU utilization – that is, how well they put those FLOPs to good use – so a teraflop on a 5700 card means more than it does on preceding AMD cards. Overall, AMD says that they're getting around 25% more work done per clock on the whole in gaming workloads. So raw specs can be deceiving.

The GPUs do not include real-time raytracing or variable rate pixel shading support. These may appear on a future generation of GPUs. Instead, AMD talked about support for DisplayPort 1.4 with Display Stream Compression, a contrast-enhancing post-processing filter, AMD Radeon Image Sharpening, and a Radeon Anti-lag feature to reduce input lag.

Towards the end of the presentation, AMD revealed the 16-core Ryzen 9 3950X, the company's fully-fledged Ryzen CPU with two 8-core "7nm" Zen 2 chiplets. Compared to the 12-core Ryzen 9 3900X CPU, the 3950X has a slightly higher boost clock and L2 cache, with the same 105 Watt TDP, for $749. This is the full lineup so far:

CPUCores / ThreadsFrequencyTDPPrice
Ryzen 9 3950X16 / 323.5 - 4.7 GHz105 W$749
Ryzen 9 3900X12 / 243.8 - 4.6 GHz105 W$499
Ryzen 7 3800X8 / 163.9 - 4.5 GHz105 W$399
Ryzen 7 3700X8 / 163.6 - 4.4 GHz65 W$329
Ryzen 5 3600X6 / 123.8 - 4.4 GHz95 W$249
Ryzen 5 36006 / 123.6 - 4.2 GHz65 W$199

Previously: AMD and Intel at Computex 2019: First Ryzen 3000-Series CPUs and Navi GPU Announced


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  • (Score: 2) by bobthecimmerian on Thursday June 13 2019, @12:44PM (1 child)

    by bobthecimmerian (6834) on Thursday June 13 2019, @12:44PM (#855106)

    I use a Khadas Vim 2 Android box with Kodi to stream my films to the living room TV. It has hardware-accelerated H.265 decoding. Since it's two or three years old and AV1 only came out in March 2018 I'm pretty sure it doesn't have AV1 support. That's why I went with H.265. I should rip something AV1 and try it just in case.

    H.265 also streams nicely to Android devices running version 6 or newer. Or maybe even 5, I don't remember.

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  • (Score: 2) by takyon on Thursday June 13 2019, @01:37PM

    by takyon (881) <reversethis-{gro ... s} {ta} {noykat}> on Thursday June 13 2019, @01:37PM (#855123) Journal

    I'm aware that absolutely nothing has AV1 hardware decode/encode support at this time.

    I think this is the latest GPU media decoder info announced (out of Intel, AMD, Nvidia, ARM, etc.):

    https://www.tomshardware.com/news/amd-navi-radeon_rx_5700_xt-rx_5700-details,39608.html [tomshardware.com]
    https://www.techpowerup.com/256481/amd-navi-radeon-display-engine-and-multimedia-engine-detailed [techpowerup.com]
    https://www.techpowerup.com/img/cf96IBWB2r9zYZ25.jpg [techpowerup.com]

    So AMD Navi multimedia engine decodes:

    VP9: 4K90, 8K24
    H.264: 1080p600, 4K150
    H.265: 1080p360, 4K90, 8K24

    Kind of surprising since the ARM Mali-V76 GPU [anandtech.com] with maximum 8 cores is supposed to be able to decode 8K60. That was announced last year. 8K24 is really anemic. While a lot of people don't care about 8K decoding, improvements of that level could be applicable to high-resolution+bitrate VR video. So there is a reason to keep pushing the envelope.

    But back on topic: No AV1 decode support means a hard pass from me (for any new device). I watch a lot of YouTube and you can be sure Google will be an early adopter. It will also be interesting to see how fast anime and "The Scene" rippers adopt it. It's the open and royalty free option and using it sticks it to MPEG. It's generally accepted that it will be superior to H.265/HEVC (probably somewhere between 10-30% smaller files/bitrates at same quality).

    https://en.wikipedia.org/wiki/AV1 [wikipedia.org]

    The performance goals include "a step up from VP9 and HEVC" in efficiency for a low increase in complexity. NETVC's efficiency goal is 25% improvement over HEVC. The primary complexity concern is for software decoding, since hardware support will take time to reach users. However, for WebRTC, live encoding performance is also relevant, which is Cisco's agenda: Cisco is a manufacturer of videoconferencing equipment, and their Thor contributions aim at "reasonable compression at only moderate complexity".

    Feature wise, it is specifically designed for real-time applications (especially WebRTC) and higher resolutions (wider color gamuts, higher frame rates, UHD) than typical usage scenarios of the current generation (H.264) of video formats where it is expected to achieve its biggest efficiency gains. It is therefore planned to support the color space from ITU-R Recommendation BT.2020 and up to 12 bits of precision per color component. AV1 is primarily intended for lossy encoding, although lossless compression is supported as well.

    AV1-based containers have also been proposed as a replacement for JPEG, similar to Better Portable Graphics and High Efficiency Image File Format which wrap HEVC.

    Bunch of cool stuff involved.

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