{"id":2029,"date":"2022-04-15T16:09:08","date_gmt":"2022-04-15T16:09:08","guid":{"rendered":"https:\/\/picockpit.com\/raspberry-pi\/?p=2029"},"modified":"2023-07-03T13:42:59","modified_gmt":"2023-07-03T13:42:59","slug":"part-3-what-are-card-grades-and-why-are-they-important","status":"publish","type":"post","link":"https:\/\/picockpit.com\/raspberry-pi\/it\/parte-3-cosa-sono-i-voti-delle-carte-e-perche-sono-importanti\/","title":{"rendered":"Parte 3 - Cosa sono i voti della carta e perch\u00e9 sono importanti?"},"content":{"rendered":"<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Card-Grades-Thumbnail-1024x576.jpg\" alt=\"Parte 3 - Cosa sono i voti delle carte e perch\u00e9 sono importanti\" class=\"wp-image-2049\" srcset=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Card-Grades-Thumbnail-1024x576.jpg 1024w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Card-Grades-Thumbnail-300x169.jpg 300w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Card-Grades-Thumbnail-768x432.jpg 768w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Card-Grades-Thumbnail-1536x864.jpg 1536w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Card-Grades-Thumbnail-18x10.jpg 18w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Card-Grades-Thumbnail.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Parte 3 - Cosa sono i voti delle carte e perch\u00e9 sono importanti<\/figcaption><\/figure><\/div>\n\n\n\n<p>Sapevi che la qualit\u00e0 differisce per ogni scheda SD? Le aziende ottimizzano le schede SD per il prezzo o le prestazioni, il che porta a diversi gradi di schede SD. Discuteremo perch\u00e9 esistono diversi gradi di schede SD, quali gradi possono essere distinti e perch\u00e9 sono importanti.<\/p>\n\n\n\n<p>Questo post \u00e8 la parte finale di una mini serie di tre parti sulle schede SD con alcune informazioni approfondite.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/picockpit.com\/raspberry-pi\/sd-card-classes\/\">Parte 1 - Come classificare le schede SD e scegliere la scheda giusta per un'applicazione<\/a><\/li><li><a href=\"https:\/\/picockpit.com\/raspberry-pi\/part-2-how-does-flash-memory-work\/\">Parte 2 - Come funziona la memoria flash<\/a><\/li><li>Parte 3 - Cosa sono i voti delle carte e perch\u00e9 sono importanti<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Contenuto<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#why-exist\">Perch\u00e9 esistono diversi gradi di schede SD<\/a><\/li><li><a href=\"#what-mean\">Quali gradi si possono distinguere<\/a><\/li><li><a href=\"#why-important\">Perch\u00e9 sono importanti i gradi della scheda SD<\/a><\/li><\/ul>\n\n\n\n<p>Se avete bisogno di una panoramica o di un rapido promemoria sull'argomento, questo grafico informativo dovrebbe servirvi bene.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"724\" height=\"1024\" src=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/6-SD-Card-Grades-724x1024.jpg\" alt=\"6-SD-Card-Grade\" class=\"wp-image-2043\" srcset=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/6-SD-Card-Grades-724x1024.jpg 724w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/6-SD-Card-Grades-212x300.jpg 212w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/6-SD-Card-Grades-768x1086.jpg 768w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/6-SD-Card-Grades-1086x1536.jpg 1086w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/6-SD-Card-Grades-1448x2048.jpg 1448w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/6-SD-Card-Grades-8x12.jpg 8w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/6-SD-Card-Grades-scaled.jpg 1811w\" sizes=\"auto, (max-width: 724px) 100vw, 724px\" \/><figcaption>Scheda 6 - Gradi della scheda SD<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-exist\">Perch\u00e9 esistono diversi gradi di schede SD<\/h2>\n\n\n\n<p>In <a href=\"https:\/\/picockpit.com\/raspberry-pi\/part-2-how-does-flash-memory-work\/\">Parte 2<\/a> abbiamo spiegato come funziona la memoria flash e come viene prodotta. Inoltre, abbiamo menzionato che anche se i produttori prestano meticolosa attenzione a tutti i parametri, non tutti i dies (singoli chip di memoria flash) sono della stessa qualit\u00e0. Alcune matrici possono anche essere difettose.<\/p>\n\n\n\n<p>La maggior parte dei produttori di schede SD non produce la propria memoria flash e altri componenti. Comprano i wafer da un'altra azienda. Poi testano ogni wafer per determinare la qualit\u00e0 di ogni singolo die. Il risultato \u00e8 una mappa del wafer che mostra la qualit\u00e0 di ogni die sul wafer. \u00c8 interessante notare che i die al centro del wafer tendono a funzionare meglio dei die verso il bordo. <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Do-Grades-Exist-1024x433.jpg\" alt=\"Why-Do-Grades-Exist\" class=\"wp-image-2046\" width=\"551\" height=\"233\" srcset=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Do-Grades-Exist-1024x433.jpg 1024w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Do-Grades-Exist-300x127.jpg 300w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Do-Grades-Exist-768x324.jpg 768w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Do-Grades-Exist-1536x649.jpg 1536w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Do-Grades-Exist-2048x865.jpg 2048w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Do-Grades-Exist-18x8.jpg 18w\" sizes=\"auto, (max-width: 551px) 100vw, 551px\" \/><figcaption>Perch\u00e9 esistono i gradi<\/figcaption><\/figure><\/div>\n\n\n\n<p>Al fine di massimizzare il reddito da ogni wafer, la societ\u00e0 di produzione vende il maggior numero possibile di matrici.  Di conseguenza usano le matrici che non raggiungono i loro standard di qualit\u00e0 per i loro prodotti al dettaglio pi\u00f9 economici.<\/p>\n\n\n\n<p>L'applicazione determina la qualit\u00e0 richiesta della scheda SD. Puoi facilmente sostituire la scheda SD della tua videocamera se si guasta. Tuttavia questo non \u00e8 il caso se hai intenzione di installare una scheda SD in un satellite. Una tale scheda dovrebbe avere la massima durata di vita possibile e lavorare in un intervallo di temperatura molto pi\u00f9 alto della tua scheda media.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-mean\">Quali gradi si possono distinguere<\/h2>\n\n\n\n<p>Anche se non ci sono classi ufficiali di schede SD, \u00e8 possibile e probabilmente necessario distinguere tra schede di grado consumer (o al dettaglio) e schede di grado industriale (o OEM). <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/What-Grades-Can-Be-Distinguished-1024x433.jpg\" alt=\"What-Grades-Can-Be-Distinguished\" class=\"wp-image-2045\" width=\"613\" height=\"259\" srcset=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/What-Grades-Can-Be-Distinguished-1024x433.jpg 1024w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/What-Grades-Can-Be-Distinguished-300x127.jpg 300w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/What-Grades-Can-Be-Distinguished-768x324.jpg 768w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/What-Grades-Can-Be-Distinguished-1536x649.jpg 1536w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/What-Grades-Can-Be-Distinguished-2048x865.jpg 2048w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/What-Grades-Can-Be-Distinguished-18x8.jpg 18w\" sizes=\"auto, (max-width: 613px) 100vw, 613px\" \/><figcaption>Quali gradi si possono distinguere<\/figcaption><\/figure><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Carte di qualit\u00e0 per i consumatori<\/h4>\n\n\n\n<p>I produttori ottimizzano le schede SD di livello consumer per il prezzo. Di conseguenza il cliente pu\u00f2 ottenere due schede completamente diverse anche comprando la stessa scheda dallo stesso rivenditore. Poich\u00e9 l'obiettivo principale \u00e8 quello di produrre una scheda al prezzo pi\u00f9 basso possibile, la societ\u00e0 di produzione user\u00e0 qualsiasi pezzo che ha a disposizione. Alcune volte queste schede non raggiungono nemmeno le specifiche che sono stampate sopra.<\/p>\n\n\n\n<p>Inoltre il rischio di ottenere una scheda di scarsa qualit\u00e0 \u00e8 pi\u00f9 alto quando si compra una scheda senza marchio. Quindi, se stai comprando una scheda di qualit\u00e0 consumer, dovresti puntare su una delle marche comunemente conosciute come SanDisk o Kingston per aumentare le tue possibilit\u00e0 di ottenere una buona scheda SD affidabile.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Carte di grado industriale (OEM)<\/h4>\n\n\n\n<p>OEM significa Original Equipment Manufacturer. A differenza delle schede di qualit\u00e0 consumer, le schede OEM hanno una distinta dei materiali (BoM) fissa. Quindi la qualit\u00e0 di due schede \u00e8 pi\u00f9 simile. Il produttore le ottimizza per le prestazioni e l'affidabilit\u00e0. Per questo motivo il prezzo pu\u00f2 essere pi\u00f9 alto (fino a 50 volte per applicazioni speciali).<\/p>\n\n\n\n<p>Il produttore testa che queste Carte di grado industriale raggiungano le loro specifiche di qualit\u00e0.<\/p>\n\n\n\n<p>Essere consapevoli che il grado industriale \u00e8 <strong>nessuno standard ufficiale o globale<\/strong>. Quindi ogni azienda lo interpreta in modo diverso. Per alcune aziende significa migliori prestazioni o affidabilit\u00e0, per altre significa una gamma di temperature pi\u00f9 estesa.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-important\">Perch\u00e9 sono importanti i gradi della scheda SD<\/h2>\n\n\n\n<p>Le schede di qualit\u00e0 consumer sono destinate a guastarsi prima o poi. Anche se potreste cavarvela usando una scheda SD di qualit\u00e0 consumer per la vostra fotocamera o per il Desktop Raspberry Pi, \u00e8 molto frustrante quando la scheda smette di funzionare.  La scheda difettosa pu\u00f2 danneggiare il Pi ed \u00e8 necessario sostituire la scheda. Inoltre significa perdita di dati e diverse ore di lavoro per copiare tutti i tuoi backup (che dovresti sempre fare) su una nuova scheda.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Are-SD-Card-Grades-Important-1024x540.jpg\" alt=\"Why-Are-SD-Card-Grades-Important\" class=\"wp-image-2044\" width=\"703\" height=\"370\" srcset=\"https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Are-SD-Card-Grades-Important-1024x540.jpg 1024w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Are-SD-Card-Grades-Important-300x158.jpg 300w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Are-SD-Card-Grades-Important-768x405.jpg 768w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Are-SD-Card-Grades-Important-1536x811.jpg 1536w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Are-SD-Card-Grades-Important-2048x1081.jpg 2048w, https:\/\/picockpit.com\/raspberry-pi\/wp-content\/uploads\/2022\/04\/Why-Are-SD-Card-Grades-Important-18x10.jpg 18w\" sizes=\"auto, (max-width: 703px) 100vw, 703px\" \/><figcaption>Perch\u00e9 i gradi della scheda SD sono importanti<\/figcaption><\/figure><\/div>\n\n\n\n<p>Le schede di grado industriale sono molto pi\u00f9 affidabili e danno una migliore prestazione. Per questo motivo molte aziende le usano per progetti dove la scheda non \u00e8 facilmente accessibile.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong><span style=\"color:#9b51e0\" class=\"tadv-color\">Nota<\/span><\/strong> Possiamo fornirvi <a href=\"https:\/\/buyzero.de\/products\/sd-karte-mit-ihrem-image-sandisk-class-10-sd-karten\">Carte di grado industriale<\/a> per le vostre esigenze specifiche di progetto. <a href=\"https:\/\/pi3g.com\/kontakt\/\">Contattateci<\/a> se volete saperne di pi\u00f9.<\/p><\/blockquote>\n\n\n\n<p>Inoltre, se state lavorando a qualsiasi progetto su larga scala che coinvolge le schede SD, \u00e8 fondamentale ridurre il rischio che una scheda SD si guasti, per mantenere i costi di manutenzione a un limite ragionevole.<\/p>\n\n\n\n<p>Il Raspberry Pi sta guadagnando popolarit\u00e0 per l'uso in dispositivi embedded. In questo caso, se la scheda SD si rompe, l'intero dispositivo \u00e8 difettoso.<\/p>\n\n\n\n<p>Raspberry Pi ha recentemente rilasciato uno strumento per testare la velocit\u00e0 della scheda SD. Questo \u00e8 utile per controllare se la scheda SD che hai comprato \u00e8 all'altezza. Date un'occhiata al nostro (molto facile) <a href=\"https:\/\/youtu.be\/pCNN2qEJiVU\">video<\/a> per imparare come impostare e utilizzare lo strumento.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" hcb-fetch-image-from=\"https:\/\/youtu.be\/pCNN2qEJiVU\" title=\"COME testare la velocit\u00e0 della scheda SD usando un Raspberry Pi\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/pCNN2qEJiVU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n<div class=\"shariff shariff-align-center shariff-widget-align-left shariff-buttonstretch\"><ul class=\"shariff-buttons theme-white orientation-horizontal buttonsize-medium\"><li class=\"shariff-button twitter shariff-nocustomcolor\" style=\"background-color:#595959\"><a href=\"https:\/\/twitter.com\/share?url=https%3A%2F%2Fpicockpit.com%2Fraspberry-pi%2Fit%2Fparte-3-cosa-sono-i-voti-delle-carte-e-perche-sono-importanti%2F&text=Part%203%20%E2%80%93%20What%20are%20Card%20grades%20and%20why%20are%20they%20important%3F\" title=\"Condividi su X\" aria-label=\"Condividi su X\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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Le aziende ottimizzano le schede SD per il prezzo o le prestazioni, il che porta a diversi gradi di schede SD. Discuteremo perch\u00e9 esistono diversi gradi di schede SD, quali gradi possono essere distinti e perch\u00e9 sono importanti. Questo post \u00e8 la parte finale di un...<\/p>","protected":false},"author":3,"featured_media":2049,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[165],"tags":[169,183,177,179,181,178,171,170,182,167,166,180,168,173,172,175,174],"class_list":["post-2029","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sd-cards","tag-card","tag-consumer","tag-flash","tag-flash-memory","tag-grades","tag-memory","tag-micro","tag-mini","tag-oem","tag-sd","tag-sd-card","tag-sd-card-grades","tag-sda","tag-sdhc","tag-sdsc","tag-sduc","tag-sdxc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Part 3 - What are Card grades and why are they important? | PiCockpit<\/title>\n<meta name=\"description\" content=\"Did you know that the quality differs for each SD card? 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