{"id":25901,"date":"2025-11-18T15:04:32","date_gmt":"2025-11-18T15:04:32","guid":{"rendered":"https:\/\/www.northcdatacenters.com\/en\/?p=25901"},"modified":"2026-02-27T12:43:31","modified_gmt":"2026-02-27T12:43:31","slug":"high-density-data-center-solutions-for-ai-hpc","status":"publish","type":"post","link":"https:\/\/www.northcdatacenters.com\/en\/knowledge\/high-density-data-center-solutions-for-ai-hpc\/","title":{"rendered":"High-density data center solutions for AI &amp; HPC"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text margin_block_end=&#8221;&#8221; lead=&#8221;true&#8221;]<\/p>\n<p class=\"lead\">AI and high-performance computing (HPC) demand more power per rack. As a result, the need for high-density data centers is growing. Yet many existing facilities were designed for lower loads. What if your environment is still low-density and a customer suddenly needs high-density? In this article, we explain what &#8220;high-density&#8221; really means, how cooling and power need to evolve, and how you can scale up an existing site without turning everything upside down. We close with a real-world example from our data center near Basel.<\/p>\n<p>&nbsp;<\/p>\n<h2>What do we mean by a high-density data center?<\/h2>\n<p>A high-density data center is one where power per rack sits well above the usual range. Most data halls run at about 3-12 kW per rack. AI and high-performance computing (HPC) often push this to tens of kilowatts, with training peaks approaching or exceeding 100 kW. This shift affects everything: power distribution, cooling, and daily operations.<\/p>\n<p><strong>In short:<\/strong><\/p>\n<ul class=\"check-list\">\n<li>Density shift: 3 to 12 kW per rack in conventional data halls; as high as 100 kW per rack for AI\/HPC.<\/li>\n<li>More heat, more often: higher continuous thermal load plus peak events.<\/li>\n<li>Implication: air-only cooling is frequently not enough.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>Why AI and HPC change the cooling equation<\/h2>\n<p>As models and datasets grow, accelerators (GPUs\/TPUs) draw more power and generate more heat for longer periods. To keep performance stable and hardware reliable, most organisations need to move beyond air-only to liquid-assisted cooling.<\/p>\n<ul class=\"check-list\">\n<li>Higher thermal loads: AI\/HPC racks run hotter than traditional servers.<\/li>\n<li>Rising energy use: accelerator-rich nodes lift overall facility demand.<\/li>\n<li>Sustained peaks: training and simulations mean prolonged high-intensity windows.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>A practical path to high-density<\/h2>\n<p>A straightforward step for existing data halls is to install rear-door heat exchangers (RDHx). A heat exchanger at the back of the rack captures server exhaust and cools it with water before the air returns to the room. Because water absorbs about 3,000 times more heat than air, you can achieve significant efficiency gains without redesigning the entire hall. RDHx can also be combined with direct-to-chip liquid cooling for the hottest components as densities increase.<\/p>\n<p>&nbsp;<\/p>\n<h2>Designing for high-density: power, operations, compliance<\/h2>\n<ul class=\"check-list\">\n<li>Power delivery: plan for sustained high loads and peaks; revisit distribution, redundancy and protection.<\/li>\n<li>Operations: liquid-assisted cooling shifts routines from &#8220;keep water out of the data hall&#8221; to controlled water circuits at the rack or component level; scale and rollout are phased and technology-dependent, so processes and training are essential.<\/li>\n<li>Compliance &amp; data residency: upgrades should maintain national and EU requirements while providing the low-latency AI workloads need.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row_content&#8221;][vc_column]<div class=\"title-block px-3 title-block-image-right\">\n  <div class=\"container image-container\" style=\"--image-position-x: 50%;\">\n          <div class=\"video-content video-thumbnail\">\n  <div class=\"video-content-grid\">\n    \n<div class=\"poster d-flex flex-column justify-content-end align-items-center align-items-xl-start apply-video-aspect-ratio\" style=\"--poster-image: url(https:\/\/www.northcdatacenters.com\/en\/wp-content\/uploads\/sites\/2\/2025\/11\/northc-legrand-high-density-computing.webp); --aspect-ratio-x: 16; --aspect-ratio-y: 9;\">\n  <a href=\"#modal-video-69de5b51f01c9\" data-bs-toggle=\"modal\" class=\"stretched-link\" aria-label=\"Play video\"><\/a>\n  <button type=\"button\" data-bs-target=\"#modal-video-69de5b51f01c9\" data-bs-toggle=\"modal\" \n    class=\"play-button bg-primary slanted slanted-from-top-right\" aria-label=\"Play video\">\n    <i class=\"d-flex icon-play text-dark\" aria-hidden=\"true\"><jello-icon name=\"custom\/play\"><\/jello-icon><\/i>\n  <\/button>\n\n  <\/div>\n\n\n      <\/div>\n<\/div>\n      <\/div>\n\n  <div class=\"d-none d-xl-block background-with-slanted-edge slanted\"><\/div>\n\n  <div class=\"container text-container\">\n    <div class=\"text-bg-white text py-9 px-6 d-flex flex-column\">\n              <h2 class=\"font-heavy lh-sm\">NorthC and Legrand: high-density upgrade in M\u00fcnchenstein<\/h2>\n      \n      <div class=\"content lh-xl\">\n        <p>NorthC and Legrand enabled a high-density data center for AI and HPC at our M\u00fcnchenstein (Basel) site in six months.<\/p>\n<ul class=\"check-list\">\n<li><strong>Challenge:<\/strong> Low-density room, tight timeline<\/li>\n<li><strong>Solution:<\/strong> Rear door heat exchangers, phased rollout<\/li>\n<li><strong>Result:<\/strong> Lower cooling energy, better PUE<\/li>\n<\/ul>\n      <\/div>\n\n              <div class=\"d-flex gap-3 flex-wrap mt-4\">\n                      \n  <a href=\"\/en\/cases\/legrand-and-northc-enable-ai-hpc\/\" class=\"btn btn-primary btn-video\" target=\"\">\n    Read full customer case  <\/a>\n                  <\/div>\n          <\/div>\n  <\/div>\n<\/div>[\/vc_column][\/vc_row][vc_row][vc_column offset=&#8221;vc_col-md-offset-3 vc_col-md-6&#8243;]\n<script type=\"application\/ld+json\">\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What exactly is high-density computing?\",\n            \"url\": \"https:\/\/www.northcdatacenters.com\/en\/knowledge\/high-density-data-center-solutions-for-ai-hpc\/#what-exactly-is-high-density-computing\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"High-density computing packs more compute into fewer racks by clustering GPUs and other accelerators. It increases thermal density and continuous load, changing how you plan power, cooling, and daily operations.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much power per rack counts as \\\"high-density\\\"?\",\n            \"url\": \"https:\/\/www.northcdatacenters.com\/en\/knowledge\/high-density-data-center-solutions-for-ai-hpc\/#how-much-power-per-rack-counts-as-high-density\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A common threshold is 15-20 kW per rack. For AI and high-performance computing, plan for about 100 kW per rack today. With liquid cooling, some deployments already exceed 100 kW per rack, and densities are expected to keep rising.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why is high-density computing gaining importance?\",\n            \"url\": \"https:\/\/www.northcdatacenters.com\/en\/knowledge\/high-density-data-center-solutions-for-ai-hpc\/#why-is-high-density-computing-gaining-importance\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"AI and HPC workloads are growing rapidly and run on GPUs and other accelerators that draw more power. Larger models and longer training cycles increase heat and continuous load, making high-density designs necessary.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What challenges arise with higher density in the data center?\",\n            \"url\": \"https:\/\/www.northcdatacenters.com\/en\/knowledge\/high-density-data-center-solutions-for-ai-hpc\/#what-challenges-arise-with-higher-density-in-the-data-center\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Cooling and power delivery become the primary constraints, and operations need to adapt. The old idea of keeping water out of the data hall no longer fits many environments. To prepare existing sites, use modular designs and phased retrofits with upgraded power distribution and liquid-assisted cooling.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which cooling technologies enable high-density for AI and HPC?\",\n            \"url\": \"https:\/\/www.northcdatacenters.com\/en\/knowledge\/high-density-data-center-solutions-for-ai-hpc\/#which-cooling-technologies-enable-high-density-for-ai-and-hpc\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Rear Door Heat Exchangers (RDHx) provide indirect liquid cooling at the rack level and are a practical retrofit for existing data rooms. For very high densities, add Direct-to-Chip Liquid Cooling on the hottest components.\\nThere are also immersion cooling solutions for even higher densities and specific use cases. Want to know more about cooling options for AI and high-performance computing? Read our blog on Immersion Cooling and Liquid Cooling.\"\n            }\n        }\n    ]\n}<\/script>\n\n<div class=\"faq-container\">\n  \n  <div class=\"faq-content d-flex flex-column gap-12\">\n    <div class=\"faq-no-results d-none\">\n      <p>No questions and answers were found that match your search query. Please try a different search term.<\/p>\n    <\/div>\n          <div id=\"faq_25955\" class=\"faq-group\">\n                  <div class=\"faq-header\">\n                          <h2 class=\"faq-title\">Frequently asked questions about high-density computing in our data centers<\/h2>\n                        \n                          <div class=\"faq-introduction\">\n                <p>High-density computing concentrates more power and heat per rack than conventional setups. This FAQ explains what it is, why it matters for AI and HPC, and how to plan cooling, power, and operations in new or existing facilities.<\/p>\n              <\/div>\n                      <\/div>\n        \n        <div class=\"accordion faq-accordion wpb_content_element\" id=\"f_69de5b51f0545_25955\">\n                                  <div id=\"what-exactly-is-high-density-computing\" class=\"accordion-item\" data-keywords=\"\">\n              <h2 class=\"accordion-header\">\n                <button class=\"accordion-button \" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#f_69de5b51f0545_25955_0\" aria-expanded=\"true\" aria-controls=\"f_69de5b51f0545_25955_0\">\n                  What exactly is high-density computing?                <\/button>\n              <\/h2>\n              <div id=\"f_69de5b51f0545_25955_0\" class=\"accordion-collapse collapse show\" data-bs-parent=\"#f_69de5b51f0545_25955\">\n                <div class=\"accordion-body\">\n                  <div class=\"accordion-content\">\n                    <p>High-density computing packs more compute into fewer racks by clustering GPUs and other accelerators. It increases thermal density and continuous load, changing how you plan power, cooling, and daily operations.<\/p>\n\n                                      <\/div>\n\n                                  <\/div>\n              <\/div>\n            <\/div>\n                                  <div id=\"how-much-power-per-rack-counts-as-high-density\" class=\"accordion-item\" data-keywords=\"\">\n              <h2 class=\"accordion-header\">\n                <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#f_69de5b51f0545_25955_1\" aria-expanded=\"false\" aria-controls=\"f_69de5b51f0545_25955_1\">\n                  How much power per rack counts as \"high-density\"?                <\/button>\n              <\/h2>\n              <div id=\"f_69de5b51f0545_25955_1\" class=\"accordion-collapse collapse \" data-bs-parent=\"#f_69de5b51f0545_25955\">\n                <div class=\"accordion-body\">\n                  <div class=\"accordion-content\">\n                    <p>A common threshold is 15-20 kW per rack. For AI and high-performance computing, plan for about 100 kW per rack today. With liquid cooling, some deployments already exceed 100 kW per rack, and densities are expected to keep rising.<\/p>\n\n                                      <\/div>\n\n                                  <\/div>\n              <\/div>\n            <\/div>\n                                  <div id=\"why-is-high-density-computing-gaining-importance\" class=\"accordion-item\" data-keywords=\"\">\n              <h2 class=\"accordion-header\">\n                <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#f_69de5b51f0545_25955_2\" aria-expanded=\"false\" aria-controls=\"f_69de5b51f0545_25955_2\">\n                  Why is high-density computing gaining importance?                <\/button>\n              <\/h2>\n              <div id=\"f_69de5b51f0545_25955_2\" class=\"accordion-collapse collapse \" data-bs-parent=\"#f_69de5b51f0545_25955\">\n                <div class=\"accordion-body\">\n                  <div class=\"accordion-content\">\n                    <p>AI and HPC workloads are growing rapidly and run on GPUs and other accelerators that draw more power. Larger models and longer training cycles increase heat and continuous load, making high-density designs necessary.<\/p>\n\n                                      <\/div>\n\n                                  <\/div>\n              <\/div>\n            <\/div>\n                                  <div id=\"what-challenges-arise-with-higher-density-in-the-data-center\" class=\"accordion-item\" data-keywords=\"\">\n              <h2 class=\"accordion-header\">\n                <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#f_69de5b51f0545_25955_3\" aria-expanded=\"false\" aria-controls=\"f_69de5b51f0545_25955_3\">\n                  What challenges arise with higher density in the data center?                <\/button>\n              <\/h2>\n              <div id=\"f_69de5b51f0545_25955_3\" class=\"accordion-collapse collapse \" data-bs-parent=\"#f_69de5b51f0545_25955\">\n                <div class=\"accordion-body\">\n                  <div class=\"accordion-content\">\n                    <p>Cooling and power delivery become the primary constraints, and operations need to adapt. The old idea of keeping water out of the data hall no longer fits many environments. To prepare existing sites, use modular designs and phased retrofits with upgraded power distribution and liquid-assisted cooling.<\/p>\n\n                                      <\/div>\n\n                                  <\/div>\n              <\/div>\n            <\/div>\n                                  <div id=\"which-cooling-technologies-enable-high-density-for-ai-and-hpc\" class=\"accordion-item\" data-keywords=\"\">\n              <h2 class=\"accordion-header\">\n                <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#f_69de5b51f0545_25955_4\" aria-expanded=\"false\" aria-controls=\"f_69de5b51f0545_25955_4\">\n                  Which cooling technologies enable high-density for AI and HPC?                <\/button>\n              <\/h2>\n              <div id=\"f_69de5b51f0545_25955_4\" class=\"accordion-collapse collapse \" data-bs-parent=\"#f_69de5b51f0545_25955\">\n                <div class=\"accordion-body\">\n                  <div class=\"accordion-content\">\n                    <p>Rear Door Heat Exchangers (RDHx) provide indirect liquid cooling at the rack level and are a practical retrofit for existing data rooms. For very high densities, add Direct-to-Chip Liquid Cooling on the hottest components.<\/p>\n<p>There are also immersion cooling solutions for even higher densities and specific use cases. Want to know more about cooling options for AI and high-performance computing? Read our blog on Immersion Cooling and Liquid Cooling.<\/p>\n\n                                                                \n  <a href=\"\/en\/knowledge\/immersion-cooling-and-liquid-cooling-the-future-of-ai-data-centers\/\" class=\"btn btn-primary btn-video\" target=\"\">\n    Read our blog post  <\/a>\n                                      <\/div>\n\n                                  <\/div>\n              <\/div>\n            <\/div>\n                  <\/div>\n\n        <button class=\"btn btn-secondary d-none more-questions-btn\">Show more<\/button>\n      <\/div>\n      <\/div>\n<\/div>[\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>What if your environment is still low-density and a customer suddenly needs high-density now? In this article, we explain what \u201chigh-density\u201d really means, how cooling and power need to evolve, and how you can retrofit an existing site.<\/p>\n","protected":false},"author":8,"featured_media":25906,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[41],"tags":[],"class_list":["post-25901","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","branch-ai","branch-ict"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>High-density data center solutions for AI &amp; 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