{"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\/da\/blog\/news\/predstavlena-plata-raspberry-pi-4","title":{"rendered":"Raspberry Pi 4 er blevet pr\u00e6senteret","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Tre og et halvt \u00e5r efter skabelsen<\/a><\/noindex> Raspberry Pi 3 organisationen Raspberry Pi Foundation pr\u00e6senterede<\/a><\/noindex> den nye generation af kort Raspberry Pi 4<\/a><\/noindex>. Modellen «B» er nu tilg\u00e6ngelig for bestilling. udstyret med<\/a><\/noindex> den nye SoC BCM2711, som er en helt omarbejdet version af den tidligere anvendte chip BCM283X, der fremstilles med en 28nm proces. Prisen for kortet forbliver u\u00e6ndret og er som f\u00f8r 35 USD. <\/p>\n

SoC'en inkluderer stadig fire 64-bit ARMv8 kerner og k\u00f8rer kun ved en let forh\u00f8jet frekvens (1,5 GHz i stedet for 1,4 GHz). Denne \u00e6ndring i fremstillingsprocessen har gjort det muligt at erstatte Cortex-A53 med den mere kraftfulde Cortex-A72 kerne, hvilket har l\u00f8ftet ydeevnen til et nyt niveau. Derudover er der sket et skift til LPDDR4 hukommelse, som i forhold til den tidligere anvendte LPDDR2 hukommelse giver en tredobling af b\u00e5ndbredden. Som resultat viser nye benchmark-tests, at det nye kort overg\u00e5r den tidligere model Raspberry Pi 3B+ med 2-4 gange.<\/p>\n

Af andre v\u00e6sentlige forskelle kan n\u00e6vnes inkluderingen af en PCI Express controller, to USB 3.0 porte (plus to USB 2.0 porte) og to Micro HDMI porte (tidligere en standard HDMI port), som muligg\u00f8r tilslutning til to sk\u00e6rme med 4K kvalitet. Den betydeligt opdaterede grafiske accelerator VideoCore VI underst\u00f8tter OpenGL ES 3.0 og er i stand til at dekode H.265 video med 4Kp60 kvalitet (eller 4Kp30 p\u00e5 to sk\u00e6rme). Str\u00f8m kan leveres via USB-C porten (tidligere anvendt USB micro-B), gennem GPIO eller gennem en ekstra modul<\/a><\/noindex> PoE HAT (Power over Ethernet).<\/p>\n

Desuden er det gamle problem med utilstr\u00e6kkelig hukommelse l\u00f8st - kortet f\u00e5s nu i varianter med 1, 2 og 4 GB RAM (priserne henholdsvis $35, $45 og $55), hvilket g\u00f8r det nye kort til en passende l\u00f8sning til opbygning af arbejdstationer, spilkonsoller, servere, gateways til smart home, robotkontrolenheder og moderne multimediesystemer. <\/p>\n

Den forbedrede gigabit Ethernet-controller er nu forbundet til SoC via en separat RGMII-bus, hvilket muligg\u00f8r den fulde lovede ydeevne. USB er nu implementeret via en separat VLI-controller, tilsluttet via PCI Express og giver en samlet b\u00e5ndbredde p\u00e5 4Gbps. Som f\u00f8r er kortet udstyret med 40 GPIO-porte, DSI (tilslutning af touchscreen), CSI (tilslutning af kamera) og en tr\u00e5dl\u00f8s chip, der underst\u00f8tter 802.11ac-standarden, k\u00f8rer p\u00e5 frekvenserne 2.4GHz og 5GHz og Bluetooth 5.0.<\/p>\n

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

Samtidig blev en ny version af distributionen offentliggjort Raspbian<\/a><\/noindex>, som tilbyder fuld underst\u00f8ttelse af Raspberry Pi 4. Udgivelsen er ogs\u00e5 bem\u00e6rkelsesv\u00e6rdig ved overgangen til Debian 10 «Buster» (tidligere blev Debian 9 anvendt), en betydelig redesign af brugergr\u00e6nsefladen og implementeringen af den nye Mesa V3D-driver, som har v\u00e6sentligt forbedret 3D-underst\u00f8ttelse (inklusive tilg\u00e6ngeligheden af OpenGL til browseracceleration). To versioner er forberedt til download - en forkortet (406 MB<\/a><\/noindex>) for serversystemer og en fuld (1.1 GB<\/a><\/noindex>), leveret med et brugergr\u00e6nseflade PIXEL<\/a><\/noindex> (afledt af LXDE). For installation fra depositories<\/a><\/noindex> er omkring 35.000 pakker tilg\u00e6ngelige. <\/p>\n

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

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

Kilde: 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\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\udd47 Raspberry Pi 4-kortet pr\u00e6senteret | ProHoster","description":"Tre et halvt \u00e5r efter lanceringen af Raspberry Pi 3 oprettede Raspberry Pi Foundation","canonical_url":"https:\/\/prohoster.info\/da\/blog\/news\/predstavlena-plata-raspberry-pi-4","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"da_DK","og:site_name":"ProHoster | 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