{"id":35627,"date":"2019-10-31T22:05:26","date_gmt":"2019-10-31T19:05:26","guid":{"rendered":"https:\/\/prohoster.info\/blog\/predstavlena-plata-raspberry-pi-4\/"},"modified":"2019-10-31T22:05:26","modified_gmt":"2019-10-31T19:05:26","slug":"predstavlena-plata-raspberry-pi-4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/predstavlena-plata-raspberry-pi-4","title":{"rendered":"La carte Raspberry Pi 4 est pr\u00e9sent\u00e9e.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Apr\u00e8s trois ans et demi depuis de la cr\u00e9ation<\/a><\/noindex> Raspberry Pi 3 l'organisation Raspberry Pi Foundation pr\u00e9sent\u00e9e<\/a><\/noindex> nouvelle g\u00e9n\u00e9ration de cartes Raspberry Pi 4<\/a><\/noindex>. Le mod\u00e8le \u00ab B \u00bb est maintenant disponible \u00e0 la commande. \u00e9quip\u00e9 de<\/a><\/noindex> un nouveau SoC BCM2711, qui est une version enti\u00e8rement remani\u00e9e de la puce BCM283X pr\u00e9c\u00e9dente, fabriqu\u00e9e selon un processus de 28 nm. Le prix de la carte est rest\u00e9 inchang\u00e9 et s'\u00e9l\u00e8ve toujours \u00e0 35 dollars am\u00e9ricains. <\/p>\n

Le SoC inclut toujours quatre c\u0153urs ARMv8 64 bits et fonctionne \u00e0 une fr\u00e9quence l\u00e9g\u00e8rement augment\u00e9e (1.5GHz au lieu de 1.4GHz). Ce changement de processus technologique a permis de remplacer le Cortex-A53 par un c\u0153ur Cortex-A72 plus performant, ce qui a \u00e9lev\u00e9 les performances \u00e0 un nouveau niveau. De plus, le passage \u00e0 la m\u00e9moire LPDDR4, qui offre une bande passante tripl\u00e9e par rapport \u00e0 la m\u00e9moire LPDDR2 utilis\u00e9e pr\u00e9c\u00e9demment, a \u00e9t\u00e9 effectu\u00e9. En cons\u00e9quence, lors des tests de performance, la nouvelle carte surpasse l'ancien mod\u00e8le Raspberry Pi 3B+ de 2 \u00e0 4 fois.<\/p>\n

Parmi les autres diff\u00e9rences notables, on peut citer l'inclusion d'un contr\u00f4leur PCI Express, de deux ports USB 3.0 (plus deux ports USB 2.0) et de deux ports Micro HDMI (un port HDMI standard \u00e9tait pr\u00e9c\u00e9demment utilis\u00e9), permettant de se connecter \u00e0 deux moniteurs en qualit\u00e9 4K. Le processeur graphique VideoCore VI a \u00e9t\u00e9 consid\u00e9rablement mis \u00e0 jour, prenant en charge OpenGL ES 3.0 et capable de d\u00e9coder des vid\u00e9os H.265 en qualit\u00e9 4Kp60 (ou 4Kp30 sur deux moniteurs). L'alimentation peut \u00eatre fournie via un port USB-C (auparavant USB micro-B), par GPIO ou par un mod\u00e8le<\/a><\/noindex> PoE HAT (Power over Ethernet).<\/p>\n

De plus, le probl\u00e8me de la m\u00e9moire vive insuffisante a \u00e9t\u00e9 r\u00e9solu : la carte est d\u00e9sormais propos\u00e9e en versions avec 1, 2 et 4 Go de RAM (prix respectifs de 35 $, 45 $ et 55 $), ce qui rend la nouvelle carte adapt\u00e9e \u00e0 la cr\u00e9ation de stations de travail, de plateformes de jeu, de serveurs, de passerelles pour maisons intelligentes, de contr\u00f4leurs de robots et de syst\u00e8mes multim\u00e9dias modernes. <\/p>\n

Contr\u00f4leur Ethernet gigabit am\u00e9lior\u00e9, d\u00e9sormais connect\u00e9 au SoC par un bus RGMII d\u00e9di\u00e9, permettant d'atteindre la performance annonc\u00e9e. L'USB est maintenant impl\u00e9ment\u00e9 via un contr\u00f4leur VLI s\u00e9par\u00e9, connect\u00e9 par PCI Express et offrant une bande passante totale de 4 Gbps. Comme auparavant, la carte est \u00e9quip\u00e9e de 40 ports GPIO, DSI (connexion d'\u00e9cran tactile), CSI (connexion de cam\u00e9ra) et d'une puce de communication sans fil prenant en charge la norme 802.11ac, fonctionnant aux fr\u00e9quences de 2,4 GHz et 5 GHz et Bluetooth 5.0.<\/p>\n

\"La<\/a><\/noindex><\/center><\/p>\n

Un nouveau type de distribution a \u00e9t\u00e9 publi\u00e9 en m\u00eame temps Raspbian<\/a><\/noindex>, qui offre un support complet pour Raspberry Pi 4. La sortie se distingue \u00e9galement par le passage \u00e0 la base Debian 10 \u00ab Buster \u00bb (auparavant, Debian 9 \u00e9tait utilis\u00e9), une refonte significative de l'interface utilisateur et l'utilisation d'un nouveau pilote Mesa V3D avec un support 3D consid\u00e9rablement am\u00e9lior\u00e9 (y compris l'utilisation d'OpenGL pour l'acc\u00e9l\u00e9ration du navigateur). Deux distributions ont \u00e9t\u00e9 pr\u00e9par\u00e9es pour t\u00e9l\u00e9chargement \u2014 abr\u00e9g\u00e9e (406 Mo<\/a><\/noindex>) pour les syst\u00e8mes de serveurs et une version compl\u00e8te (1,1 Go<\/a><\/noindex>), fournie avec un environnement utilisateur PIXEL<\/a><\/noindex> (un d\u00e9riv\u00e9 de LXDE). Pour l'installation \u00e0 partir des d\u00e9p\u00f4ts<\/a><\/noindex> , environ 35 000 paquets sont disponibles. <\/p>\n

\"La<\/a><\/noindex><\/center><\/p>\n

<\/a><\/noindex><\/p>\n

Source : opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-35627","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47La carte Raspberry Pi 4 pr\u00e9sent\u00e9e | ProHoster","description":"Trois ans et demi apr\u00e8s la cr\u00e9ation de Raspberry Pi 3, l'organisation Raspberry Pi Foundation","canonical_url":"https:\/\/prohoster.info\/fr\/blog\/news\/predstavlena-plata-raspberry-pi-4","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"fr_FR","og:site_name":"ProHoster | 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