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{"id":2298602,"date":"2020-06-10T12:32:35","date_gmt":"2020-06-10T10:32:35","guid":{"rendered":"https:\/\/www.phonandroid.com\/?p=2298602"},"modified":"2021-10-25T17:25:10","modified_gmt":"2021-10-25T15:25:10","slug":"amd-ryzen-3000-certaines-cartes-meres-endommagent-processeurs-petit-feu","status":"publish","type":"post","link":"https:\/\/www.phonandroid.com\/amd-ryzen-3000-certaines-cartes-meres-endommagent-processeurs-petit-feu.html","title":{"rendered":"AMD Ryzen : certaines cartes m\u00e8res endommagent les processeurs \u00e0 petit feu"},"content":{"rendered":"

Certains fabricants de cartes m\u00e8res manipulent les valeurs de puissance communiqu\u00e9es aux processeurs AMD Ryzen\u00a0 dans le but de les faire fonctionner \u00e0 des performances sup\u00e9rieures \u00e0 celles autoris\u00e9es. Il s'agit d'un overclocking d\u00e9guis\u00e9 qui acc\u00e9l\u00e8re l'usure des puces, et ce, \u00e0 l'insu des utilisateurs ou encore d'AMD qui est contre ce genre de pratique.<\/strong><\/p>\n

\"AMD<\/p>\n

Un rapport publi\u00e9 sur le forum HWiNFO explique comment certains fabricants de cartes m\u00e8res font d\u00e9lib\u00e9r\u00e9ment fonctionner les processeurs Ryzen d'AMD<\/a> \u00e0 une puissance largement sup\u00e9rieure \u00e0 celles correspondant aux sp\u00e9cifications du fondeur. La pratique en elle-m\u00eame est un overcloking qui ne dit pas son nom. Elle est op\u00e9r\u00e9e de mani\u00e8re ill\u00e9gale, sans le consentement des utilisateurs, encore moins d'AMD.<\/p>\n

Comme l'explique l'auteur du rapport, les processeurs Ryzen<\/strong> sur socket AM4 s'appuient sur des donn\u00e9es de t\u00e9l\u00e9m\u00e9trie externes provenant de la carte m\u00e8re pour d\u00e9terminer la puissance \u00e0 laquelle ils doivent fonctionner. Ces informations sont transmises au coprocesseur par le contr\u00f4leur VRM. Le coprocesseur se charge ensuite de g\u00e9rer l'alimentation et d'ajuster les param\u00e8tres de fonctionnement du CPU.<\/p>\n

\u00ab Dans le cas o\u00f9 la valeur correcte sp\u00e9cifique \u00e0 la conception de la carte m\u00e8re est tr\u00e8s diff\u00e9rente de la valeur d\u00e9clar\u00e9e, il y aura un biais dans la consommation d'\u00e9nergie vue par le CPU<\/em> \u00bb, explique The Stilt, l'auteur du rapport.\u00a0 Le probl\u00e8me ici est que les fabricants de cartes m\u00e8res peuvent, s'ils le souhaitent, manipuler le contr\u00f4leur de sorte qu'il transmette des donn\u00e9es incorrectes. Le but est de faire fonctionner le processeur au-dessus ou en dessous de sa limite de puissance nominale. En l'occurrence, certains fabricants choisissent toujours de d\u00e9passer les limites recommand\u00e9es.<\/p>\n

Lire aussi :\u00a0ASRock lance l\u2019Aqua Z490, une carte m\u00e8re haut de gamme avec \u00e9cran OLED \u00e0 1100 $<\/a><\/strong><\/p>\n

Par exemple, si le fabricant d\u00e9clarait 50% de la valeur correcte, le processeur croirait consommer la moiti\u00e9 de l'\u00e9nergie qu'il re\u00e7oit r\u00e9ellement. \u00ab Ainsi, il s\u2019autorise \u00e0 consommer deux fois plus de puissance que pr\u00e9vu. \u00bb. <\/em>Si cette pratique permet d'augmenter les performances du processeur, elle entra\u00eene une surchauffe intensive et a un impact n\u00e9gatif sur sa dur\u00e9e de vie.<\/p>\n

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