{"id":160,"date":"2025-03-12T23:06:18","date_gmt":"2025-03-13T04:06:18","guid":{"rendered":"https:\/\/pcdiyhub.com\/?page_id=160"},"modified":"2025-03-12T23:33:30","modified_gmt":"2025-03-13T04:33:30","slug":"power-supply-unit-psu-power-supply-unit","status":"publish","type":"page","link":"https:\/\/pcdiyhub.com\/?page_id=160","title":{"rendered":"PSU (Power Supply Unit)"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/pcdiyhub.com\/?page_id=160\/#1_Structure\" >(1) Structure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/pcdiyhub.com\/?page_id=160\/#2_Working_Principle\" >(2) Working Principle<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/pcdiyhub.com\/?page_id=160\/#3_Classification\" >(3) Classification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/pcdiyhub.com\/?page_id=160\/#4_Classification_Reasons\" >(4) Classification Reasons<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Structure\"><\/span><strong>(1) Structure<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Transformer<\/strong>: Converts AC power to lower-voltage DC power.<\/li>\n\n\n\n<li><strong>Rectifier Circuit<\/strong>: Converts AC to DC.<\/li>\n\n\n\n<li><strong>Voltage Regulator<\/strong>: Ensures stable power output.<\/li>\n\n\n\n<li><strong>Cooling Fan<\/strong>: Prevents overheating.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Working_Principle\"><\/span><strong>(2) Working Principle<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The PSU converts <strong>220V (or 110V) AC power<\/strong> \u2192 <strong>12V, 5V, and 3.3V DC<\/strong> to supply power to the motherboard, CPU, GPU, and storage devices.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Classification\"><\/span><strong>(3) Classification<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Type<\/strong><\/th><th><strong>Wattage<\/strong><\/th><th><strong>Usage<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Basic PSU<\/strong><\/td><td>300W &#8211; 500W<\/td><td>Office PCs<\/td><\/tr><tr><td><strong>Gaming PSU<\/strong><\/td><td>600W &#8211; 850W<\/td><td>Gaming, dedicated GPU setups<\/td><\/tr><tr><td><strong>High-End PSU<\/strong><\/td><td>1000W+<\/td><td>Workstations, multi-GPU setups<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Classification_Reasons\"><\/span><strong>(4) Classification Reasons<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Higher wattage supports powerful GPUs<\/strong> (e.g., RTX 4090 requires 850W+).<\/li>\n\n\n\n<li><strong>80 PLUS ratings (Bronze, Gold, Platinum, Titanium) affect efficiency and power savings.<\/strong><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"825\" src=\"https:\/\/pcdiyhub.com\/wp-content\/uploads\/2025\/03\/Power-supplier-1024x825.avif\" alt=\"\" class=\"wp-image-161\" style=\"width:513px;height:auto\" srcset=\"https:\/\/pcdiyhub.com\/wp-content\/uploads\/2025\/03\/Power-supplier-1024x825.avif 1024w, https:\/\/pcdiyhub.com\/wp-content\/uploads\/2025\/03\/Power-supplier-300x242.avif 300w, https:\/\/pcdiyhub.com\/wp-content\/uploads\/2025\/03\/Power-supplier-768x618.avif 768w, https:\/\/pcdiyhub.com\/wp-content\/uploads\/2025\/03\/Power-supplier.avif 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>(1) Structure (2) Working Principle The PSU converts 220V (or 110V) AC power \u2192 12V, 5V, and 3.3V DC to supply power to the motherboard, CPU, GPU, and storage devices. (3) Classification Type Wattage Usage Basic PSU 300W &#8211; 500W Office PCs Gaming PSU 600W &#8211; 850W Gaming, dedicated GPU setups High-End PSU 1000W+ Workstations,&#8230;<\/p>\n<p class=\"more-link\"><a href=\"https:\/\/pcdiyhub.com\/?page_id=160\" class=\"themebutton3\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"class_list":["post-160","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/pcdiyhub.com\/index.php?rest_route=\/wp\/v2\/pages\/160","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pcdiyhub.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pcdiyhub.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pcdiyhub.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pcdiyhub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=160"}],"version-history":[{"count":2,"href":"https:\/\/pcdiyhub.com\/index.php?rest_route=\/wp\/v2\/pages\/160\/revisions"}],"predecessor-version":[{"id":186,"href":"https:\/\/pcdiyhub.com\/index.php?rest_route=\/wp\/v2\/pages\/160\/revisions\/186"}],"wp:attachment":[{"href":"https:\/\/pcdiyhub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=160"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}