{"id":22612,"date":"2026-08-31T10:55:06","date_gmt":"2026-08-31T10:55:06","guid":{"rendered":"https:\/\/www.tarluz.com\/?p=22612"},"modified":"2026-08-31T10:55:06","modified_gmt":"2026-08-31T10:55:06","slug":"infiniband-faq","status":"publish","type":"post","link":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/","title":{"rendered":"InfiniBand FAQ"},"content":{"rendered":"<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What is the difference between NDR and XDR InfiniBand?<\/span><\/strong><br \/>\n<span class=\"\">NDR delivers up to 400 Gb\/s per port, while XDR doubles that to 800 Gb\/s per port. XDR also offers higher port density (e.g., greater aggregate throughput) and enhanced SHARP (in\u2011network computing) capabilities.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">How many ports does the NVIDIA QM9700 have?<\/span><\/strong><br \/>\n<span class=\"\">The QM9700 provides 64 400G NDR ports through 32 dual\u2011port OSFP cages. Each physical OSFP cage houses two independent 400G ports.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What is the difference between QM9700 and QM9790?<\/span><\/strong><br \/>\n<span class=\"\">Both provide 64 400G NDR ports. The QM9700 includes built\u2011in management and a Subnet Manager, while the QM9790 is designed for externally managed fabrics.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Does ConnectX\u20117 use OSFP or QSFP112?<\/span><\/strong><br \/>\n<span class=\"\">It can use either, depending on the adapter model and system design. Therefore, always verify the specific ConnectX\u20117 interface before choosing cables or optical transceivers.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">What optics are used for XDR 800G InfiniBand?<\/span><\/strong><br \/>\n<span class=\"\">The Quantum\u2011X800 switch can use 1.6T dual\u2011port OSFP modules that carry two 800G XDR links, while ConnectX\u20118 endpoints typically use 800G single\u2011port OSFP modules.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Can Ethernet optical transceivers be used in InfiniBand switches?<\/span><\/strong><br \/>\n<span class=\"\">Not automatically. Even if speed and form factor match, electrical mapping, firmware encoding, optical specifications, and platform qualification must all be compatible with the InfiniBand switch or host channel adapter (HCA).<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Is InfiniBand always better than Ethernet for GPU clusters?<\/span><\/strong><br \/>\n<span class=\"\">No. InfiniBand is highly optimized for tightly coupled AI training and high\u2011performance computing, but modern RoCE Ethernet can also support large GPU clusters. The choice depends on workload, scale, congestion\u2011control requirements, operational practices, and total cost of ownership.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the difference between NDR and XDR InfiniBand? NDR delivers up to 400 Gb\/s per port, while XDR doubles that to 800 Gb\/s per port. XDR also offers higher port density (e.g., greater aggregate throughput) and enhanced SHARP (in\u2011network computing) capabilities. How many ports does the NVIDIA QM9700 have? The QM9700 provides 64 400G [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1716,1943],"tags":[],"class_list":["post-22612","post","type-post","status-publish","format-standard","hentry","category-faq","category-infiniband"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>InfiniBand FAQ - TARLUZ - FIBER OPTIC SUPPLIERS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"InfiniBand FAQ\" \/>\n<meta property=\"og:description\" content=\"What is the difference between NDR and XDR InfiniBand? NDR delivers up to 400 Gb\/s per port, while XDR doubles that to 800 Gb\/s per port. XDR also offers higher port density (e.g., greater aggregate throughput) and enhanced SHARP (in\u2011network computing) capabilities. How many ports does the NVIDIA QM9700 have? The QM9700 provides 64 400G [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/\" \/>\n<meta property=\"og:site_name\" content=\"TARLUZ - FIBER OPTIC SUPPLIERS\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-31T10:55:06+00:00\" \/>\n<meta name=\"author\" content=\"Blog_TARLUZ\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u043e\u043c\" \/>\n\t<meta name=\"twitter:data1\" content=\"Blog_TARLUZ\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u041f\u0440\u0438\u043c\u0435\u0440\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u043c\u0438\u043d\u0443\u0442\u044b\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/faq\\\/infiniband-faq\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/faq\\\/infiniband-faq\\\/\"},\"author\":{\"name\":\"Blog_TARLUZ\",\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/#\\\/schema\\\/person\\\/a3790181c300d3d675e8bc5311f4d796\"},\"headline\":\"InfiniBand FAQ\",\"datePublished\":\"2026-08-31T10:55:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/faq\\\/infiniband-faq\\\/\"},\"wordCount\":261,\"articleSection\":[\"FAQ\",\"InfiniBand\"],\"inLanguage\":\"ru-RU\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/faq\\\/infiniband-faq\\\/\",\"url\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/faq\\\/infiniband-faq\\\/\",\"name\":\"InfiniBand FAQ - TARLUZ - FIBER OPTIC SUPPLIERS\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/#website\"},\"datePublished\":\"2026-08-31T10:55:06+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/#\\\/schema\\\/person\\\/a3790181c300d3d675e8bc5311f4d796\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/faq\\\/infiniband-faq\\\/#breadcrumb\"},\"inLanguage\":\"ru-RU\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/faq\\\/infiniband-faq\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/faq\\\/infiniband-faq\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"InfiniBand FAQ\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/#website\",\"url\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/\",\"name\":\"TARLUZ - FIBER OPTIC SUPPLIERS\",\"description\":\"DEDICATED IN FIBER OPTIC INDUSTRY\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ru-RU\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/#\\\/schema\\\/person\\\/a3790181c300d3d675e8bc5311f4d796\",\"name\":\"Blog_TARLUZ\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ru-RU\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/cff147c9f1acbecebb473d35cadaf82d0d57ac04d3254cf17240df19544aac83?s=96&d=blank&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/cff147c9f1acbecebb473d35cadaf82d0d57ac04d3254cf17240df19544aac83?s=96&d=blank&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/cff147c9f1acbecebb473d35cadaf82d0d57ac04d3254cf17240df19544aac83?s=96&d=blank&r=g\",\"caption\":\"Blog_TARLUZ\"},\"url\":\"https:\\\/\\\/www.tarluz.com\\\/ru\\\/author\\\/blog_tarluz\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"InfiniBand FAQ - TARLUZ - FIBER OPTIC SUPPLIERS","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/","og_locale":"ru_RU","og_type":"article","og_title":"InfiniBand FAQ","og_description":"What is the difference between NDR and XDR InfiniBand? NDR delivers up to 400 Gb\/s per port, while XDR doubles that to 800 Gb\/s per port. XDR also offers higher port density (e.g., greater aggregate throughput) and enhanced SHARP (in\u2011network computing) capabilities. How many ports does the NVIDIA QM9700 have? The QM9700 provides 64 400G [&hellip;]","og_url":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/","og_site_name":"TARLUZ - FIBER OPTIC SUPPLIERS","article_published_time":"2026-08-31T10:55:06+00:00","author":"Blog_TARLUZ","twitter_card":"summary_large_image","twitter_misc":{"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u043e\u043c":"Blog_TARLUZ","\u041f\u0440\u0438\u043c\u0435\u0440\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f":"2 \u043c\u0438\u043d\u0443\u0442\u044b"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/#article","isPartOf":{"@id":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/"},"author":{"name":"Blog_TARLUZ","@id":"https:\/\/www.tarluz.com\/ru\/#\/schema\/person\/a3790181c300d3d675e8bc5311f4d796"},"headline":"InfiniBand FAQ","datePublished":"2026-08-31T10:55:06+00:00","mainEntityOfPage":{"@id":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/"},"wordCount":261,"articleSection":["FAQ","InfiniBand"],"inLanguage":"ru-RU"},{"@type":"WebPage","@id":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/","url":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/","name":"InfiniBand FAQ - TARLUZ - FIBER OPTIC SUPPLIERS","isPartOf":{"@id":"https:\/\/www.tarluz.com\/ru\/#website"},"datePublished":"2026-08-31T10:55:06+00:00","author":{"@id":"https:\/\/www.tarluz.com\/ru\/#\/schema\/person\/a3790181c300d3d675e8bc5311f4d796"},"breadcrumb":{"@id":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/#breadcrumb"},"inLanguage":"ru-RU","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.tarluz.com\/ru\/faq\/infiniband-faq\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.tarluz.com\/ru\/"},{"@type":"ListItem","position":2,"name":"InfiniBand FAQ"}]},{"@type":"WebSite","@id":"https:\/\/www.tarluz.com\/ru\/#website","url":"https:\/\/www.tarluz.com\/ru\/","name":"TARLUZ - FIBER OPTIC SUPPLIERS","description":"DEDICATED IN FIBER OPTIC INDUSTRY","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.tarluz.com\/ru\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ru-RU"},{"@type":"Person","@id":"https:\/\/www.tarluz.com\/ru\/#\/schema\/person\/a3790181c300d3d675e8bc5311f4d796","name":"Blog_TARLUZ","image":{"@type":"ImageObject","inLanguage":"ru-RU","@id":"https:\/\/secure.gravatar.com\/avatar\/cff147c9f1acbecebb473d35cadaf82d0d57ac04d3254cf17240df19544aac83?s=96&d=blank&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/cff147c9f1acbecebb473d35cadaf82d0d57ac04d3254cf17240df19544aac83?s=96&d=blank&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/cff147c9f1acbecebb473d35cadaf82d0d57ac04d3254cf17240df19544aac83?s=96&d=blank&r=g","caption":"Blog_TARLUZ"},"url":"https:\/\/www.tarluz.com\/ru\/author\/blog_tarluz\/"}]}},"_links":{"self":[{"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/posts\/22612","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/comments?post=22612"}],"version-history":[{"count":1,"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/posts\/22612\/revisions"}],"predecessor-version":[{"id":22613,"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/posts\/22612\/revisions\/22613"}],"wp:attachment":[{"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/media?parent=22612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/categories?post=22612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tarluz.com\/ru\/wp-json\/wp\/v2\/tags?post=22612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}