{"id":17016,"date":"2025-04-18T07:52:02","date_gmt":"2025-04-18T07:52:02","guid":{"rendered":"https:\/\/www.fibermall.com\/blog\/?p=17016"},"modified":"2025-04-18T07:52:43","modified_gmt":"2025-04-18T07:52:43","slug":"the-nvidia-gb300-nvlink-liquid-cooled-switch","status":"publish","type":"post","link":"https:\/\/www.fibermall.com\/blog\/nvidia-gb300-nvlink-liquid-cooled-switch.htm","title":{"rendered":"The NVIDIA GB300 NVLink Liquid-Cooled Switch"},"content":{"rendered":"\n<p>At this year\u2019s GTC conference, NVIDIA introduced its latest GB300 AI chip and AI server. However, detailed information on the GB300 liquid-cooled switch has been scarce. The following images of the GB300 NVLink liquid-cooled switch were provided by the overseas partner STH.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Liquid-Cooled-Switch-Tray.png\" alt=\"NVIDIA GB300 NVLink Liquid-Cooled Switch Tray\" class=\"wp-image-17019\" style=\"width:800px\" width=\"800\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Liquid-Cooled-Switch-Tray.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Liquid-Cooled-Switch-Tray-300x200.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Liquid-Cooled-Switch-Tray-768x513.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">NVIDIA GB300 NVLink Liquid-Cooled Switch Tray<\/figcaption><\/figure>\n\n\n\n<p>Displayed at NVIDIA GTC 2025, the GB300 NVLink switch tray is positioned between the GB300 compute blades. Unlike many contemporary switch designs, this unit employs a liquid-cooling system, rendering it compatible with the NVL72 rack.<\/p>\n\n\n\n<p>The switch tray features a prominent handle at the front, followed by liquid cooling nozzles at the rear, a bus power supply, and connectors for four NVLink cable assemblies.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-1.png\" alt=\"NVIDIA GB300 NVLink Switch Tray 1\" class=\"wp-image-17020\" style=\"width:800px\" width=\"800\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-1.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-1-300x182.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-1-768x465.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">NVIDIA GB300 NVLink Switch Tray 1<\/figcaption><\/figure>\n\n\n\n<p>An especially ingenious aspect of the design lies in the fact that, although the NVLink switch chip is liquid-cooled, it is not the only component utilizing liquid cooling.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-2.png\" alt=\"NVIDIA GB300 NVLink Switch Tray\u00a02\" class=\"wp-image-17021\" style=\"width:800px\" width=\"800\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-2.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-2-300x200.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-2-768x513.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">NVIDIA GB300 NVLink Switch Tray\u00a02<\/figcaption><\/figure>\n\n\n\n<p>This image shows the cooling plate for the NVLink Switch section. In practice, the actual NVLink Switch PCB is considerably shorter in length compared to the depth of the chassis.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-4.png\" alt=\"NVIDIA GB300 NVLink Switch Tray 4\" class=\"wp-image-17022\" style=\"width:800px\" width=\"800\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-4.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-4-300x200.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-4-768x513.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">NVIDIA GB300 NVLink Switch Tray 4<\/figcaption><\/figure>\n\n\n\n<p>The power distribution can be clearly observed in this view.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-5.png\" alt=\"NVIDIA GB300 NVLink Switch Tray 5\" class=\"wp-image-17023\" style=\"width:800px\" width=\"800\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-5.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-5-300x200.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-5-768x513.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">NVIDIA GB300 NVLink Switch Tray 5<\/figcaption><\/figure>\n\n\n\n<p>While mainstream liquid-cooled servers typically employ rubber hoses, this design predominantly uses metal pipes. Although this may appear to be a minor detail, it serves as a distinctive design feature.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-3.png\" alt=\"NVIDIA GB300 NVLink Switch Tray 3\" class=\"wp-image-17024\" style=\"width:800px\" width=\"800\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-3.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-3-300x200.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-3-768x513.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">NVIDIA GB300 NVLink Switch Tray 3<\/figcaption><\/figure>\n\n\n\n<p>At the bottom of the assembly, several control components are visible, including an M.2 SSD.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-6.png\" alt=\"NVIDIA GB300 NVLink Switch Tray\u00a06\" class=\"wp-image-17025\" style=\"width:800px\" width=\"800\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-6.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-6-300x128.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIA-GB300-NVLink-Switch-Tray-6-768x326.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Although NVIDIA customarily masks many of the logos on its GTC 2025 display models, two chips\u2014the Marvell 88E1514 and the Lattice LCMXO3D-9400HC\u2014remain identifiable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><strong>Conclusion<\/strong><strong><\/strong><\/h2>\n\n\n\n<p>This brief overview introduces the NVLink Switch trays, which will be integrated into the forthcoming GB300 NVL72 racks. More of these racks are expected to appear later this year, even though the majority of the market is currently still producing and utilizing the GB200 NVL72 racks. Nonetheless, NVIDIA\u2019s commitment to liquid cooling is a hallmark of this generation, and as we move into the Rubin era, this commitment is poised to accelerate further.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIAs-commitment-to-liquid-cooling-is-a-hallmark-of-this-generation.png\" alt=\"NVIDIA\u2019s commitment to liquid cooling is a hallmark of this generation\" class=\"wp-image-17026\" style=\"width:800px\" width=\"800\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIAs-commitment-to-liquid-cooling-is-a-hallmark-of-this-generation.png 1000w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIAs-commitment-to-liquid-cooling-is-a-hallmark-of-this-generation-300x169.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2025\/04\/NVIDIAs-commitment-to-liquid-cooling-is-a-hallmark-of-this-generation-768x432.png 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<style>\r\n\r\n        .lwrp.link-whisper-related-posts{\r\n            \r\n            margin-top: 40px;\nmargin-bottom: 30px;\r\n        }\r\n        .lwrp .lwrp-title{\r\n            \r\n            \r\n        }\r\n        .lwrp .lwrp-description{\r\n            \r\n            \r\n\r\n        }\r\n        .lwrp .lwrp-list-container{\r\n        }\r\n        .lwrp .lwrp-list-multi-container{\r\n            display: flex;\r\n        }\r\n        .lwrp .lwrp-list-double{\r\n            width: 48%;\r\n        }\r\n        .lwrp .lwrp-list-triple{\r\n            width: 32%;\r\n        }\r\n        .lwrp .lwrp-list-row-container{\r\n            display: flex;\r\n            justify-content: space-between;\r\n        }\r\n        .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n            width: calc(100% - 20px);\r\n        }\r\n        .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n            \r\n            list-style: decimal;\r\n        }\r\n        .lwrp .lwrp-list-item img{\r\n            max-width: 100%;\r\n            height: auto;\r\n        }\r\n        .lwrp .lwrp-list-item.lwrp-empty-list-item{\r\n            background: initial !important;\r\n        }\r\n        .lwrp .lwrp-list-item .lwrp-list-link .lwrp-list-link-title-text,\r\n        .lwrp .lwrp-list-item .lwrp-list-no-posts-message{\r\n            \r\n                \r\n        }\r\n        @media screen and (max-width: 480px) {\r\n            .lwrp.link-whisper-related-posts{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-title{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-description{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-list-multi-container{\r\n                flex-direction: column;\r\n            }\r\n            .lwrp .lwrp-list-multi-container ul.lwrp-list{\r\n                margin-top: 0px;\r\n                margin-bottom: 0px;\r\n                padding-top: 0px;\r\n                padding-bottom: 0px;\r\n            }\r\n            .lwrp .lwrp-list-double,\r\n            .lwrp .lwrp-list-triple{\r\n                width: 100%;\r\n            }\r\n            .lwrp .lwrp-list-row-container{\r\n                justify-content: initial;\r\n                flex-direction: column;\r\n            }\r\n            .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n                width: 100%;\r\n            }\r\n            .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-list-item .lwrp-list-link .lwrp-list-link-title-text,\r\n            .lwrp .lwrp-list-item .lwrp-list-no-posts-message{\r\n                \r\n                    \r\n            }\r\n        }<\/style>\r\n<div id=\"link-whisper-related-posts-widget\" class=\"link-whisper-related-posts lwrp\">\r\n            <h3 class=\"lwrp-title\">Related Posts<\/h3>    \r\n        <div class=\"lwrp-list-container\">\r\n                                            <ul class=\"lwrp-list lwrp-list-single\">\r\n                    <li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/xgspon.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Understanding xgspon: Key Aspects of the Modern Optical Transceiver Technology<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/dac-cable-unifi.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Direct Attach Cable Ubiquiti: Unleashing Network Performance with DAC Patch Cable<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/mtp-fiber-connector.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Unlocking the Potential of MTP Fiber Connectors in Modern Data Centers<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/optical-module-quality-test-fiber-mall.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">Optical Module Quality Test of Fiber Mall<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/4-types-of-50g-sfp56-transceivers.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">4 Types of 50G SFP56 Transceivers Introduction<\/span><\/a><\/li>                <\/ul>\r\n                        <\/div>\r\n<\/div>","protected":false},"excerpt":{"rendered":"<p>At this year\u2019s GTC conference, NVIDIA introduced its latest GB300 AI chip and AI server. However, detailed information on the GB300 liquid-cooled switch has been scarce. The following images of the GB300 NVLink liquid-cooled switch were provided by the overseas partner STH. Displayed at NVIDIA GTC 2025, the GB300 NVLink switch tray is positioned between [&hellip;]<\/p>\n","protected":false},"author":227,"featured_media":17019,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_wpscppro_dont_share_socialmedia":false,"_wpscppro_custom_social_share_image":0,"_facebook_share_type":"default","_twitter_share_type":"default","_linkedin_share_type":"default","_pinterest_share_type":"default","_linkedin_share_type_page":"default","_instagram_share_type":"default","_medium_share_type":"","_threads_share_type":"","_google_business_share_type":"","_selected_social_profile":[{"id":"skM9ewvR8O","platform":"linkedin","platformKey":0,"name":"Jason Xue","type":"person","thumbnail_url":"https:\/\/media.licdn.com\/dms\/image\/C5603AQErPqKD0j6qBg\/profile-displayphoto-shrink_100_100\/0\/1599138392315?e=1723075200&v=beta&t=joEkh1OeKQ0F-QpAPv4xxQyBdGlHyccIQZauRSs6RvU","share_type":"default"}],"_wpsp_enable_custom_social_template":false,"_wpsp_social_scheduling":{"enabled":false,"datetime":null,"platforms":[],"status":"template_only","dateOption":"today","timeOption":"now","customDays":"","customHours":"","customDate":"","customTime":"","schedulingType":"absolute"},"_wpsp_active_default_template":true},"categories":[2],"tags":[],"class_list":["post-17016","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.13 (Yoast SEO v25.8) - 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