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  1. #1411
    Moderador Avatar de Winjer
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    FMA4 instruction set hidden, but is working on AMD Zen processors

    In an interesting find, it has been discovered that AMD processors based on ZEN architecture actually support the latest iteration of FMA, the FMA4-instruction set. The theory is that the FMA3 supplement instruction set would have been disabled for unknown reasons, however as it seems, it at the very least is partially working and active.
    FMA is short for fused multiply-add and was added to the 2012 AMD FX series processors and have seen iteration changes leading up-tp FMA 3 and FMA4. FMA is a floating-point multiply-add operation performed in a single step, with a single rounding. It is the equivalent of the Intel AVX AVX instruction set, but more efficient and FMA4 should be really fast. Officially FMA4 is 33% faster than FMA3, however, it is not supported in the operating system, likely it was left disabled due to bugs or perhaps stability issues as hey, there is a primary reason for it to remain disabled.

    As it now seems, Level1Techs tested this with Zen processors by running an adapted script that sends FMA4 instructions to the processor. The FMA4 task fired off at the processor surprisingly did not get refused and got executed successfully. It's an interesting find. Meanwhile, CPUID still states it is not supported/detected.
    Uma descoberta interessante que poderá melhorar o desempenho dos Ryzen em algumas aplicações.
    Resta saber porque é que a AMD não as activou aquando do lançamento dos Ryzen.

  2. #1412
    Tech Bencher Avatar de reiszink
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    Intel i7 5820K - ASRock X99M Killer - 16GB G.Skill DDR4 - Gigabyte GTX 980Ti G1 - Plextor M6e 256GB + Samsung 850 EVO 500GB - Corsair H110 - EVGA G3 750W - Acer 27" 144Hz IPS - Zowie EC2-A - Filco Majestouch 2 TKL - HyperX Cloud II Pro

  3. #1413
    Tech Veterano Avatar de MTPS
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    Cada vez mais atractivos

    O 2700X já estava a 309€, com esta descida deve estabilizar ai nos 285-290.
    AMD SAPPHIRE ASROCK POWER EVERYWHERE. DEATH TO INTEL.

  4. #1414
    Master Business & GPU Man Avatar de Enzo
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    Citação Post Original de MTPS Ver Post
    Cada vez mais atractivos

    O 2700X já estava a 309€, com esta descida deve estabilizar ai nos 285-290.
    Mais um balázio na Intel.

  5. #1415
    Tech Membro Avatar de Nirvana91
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    8400 ftw!!!!!!!!!!!!
    Corsair 350D
    Board:
    Gigabyte B360M DS3H | Cpu: i5 8400 - Corsair H110 | Graf: GTX 1070 | Ram: 16Gb DDR4 2666MHz | Disco: SSD MX300 525Gb + Seagate 7200.12 500GB for Data | Fonte: Corsair RM750x | Monitor: Acer Predator XB271HUA GSync

  6. #1416
    Tech Veterano Avatar de MTPS
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    Um 2700X com uma mobo decente tem um valor brutal. Apetece mesmo voltar para a plataforma e extrair todo o "sumo", porque o bicho a 4.3 GHz com memórias bem puxadinhas é monstruoso.

    O 2600 a 160-170€ rebenta tudo. Não há hipóteses.

    O que faltava na gama AM4 era mesmo um rival para o G4560 e o novo Athlon 200GE veio parti-lo.



    Mesmo com gráfica dedicada o desempenho está equilibrado.

    A usar o igpu é um passeio para a AMD, chegando mesmo a ter o dobro do desempenho



    Espectacular chip por uns meros 50€!

    Só é pena não ter o multi desbloqueado, porque podia estar aqui uma coisinha bem interessante para brincar.
    AMD SAPPHIRE ASROCK POWER EVERYWHERE. DEATH TO INTEL.

  7. #1417
    Tech Bencher Avatar de reiszink
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    Eu por acaso sou da opinião que a AMD está a perder uma excelente oportunidade para fazer dinheiro a sério.

    Segundo os últimos resultados da empresa, as margens já são bastante curtas e numa altura em que podiam capitalizar bastante, basicamente estão a reduzir ainda mais.

    Depois claro, falta sempre dinheiro...
    Intel i7 5820K - ASRock X99M Killer - 16GB G.Skill DDR4 - Gigabyte GTX 980Ti G1 - Plextor M6e 256GB + Samsung 850 EVO 500GB - Corsair H110 - EVGA G3 750W - Acer 27" 144Hz IPS - Zowie EC2-A - Filco Majestouch 2 TKL - HyperX Cloud II Pro

  8. #1418
    Master Business & GPU Man Avatar de Enzo
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  9. #1419
    Tech Ubër-Dominus Avatar de Jorge-Vieira
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    AMD Might Be Cutting Ryzen CPU Prices



    AMD CPU Pricing Date Indicates Minor Price Cuts

    Earlier in the month, Intel launched their new Coffee Lake Refresh processors. After a year of just 6 cores CPUs to pit against 8 core AMD chips, Intel has struck back. With the new lineup, the company now has 8 cores mainstream CPUs as well. In anticipation of the release of the processors, AMD reportedly planned on reducing Ryzen prices. Now that the launch is largely over, we can look back see the effects of the launch.
    The earlier report indicated that AMD was looking to cut prices on their 2nd Generation Ryzen CPUs. The price cuts would be in the area of 5-10%, to be done both by the company and retailers alike. The company likely wanted to keep market share up with the lower prices. The main price cuts would target the higher end 8 core Ryzen 7 2700 and 2700X CPUs. Due to their 8 core nature, they are the ones to face the most competition.
    Minor Price Drops Reflects Weak Intel Competition

    Based on pricing data over the past couple of weeks, we have been able to see a noticeable price drop. As expected, the price cuts have only really hit the high end of the market. Mainly, the 6 core Ryzen 5 2600 and 2600X and 8 core Ryzen 7 2700 and 2700X have all seen their prices drop. All 4 CPUs have seen a price drop by about $15 which is about ~5% or so. More localized price drops have seen bigger savings but only for a short while.
    While it would be nice to have cheaper CPUs, at this point, they aren’t really necessary. While Intel has responded with Coffee Lake Refresh, AMD’s position is still quite strong. The main reason is that the new Intel CPUs aren’t all that price competitive nor always available. Due to the ongoing 14nm shortage, Intel prices are quite elevated in some markets. Until prices drop to a more reasonable level, AMD can stick with their prices and still be a great value option, with almost the same performance.

    Noticia:
    https://www.eteknix.com/amd-might-cu...en-cpu-prices/


    A existir mesmo nova descida nos Ryzen, só os torna cada vez mais apeteciveis e num melhor investimento (neste momento) face aos cpus da Intel que estão com preços verdadeiramente proibitivos.
    http://www.portugal-tech.pt/image.php?type=sigpic&userid=566&dateline=1384876765

  10. #1420
    Tech Veterano Avatar de MTPS
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    Cada vez mais me apetece vender o meu bundle e apostar no 2700X.
    AMD SAPPHIRE ASROCK POWER EVERYWHERE. DEATH TO INTEL.

  11. #1421
    Moderador Avatar de Winjer
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    AMD Investor Relations Announces “Next Horizon” Event for November 6th


    "AMD's next horizon event is scheduled for Tuesday, November 6, 2018, where we will discuss innovation of AMD products and technology, specifically designed with the datacenter on industry leading 7-nanometer process technology."
    Provavelmente, teremos a apresentação do Ryzen 2, Radeon 590, etc.

  12. #1422
    Tech Novato
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    Com a 590, oferta do BF V que tambem permite rui traços! Isso era grande piada

  13. #1423
    Moderador Avatar de Winjer
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    AMD Next Horizon Live Blog: Starts 9am PT / 5pm UTC

    Podem seguir a conferencia da AMD, ás 5 da tarde de hoje.

  14. #1424
    Tech Bencher Avatar de reiszink
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    AMD Desktop processor Market Share rises to 13%

    Já agora, para quem quiser ver em livestream o evento:

    EDIT: Que treta, afinal é livestream do blog, não do evento em si.

    Última edição de reiszink : 06-11-18 às 18:10
    Intel i7 5820K - ASRock X99M Killer - 16GB G.Skill DDR4 - Gigabyte GTX 980Ti G1 - Plextor M6e 256GB + Samsung 850 EVO 500GB - Corsair H110 - EVGA G3 750W - Acer 27" 144Hz IPS - Zowie EC2-A - Filco Majestouch 2 TKL - HyperX Cloud II Pro

  15. #1425
    Tech Ubër-Dominus Avatar de Jorge-Vieira
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    Vamos lá ver que novidades a AMD vai apresentar hoje...
    http://www.portugal-tech.pt/image.php?type=sigpic&userid=566&dateline=1384876765

 

 
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