{"id":841755,"date":"2023-08-04T11:20:00","date_gmt":"2023-08-04T09:20:00","guid":{"rendered":"https:\/\/www.tomshardware.fr\/?p=841755"},"modified":"2023-09-10T12:00:11","modified_gmt":"2023-09-10T10:00:11","slug":"radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd","status":"publish","type":"post","link":"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/","title":{"rendered":"Radeon RX 7800 XT : PowerColor lance cette carte graphique avant la pr\u00e9sentation d&#8217;AMD"},"content":{"rendered":"\n<p>Les <strong>caract\u00e9ristiques de la <a href=\"https:\/\/www.tomshardware.fr\/radeon-rx-7700-xt-et-7800-xt-enfin-du-nouveau-en-milieu-de-gamme-pour-jouer-en-qhd\/\">Radeon RX 7800 XT<\/a> sont enfin connues<\/strong>\u00a0; gr\u00e2ce \u00e0 PowerColor, qui a r\u00e9f\u00e9renc\u00e9 par &#8220;m\u00e9garde&#8221; sa RX 7800 XT Red Devil avant les pr\u00e9sentations officielles d\u2019AMD. Nous savons donc d\u00e9sormais que cette r\u00e9f\u00e9rence embarque <strong>3840 processeurs de flux et 16 Go de VRAM<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"1200\" height=\"667\" src=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/RX-7800-XT-Power-Color.jpg\" alt=\"Carte graphique Radeon RX 7800 XT Red Devil\" class=\"wp-image-841771\" srcset=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/RX-7800-XT-Power-Color.jpg 1200w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/RX-7800-XT-Power-Color-300x167.jpg 300w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/RX-7800-XT-Power-Color-768x427.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"wp-element-caption\">\u00a9 PowerColor<\/figcaption><\/figure><\/div>\n\n\n<p>Cela fait plusieurs semaines que des bruits courent sur <strong>l\u2019arriv\u00e9e de nouvelles cartes graphiques Radeon RX 7000<\/strong>. Principales candidates, <a href=\"https:\/\/www.tomshardware.fr\/on-attendait-juste-les-rx-7700-et-rx-7800-mais-amd-va-degainer-une-troisieme-radeon\/\">des mod\u00e8les des s\u00e9ries 7800 et 7700, mais \u00e9galement une possible Radeon RX 7900<\/a>. Tout r\u00e9cemment, <a href=\"https:\/\/www.tomshardware.fr\/amd-previent-que-de-nouvelles-radeon-rx-7000-arriveront-ce-trimestre-mais-lesquelles\/\">la PDG d\u2019AMD en personne a confirm\u00e9 que de nouvelles cartes RDNA 3 \u00e9taient pr\u00e9vues avant la fin du trimestre<\/a>. Lisa Su n\u2019a pas directement renseign\u00e9 les r\u00e9f\u00e9rences en question, mais ses propos faisaient clairement allusion \u00e0 des mod\u00e8les situ\u00e9s entre les <a href=\"https:\/\/www.tomshardware.fr\/test-amd-radeon-7900-xt-7800-7700-7600-7500-rdna3-caracteristiques-performances-prix\/\">Radeon RX 7900 XT<\/a> et <a href=\"https:\/\/www.tomshardware.fr\/test-amd-radeon-rx7600-carte-graphique-jeux-performances-consommation-gaming-1080\/\">Radeon RX 7600<\/a>. PowerColor a donc vendu la m\u00e8che pour au moins une r\u00e9f\u00e9rence, la RX 7800 XT. La publication a \u00e9t\u00e9 retir\u00e9e du site de la soci\u00e9t\u00e9 depuis, mais les captures d\u2019\u00e9cran ne manquent pas.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00c0 lire &gt; <a href=\"https:\/\/www.tomshardware.fr\/cette-techno-reduit-jusqua-81-la-consommation-des-radeon-rx-7000\/\">Cette techno r\u00e9duit jusqu\u2019\u00e0 81&nbsp;% la consommation des Radeon RX 7000&nbsp;!<\/a><\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-derniere-inconnue-la-consommation\">Derni\u00e8re inconnue : la consommation<\/h2>\n\n\n\n<p>Les 3840 processeurs de flux impliquent 60 unit\u00e9s de calcul&nbsp;; une quantit\u00e9 qui faisait consensus dans les pr\u00e9c\u00e9dentes fuites. La quantit\u00e9 de VRAM de la carte \u00e9tait un myst\u00e8re en revanche. C\u2019est donc <strong>16 Go \u00e0 18 Gbit\/s sur un bus de 256 bits<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"1200\" height=\"692\" src=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/specification-Radeon-RX-7800-XT.jpg\" alt=\"Sp\u00e9cifications Radeon RX 7800 XT\" class=\"wp-image-841770\" srcset=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/specification-Radeon-RX-7800-XT.jpg 1200w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/specification-Radeon-RX-7800-XT-300x173.jpg 300w, https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/specification-Radeon-RX-7800-XT-768x443.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"wp-element-caption\">\u00a9 PowerColor<\/figcaption><\/figure><\/div>\n\n\n<p>Concernant les fr\u00e9quences GPU, la Radeon RX 7800 XT Red Devil monte \u00e0 2255 MHz en mode jeu et 2565 MHz en mode jeu. Les fr\u00e9quences de r\u00e9f\u00e9rence fix\u00e9es par AMD sont de 2210 MHz et 2520 MHz, respectivement.<\/p>\n\n\n\n<p>La bourde de PowerColor n\u2019a qu\u2019une lacune&nbsp;: le TGP n\u2019est pas renseign\u00e9. La marque se contentait en effet de recommander un bloc d\u2019alimentation de 800 W. La carte graphique est aliment\u00e9e par une paire de connecteurs 8 broches. Nous pouvons <strong>estimer une consommation comprise entre 250 W et 300 W<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><div class=\"table-wrapper\"><table><tbody><tr><td><strong>Carte graphique<\/strong><\/td><td><strong>Radeon RX 7900 XT<\/strong><\/td><td><strong>Radeon RX 7900 GRE<\/strong><\/td><td><strong>Radeon RX 7800 XT<\/strong><\/td><td><strong>Radeon RX 6800 XT<\/strong><\/td><\/tr><tr><td><strong>GPU<\/strong><\/td><td>Navi 31 XT<\/td><td>Navi 31 XL<\/td><td><strong>Navi 32<\/strong><\/td><td><strong>Navi 21<\/strong><\/td><\/tr><tr><td><strong>Unit\u00e9s de calcul<\/strong><\/td><td><strong>84<\/strong><\/td><td><strong>80<\/strong><\/td><td><strong>60<\/strong><\/td><td><strong>72<\/strong><\/td><\/tr><tr><td>Multiprocesseurs de flux<\/td><td>5376<\/td><td>5120<\/td><td>3840<\/td><td>4608<\/td><\/tr><tr><td>Fr\u00e9quence jeu<\/td><td>2025 MHz<\/td><td>1880 MHz<\/td><td>2210 MHz<\/td><td>2015 MHz<\/td><\/tr><tr><td>Fr\u00e9quence Boost<\/td><td>2394 MHz<\/td><td>2245 MHz<\/td><td>2520 MHz<\/td><td>2250 MHz<\/td><\/tr><tr><td>VRAM<\/td><td>20 Go GDDR6<\/td><td>16 Go GDDR6<\/td><td>16 Go GDDR6<\/td><td>16 Go GDDR6<\/td><\/tr><tr><td>Vitesse m\u00e9moire<\/td><td>20 Gbit\/s<\/td><td>18 Gbit\/s<\/td><td>18 Gbit\/s<\/td><td>16 Gbit\/s<\/td><\/tr><tr><td>Interface m\u00e9moire<\/td><td>320-bit<\/td><td>256-bit<\/td><td>256-bit<\/td><td>256-bit<\/td><\/tr><tr><td>Bande passante m\u00e9moire<\/td><td>800 Go\/s<\/td><td>576 Go\/s<\/td><td>576 Go\/s<\/td><td>512 Go\/s<\/td><\/tr><tr><td><strong>PCIe Interface<\/strong><\/td><td>Gen4 x16<\/td><td>Gen4 x16<\/td><td>Gen4 x16<\/td><td><strong>Gen4 x16<\/strong><\/td><\/tr><tr><td><strong>TGP<\/strong><\/td><td>&nbsp;315W<\/td><td>&nbsp;260W<\/td><td>250-300 W&nbsp;?<\/td><td><strong>300 W<\/strong><\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n\n\n\n<p>En principe, AMD officialisera cette Radeon fin ao\u00fbt, lors de la Gamescon (qui se d\u00e9roulera du 23 au 27 ao\u00fbt).<\/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=\"zxx\" dir=\"ltr\"><a href=\"https:\/\/t.co\/iK8j0MS9WQ\">https:\/\/t.co\/iK8j0MS9WQ<\/a><\/p>&mdash; All The Watts!! (@All_The_Watts) <a href=\"https:\/\/twitter.com\/All_The_Watts\/status\/1687167660839325697?ref_src=twsrc%5Etfw\">August 3, 2023<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/div>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>AMD souhaitait pr\u00e9senter cette carte \u00e0 la fin du mois, \u00e0 l'occasion de la Gamescon. Finalement, PowerColor a malencontreusement r\u00e9f\u00e9renc\u00e9 sa RX 7800 XT Red Devil, d\u00e9voilant au passage les principales sp\u00e9cifications de cette carte\u2026<\/p>","protected":false},"author":87,"featured_media":841771,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[487,4072],"tags":[578],"hubs":[],"class_list":["post-841755","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite","category-cartes-graphiques","tag-radeon"],"acf":{"display_mode":"medium-img","post_show_excerpt":true,"post_show_in_home":true,"post_show_summary":false,"post_source":"","hide_sidebar":false,"hide_advertising":false},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v23.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Radeon RX 7800 XT : PowerColor lance cette carte graphique avant la pr\u00e9sentation d&#039;AMD<\/title>\n<meta name=\"description\" content=\"AMD souhaitait pr\u00e9senter cette carte \u00e0 la fin du mois, \u00e0 l&#039;occasion de la Gamescon. 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Finalement, PowerColor a malencontreusement r\u00e9f\u00e9renc\u00e9 sa RX 7800 XT Red Devil, d\u00e9voilant au passage les principales sp\u00e9cifications de cette carte graphique RDNA 3.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/\" \/>\n<meta property=\"og:site_name\" content=\"Tom\u2019s Hardware\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/TomsHardwareFrance\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-08-04T09:20:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-10T10:00:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/RX-7800-XT-Power-Color.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"667\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"R\u00e9mi Bouvet\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@tomshardware_fr\" \/>\n<meta name=\"twitter:site\" content=\"@tomshardware_fr\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/\"},\"author\":{\"name\":\"R\u00e9mi Bouvet\",\"@id\":\"https:\/\/www.tomshardware.fr\/#\/schema\/person\/5ccbd8cbd7e2cc86da6a517f62b4d005\"},\"headline\":\"Radeon RX 7800 XT : PowerColor lance cette carte graphique avant la pr\u00e9sentation d&#8217;AMD\",\"datePublished\":\"2023-08-04T09:20:00+00:00\",\"dateModified\":\"2023-09-10T10:00:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/\"},\"wordCount\":477,\"commentCount\":1,\"publisher\":{\"@id\":\"https:\/\/www.tomshardware.fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/RX-7800-XT-Power-Color.jpg\",\"keywords\":[\"Radeon\"],\"articleSection\":[\"Actualit\u00e9\",\"Cartes graphiques\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/\",\"url\":\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/\",\"name\":\"Radeon RX 7800 XT : PowerColor lance cette carte graphique avant la pr\u00e9sentation d'AMD\",\"isPartOf\":{\"@id\":\"https:\/\/www.tomshardware.fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.tomshardware.fr\/radeon-rx-7800-xt-le-gpu-lance-par-powercolor-avant-sa-presentation-officielle-amd\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2023\/08\/RX-7800-XT-Power-Color.jpg\",\"datePublished\":\"2023-08-04T09:20:00+00:00\",\"dateModified\":\"2023-09-10T10:00:11+00:00\",\"description\":\"AMD souhaitait pr\u00e9senter cette carte \u00e0 la fin du mois, \u00e0 l'occasion de la Gamescon. 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