{"id":711778,"date":"2022-05-05T13:50:00","date_gmt":"2022-05-05T11:50:00","guid":{"rendered":"https:\/\/www.tomshardware.fr\/?p=711778"},"modified":"2023-07-08T23:30:02","modified_gmt":"2023-07-08T21:30:02","slug":"lamd-radeon-rx-7900-xt-serait-la-premiere-carte-graphique-grand-public-pcie-5-0","status":"publish","type":"post","link":"https:\/\/www.tomshardware.fr\/lamd-radeon-rx-7900-xt-serait-la-premiere-carte-graphique-grand-public-pcie-5-0\/","title":{"rendered":"L&#8217;AMD Radeon RX 7900 XT serait la premi\u00e8re carte graphique grand public PCIe 5.0"},"content":{"rendered":"\n<p>Des correctifs de pilotes Linux publi\u00e9s par AMD et d\u00e9cortiqu\u00e9s par un certain @Kepler_L2 apportent quelques indications sur les futurs GPU RDNA 3. La premi\u00e8re est que les moteurs vid\u00e9os VCN 4.x (<em>Video Codec Next<\/em> version 4.x) sont capables de g\u00e9rer la plupart des codecs modernes. La seconde est que le GPU Navi 31 exploiterait l\u2019interface PCIe 5.0.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1.jpg\"><img alt=\"Image 1 : L&#039;AMD Radeon RX 7900 XT serait la premi\u00e8re carte graphique grand public PCIe 5.0\" decoding=\"async\" width=\"529\" height=\"448\" src=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1.jpg\" alt=\"\" class=\"wp-image-711779\" srcset=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1.jpg 529w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1-300x254.jpg 300w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1-150x127.jpg 150w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1-200x169.jpg 200w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1-250x212.jpg 250w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1-350x296.jpg 350w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1-400x339.jpg 400w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1-450x381.jpg 450w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/av1-500x423.jpg 500w\" sizes=\"(max-width: 529px) 100vw, 529px\" \/><\/a><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0.jpg\"><img alt=\"Image 2 : L&#039;AMD Radeon RX 7900 XT serait la premi\u00e8re carte graphique grand public PCIe 5.0\" decoding=\"async\" width=\"549\" height=\"510\" src=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0.jpg\" alt=\"\" class=\"wp-image-711780\" srcset=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0.jpg 549w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0-300x279.jpg 300w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0-150x139.jpg 150w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0-200x186.jpg 200w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0-250x232.jpg 250w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0-350x325.jpg 350w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0-400x372.jpg 400w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0-450x418.jpg 450w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2022\/05\/pcie5-0-500x464.jpg 500w\" sizes=\"(max-width: 549px) 100vw, 549px\" \/><\/a><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<p>Les donn\u00e9es concernant l\u2019encodage \/ d\u00e9codage datent d\u2019il y a quelques jours. Nous n\u2019en avons pas parl\u00e9 sur le site, mais des rumeurs sur l\u2019absence de support AV1 ont circul\u00e9. Finalement, il n\u2019en serait rien&nbsp;: les moteurs VCN 4.0 d&#8217;AMD devraient bien prendre en charge le d\u00e9codage H.264\/MPEG 4 AVC, H.265, VP9, AV1 et JPEG, ainsi que l\u2019encodage AV1, H.264 et H.265. Il y a en revanche des incertitudes pour le codec H.266\/VVC.<\/p>\n\n\n\n<p class=\"has-white-background-color has-background\"><strong><a href=\"https:\/\/www.tomshardware.fr\/le-gpu-navi-31-aurait-moins-de-processeurs-de-flux-que-prevu\/\">Le GPU Navi 31 aurait moins de processeurs de flux que pr\u00e9vu<\/a><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-vcn-4-x\">VCN 4.x<\/h2>\n\n\n\n<p>Rappelons qu\u2019actuellement, seuls les <a href=\"https:\/\/www.tomshardware.fr\/intel-detaille-sa-gamme-de-cartes-graphiques-mobiles-arc-alchemist\/\">GPU Intel Arc Alchemist<\/a> proposent un support complet de AV1. Intel en a d\u2019ailleurs fait un argument marketing lors de sa pr\u00e9sentation fin mars. \u00c0 l\u2019inverse, chez AMD, les <a href=\"https:\/\/www.tomshardware.fr\/radeon-rx-6500-xt-une-carte-graphique-a-eviter\/\">Radeon RX 6500 XT<\/a> et <a href=\"https:\/\/www.tomshardware.fr\/radeon-rx-6400-aussi-mauvaise-que-la-rx-6500-xt\/\">Radeon RX 6400<\/a> se sont distingu\u00e9es \u2013 de mani\u00e8re n\u00e9gative \u2013 par l\u2019absence de d\u00e9codage AV1.<\/p>\n\n\n\n<p>Notez que les GPU AMD RDNA 2 utilisent les moteurs VCN 3.0, VCN 3.1 et VCN 3.1.2. Ces moteurs VCN 3.x g\u00e8rent le d\u00e9codage H.264\/MPEG4 AVC, H.265, VP9, AV1 et JPEG ainsi que l&#8217;encodage H.264 et H.265.<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p><strong>A lire aussi, les derni\u00e8res actualit\u00e9s concernant les cartes graphiques Radeon d&#8217;AMD :<\/strong><\/p>\n\n\n\n    <ul>\n                    <li><a href=\"https:\/\/www.tomshardware.fr\/radeon-rx-8000-quatre-cartes-mais-peu-devolution-amd-en-manque-dinspiration\/\">Radeon RX 8000 : quatre cartes mais peu d&#8217;\u00e9volution, AMD en manque d&#8217;inspiration\u00a0?<\/a><\/li>\n                    <li><a href=\"https:\/\/www.tomshardware.fr\/une-rx-8000-en-fuite-seme-le-doute-sur-les-performances-de-rdna-4\/\">Une RX 8000 en fuite s\u00e8me le doute sur les performances de RDNA 4<\/a><\/li>\n                    <li><a href=\"https:\/\/www.tomshardware.fr\/des-rx-8800-xt-en-fin-dannee-et-moitie-moins-cheres-quune-rtx-4080-super\/\">Des RX 8800 XT en fin d&#8217;ann\u00e9e et moiti\u00e9 moins ch\u00e8res qu&#8217;une RTX 4080 SUPER\u00a0?<\/a><\/li>\n                    <li><a href=\"https:\/\/www.tomshardware.fr\/prioritaires-les-rx-8000-enterrent-le-projet-de-radeon-rx-7000-dentree-de-gamme\/\">Prioritaires, les RX 8000 enterrent le projet de Radeon RX 7000 d&#8217;entr\u00e9e de gamme<\/a><\/li>\n            <\/ul>\n\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-pcie-5-0\">PCIe 5.0<\/h2>\n\n\n\n<p>\u00c0 propos de l\u2019interface PCIe, le GPU Navi 31 utiliserait du PCIe 5.0 x16. Certains \u00e9voquent aussi du PCIe 5.0 x16 pour Navi 32 et du PCIe 5.0 x8 pour Navi 33.<\/p>\n\n\n\n<p>La feuille de route r\u00e9cemment publi\u00e9e par AMD pour ses <a href=\"https:\/\/www.tomshardware.fr\/la-feuille-de-route-damd-pour-les-processeurs-zen-4-grand-public\/\">processeurs Zen 4 a confirm\u00e9 qu&#8217;ils profiteraient d\u2019un support de l\u2019interface PCIe 5.0<\/a>. \u00c0 ce stade, il n\u2019est toutefois pas garanti que les Radeon RX 7000 exploitent cette interface. De fait, <a href=\"https:\/\/www.tomshardware.fr\/nvidia-pas-de-pcie-5-pour-les-futures-geforce-rtx-4000-series-ada-lovelace\/\">les futures GeForce RTX 4000 Series &#8220;Ada Lovelace&#8221;  feraient l\u2019impasse sur le PCIe 5.0<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"responsive-container\"><blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Confirmed just a Jebait, RDNA3 does support AV1 encoding. <a href=\"https:\/\/t.co\/L1RD6T8cVK\">https:\/\/t.co\/L1RD6T8cVK<\/a> <a href=\"https:\/\/t.co\/ii8bYHz1wY\">pic.twitter.com\/ii8bYHz1wY<\/a><\/p>&mdash; Kepler (@Kepler_L2) <a href=\"https:\/\/twitter.com\/Kepler_L2\/status\/1521846045319352323?ref_src=twsrc%5Etfw\">May 4, 2022<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/div>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"responsive-container\"><blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"cs\" dir=\"ltr\">PCIe Gen5 16x for Navi31 <a href=\"https:\/\/t.co\/f53270NXpE\">pic.twitter.com\/f53270NXpE<\/a><\/p>&mdash; Kepler (@Kepler_L2) <a href=\"https:\/\/twitter.com\/Kepler_L2\/status\/1521838135310696454?ref_src=twsrc%5Etfw\">May 4, 2022<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/div>\n<\/div><\/figure>\n\n\n\n<p>Sources : <a href=\"https:\/\/videocardz.com\/newz\/amd-radeon-rx-7900-xt-with-navi-31-gpu-rumored-to-be-the-first-consumer-pcie-gen5-graphics-card\" target=\"_blank\" rel=\"noreferrer noopener\">VideoCardz<\/a>, <a href=\"https:\/\/www.tomshardware.com\/news\/next-amd-video-engine-may-lack-av1\" target=\"_blank\" rel=\"noreferrer noopener\">Tom&#8217;s Hardware US<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une interface PCIe 5.0 x16 pour le GPU Navi 31.<\/p>","protected":false},"author":87,"featured_media":711421,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[487,4072],"tags":[551,578],"hubs":[],"class_list":["post-711778","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite","category-cartes-graphiques","tag-amd","tag-radeon"],"acf":{"display_mode":"medium-img","post_show_excerpt":true,"post_show_in_home":true,"post_source":"","hide_sidebar":false,"hide_advertising":false,"post_show_summary":false},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v23.1) - 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