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Tópico: AMD Navi GPUs

  1. #166
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    AMD Big Navi Performance Claims Compared to TPU's Own Benchmark Numbers of Comparable GPUs


    AMD in its October 8 online launch event for the Ryzen 5000 "Zen 3" processors, provided a teaser of the company's next flagship graphics card slotted in the Radeon RX 6000 series. This particular SKU has been referred to by company CEO Lisa Su as "Big Navi," meaning it could be the top part from AMD's upcoming client GPU lineup. As part of the teaser, Su held up the reference design card, and provided three performance numbers of the card as tested on a machine powered by a Ryzen 9 5900X "Zen 3" processor. We compared these performance numbers, obtained at 4K UHD, with our own testing data for the games, to see how the card compares to other current-gen cards in its class. Our testing data for one of the games is from the latest RTX 30-series reviews, find details of our test bed here. We obviously have a different CPU since the 5900X is unreleased, but use the highest presets in our testing.

    With "Borderlands 3" at 4K, with "badass" performance preset and DirectX 12 renderer, AMD claims a frame-rate of 61 FPS. We tested the game with its DirectX 12 renderer in our dedicated performance review (test bed details here). AMD's claimed performance ends up 45.9 percent higher than that of the GeForce RTX 2080 Ti as tested by us, which yields 41.8 FPS on our test bed. The RTX 3080 ends up 15.24 percent faster than Big Navi, with 70.3 FPS. It's important to note here that AMD may be using a different/lighter test scene than us, since we don't use internal benchmark tools of games, and design our own test scenes. It's also important to note that we tested Borderlands 3 with DirectX 12 only in the game's launch-day review, and use the DirectX 11 renderer in our regular VGA reviews



    With Gears 5, AMD claims performance of 73 FPS at 4K, with its DirectX 12 renderer, with the "Ultra" preset. This number ends up 16.24 percent faster than that of the RTX 2080 Ti, which scores 62.8 FPS on our test bed. The RTX 3080 is 15.61 percent faster than the AMD card, at 84.4 FPS.

    Call of Duty: Modern Warfare was never added to our VGA review test selection, but we tested the game separately at launch (find its test bed information here). In this testing, we found the RTX 2080 Ti to score 77.9 FPS at Ultra Settings, with RTX-off. In comparison, AMD claims Big Navi scores 88 FPS, making it 12.96 percent faster.

    We know this is a very coarse and unscientific way to compare AMD's numbers to ours, and AMD has probably cherry-picked games that are most optimized to its GPUs, but it lends plausibility to a theory that Big Navi may end up comparable to the RTX 2080 Ti, and trade blows with the upcoming RTX 3070, which NVIDIA claims outperforms the RTX 2080 Ti. The RX 6000 "Big Navi" ends up with a geometric mean of 21% higher frame-rates than the RTX 2080 Ti in these three tests, which would imply almost double the performance of the RX 5700 XT. Big Navi is rumored to feature double the CUs as the the RX 5700 XT, so the claims somewhat line up.
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  2. #167
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    AMD RDNA2 Graphics Architecture Features AV1 Decode Hardware-Acceleration



    AMD's RDNA2 graphics architecture features hardware-accelerated decoding of the AV1 video format, according to a Microsoft blog announcing the format's integration with Windows 10. The blog mentions the three latest graphics architectures among those that support the format—Intel Gen12 Iris Xe, NVIDIA RTX 30-series "Ampere," and AMD RX 6000-series "RDNA2." The AV1 format is being actively promoted by major hardware vendors to online streaming content providers, as it offers 50% better compression than the prevalent H.264 (translating into that much bandwidth savings), and 20% better compression than VP9. You don't need these GPUs to use AV1, anyone can use it with Windows 10 (version 1909 or later), by installing the AV1 Video Extension from the Microsoft Store. The codec will use software (CPU) decode in the absence of hardware acceleration.
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    AMD Radeon RX 6000 Series "Big Navi" GPU Features 320 W TGP, 16 Gbps GDDR6 Memory



    AMD is preparing to launch its Radeon RX 6000 series of graphics cards codenamed "Big Navi", and it seems like we are getting more and more leaks about the upcoming cards. Set for October 28th launch, the Big Navi GPU is based on Navi 21 revision, which comes in two variants. Thanks to the sources over at Igor's Lab, Igor Wallossek has published a handful of information regarding the upcoming graphics cards release. More specifically, there are more details about the Total Graphics Power (TGP) of the cards and how it is used across the board (pun intended). To clarify, TDP (Thermal Design Power) is a measurement only used to the chip, or die of the GPU and how much thermal headroom it has, it doesn't measure the whole GPU power as there are more heat-producing components.

    So the break down of the Navi 21 XT graphics card goes as follows: 235 Watts for the GPU alone, 20 Watts for Samsung's 16 Gbps GDDR6 memory, 35 Watts for voltage regulation (MOSFETs, Inductors, Caps), 15 Watts for Fans and other stuff, and 15 Watts that are used up by PCB and the losses found there. This puts the combined TGP to 320 Watts, showing just how much power is used by the non-GPU element. For custom OC AIB cards, the TGP is boosted to 355 Watts, as the GPU alone is using 270 Watts. When it comes to the Navi 21 XL GPU variant, the cards based on it are using 290 Watts of TGP, as the GPU sees a reduction to 203 Watts, and GDDR6 memory uses 17 Watts. The non-GPU components found on the board use the same amount of power.
    When it comes to the selection of memory, AMD uses Samsung's 16 Gbps GDDR6 modules (K4ZAF325BM-HC16). The bundle AMD ships to its AIBs contains 16 GB of this memory paired with GPU core, however, AIBs are free to put different memory if they want to, as long as it is a 16 Gbps module. You can see the tables below and see the breakdown of the TGP of each card for yourself
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    Resumindo:
    Permite partilha de dados entre as cache L1, deixando estas de serem privadas a cada shader.
    Existe um interconnect a ligar todas as caches L1.
    Em algumas aplicações, resulta numa perda de desempenho de 4%, mas noutras chega a ter um aumento de desempenho de 54%.
    A média resulta num aumento de IPC de 22%.
    Não está confirmado que já esteja implementado nas RDNA2, mas iremos descobrir no dia 28.
    Última edição de Winjer : 22-10-20 às 13:10
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  7. #170
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    Citação Post Original de Winjer Ver Post


    Resumindo:
    Permite partilha de dados entre as cache L1, deixando estas de serem privadas a cada shader.
    Existe um interconnect a ligar todas as caches L1.
    Em algumas aplicações, resulta numa perda de desempenho de 4%, mas noutras chega a ter um aumento de desempenho de 54%.
    A média resulta num aumento de IPC de 22%.
    Não está confirmado que já esteja implementado nas RDNA2, mas iremos descobrir no dia 28.
    Boas!
    Estive a ver e o vídeo explica bem o funcionamento do tal infinity Cache L1.
    Agora vamos a ver se como dizes e bem, o mesmo foi implementado nas RDNA2 ou se é para implementar na próxima arquitectura.

    Não á meio de chegar ao dia do lançamento das gráficas...

    Cumprimentos,

    LPC
    My Specs: .....
    CPU: AMD Ryzen 5 3600 - 4.3Ghz @ 1.30v - Board: MSI AMD B450M Mortar MAX - RAM: 16 GB DDR4 G.Skill RipJaws V 3200Mhz CL14 - GPU: MSI AMD Radeon RX 5700XT Gaming X 8GB - Monitor: BenQ EW3270U 4k HDR
    Case: Tt Core V21 - Cooling: 5x Arctic Cooling P14 PWM PST - CPU Cooler: Alphacool Eisbaer 240 + 2x GT AP-15 - Storage: ADATA XPG SX8200 Pro NVMe 1TB + WD SN520 NVMe 512GB - PSU: Corsair HX1200i 1200W

  8. #171
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    Este estudo foi feito com cálculos científicos, tipo neural networks e biologia molecular.
    Por isso, até pode ser o tipo de coisa que será mais virada para as CDNA do que para as RDNA.
    Não sei até que ponto teremos benefícios destes em jogos.

    Por outro lado, dos rumores que se fala das 6700XT, estas têm apenas um bus de 256 bits com GDDR6.
    Isto é muito pouco para uma gráfica com 80 CUs,e talvez 20+ TFLOPs.
    Esta infinity cache, teoricamente, reduz bastante a necessidade de ir buscar dados á vram, o que reduz a necessidade de um bus muito largo e memória mais rápida.

    Temos de esperar até ao dia 28. São só mais 6 dias...
    Ryzen R5 3600X / Noctua NH-D15 / ASUS Rog Strix X370 / Cooler Master H500 Mesh / 16Gb DDR4 @ 3800mhz CL16 / Gigabyte RTX 2070 Super / Seasonic Focus GX 750W / Sabrent Q Rocket 2 TB / Crucial MX300 500Gb + Samsung 250Evo 500Gb / Edifier R1700BT

  9. #172
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    3DMark in Ultra-HD – Benchmarks of the RX 6800XT with and without Raytracing appeared



    Não está nada confirmado, mas a ser verdade, as capacidades de ray tracing destas RDNA2 até estão boas.
    Igualar uma 2080 Ti não é nada mal.
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  11. #173
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    Boas!
    Penso que já escolhi para mim as 2 prendas de natal...


    5900x
    e
    6900xt




    Cumprimentos,

    LPC
    My Specs: .....
    CPU: AMD Ryzen 5 3600 - 4.3Ghz @ 1.30v - Board: MSI AMD B450M Mortar MAX - RAM: 16 GB DDR4 G.Skill RipJaws V 3200Mhz CL14 - GPU: MSI AMD Radeon RX 5700XT Gaming X 8GB - Monitor: BenQ EW3270U 4k HDR
    Case: Tt Core V21 - Cooling: 5x Arctic Cooling P14 PWM PST - CPU Cooler: Alphacool Eisbaer 240 + 2x GT AP-15 - Storage: ADATA XPG SX8200 Pro NVMe 1TB + WD SN520 NVMe 512GB - PSU: Corsair HX1200i 1200W

  12. #174
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    Pelos últimos rumores parece que a GPU da PS5 será idêntica a uma RX6700 e a GPU da XBOX uma RX6800 "capada".
    Se assim for, ainda é um diferençazinha.

    https://canaltech.com.br/hardware/ra...da-amd-173375/

  13. #175
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    Citação Post Original de LPC Ver Post
    Boas!
    Penso que já escolhi para mim as 2 prendas de natal...


    5900x
    e
    6900xt




    Cumprimentos,

    LPC
    Isso é um aviso para estarmos atentos aos classificados?
    Be Cool, Be Nice Like Me & You

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  15. #176
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    Boas!
    Penso que já escolhi para mim as 2 prendas de natal...


    5900x
    e
    6900xt




    Cumprimentos,

    LPC
    Isso vai ser muito vermelho camarada!
    Ryzen R5 3600X / Noctua NH-D15 / ASUS Rog Strix X370 / Cooler Master H500 Mesh / 16Gb DDR4 @ 3800mhz CL16 / Gigabyte RTX 2070 Super / Seasonic Focus GX 750W / Sabrent Q Rocket 2 TB / Crucial MX300 500Gb + Samsung 250Evo 500Gb / Edifier R1700BT

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  17. #177
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    Isso vai ser muito vermelho camarada!
    Muito mesmo....

    Já tenho até os leds da board vermelhos e tudo...

    Comrade!

    Cumprimentos,

    LPC
    My Specs: .....
    CPU: AMD Ryzen 5 3600 - 4.3Ghz @ 1.30v - Board: MSI AMD B450M Mortar MAX - RAM: 16 GB DDR4 G.Skill RipJaws V 3200Mhz CL14 - GPU: MSI AMD Radeon RX 5700XT Gaming X 8GB - Monitor: BenQ EW3270U 4k HDR
    Case: Tt Core V21 - Cooling: 5x Arctic Cooling P14 PWM PST - CPU Cooler: Alphacool Eisbaer 240 + 2x GT AP-15 - Storage: ADATA XPG SX8200 Pro NVMe 1TB + WD SN520 NVMe 512GB - PSU: Corsair HX1200i 1200W

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  19. #178
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    Hoje temos o evento da apresentação das RDNA2, ás 16:00 horas.

    https://www.amd.com/de/events/gaming-2020
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  21. #179
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    Hoje temos o evento da apresentação das RDNA2, ás 16:00 horas.

    https://www.amd.com/de/events/gaming-2020
    Boas!
    O dia esperado.

    A ver se não me esqueço de ver a apresentação...

    Cumprimentos,

    LPC
    My Specs: .....
    CPU: AMD Ryzen 5 3600 - 4.3Ghz @ 1.30v - Board: MSI AMD B450M Mortar MAX - RAM: 16 GB DDR4 G.Skill RipJaws V 3200Mhz CL14 - GPU: MSI AMD Radeon RX 5700XT Gaming X 8GB - Monitor: BenQ EW3270U 4k HDR
    Case: Tt Core V21 - Cooling: 5x Arctic Cooling P14 PWM PST - CPU Cooler: Alphacool Eisbaer 240 + 2x GT AP-15 - Storage: ADATA XPG SX8200 Pro NVMe 1TB + WD SN520 NVMe 512GB - PSU: Corsair HX1200i 1200W

  22. #180
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    Stream no Youtube

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