{"id":36203,"date":"2026-02-08T11:42:09","date_gmt":"2026-02-08T11:42:09","guid":{"rendered":"https:\/\/www.manchester-pc.co.uk\/shop\/?post_type=product&p=36203"},"modified":"2026-07-09T14:20:00","modified_gmt":"2026-07-09T13:20:00","slug":"be-quiet-system-power-11-450w-power-supply","status":"publish","type":"product","link":"https:\/\/www.manchester-pc.co.uk\/shop\/product\/be-quiet-system-power-11-450w-power-supply\/","title":{"rendered":"be quiet! System Power 11 450w Power Supply"},"content":{"rendered":"
\n
\n

PROVEN RELIABILITY, QUIET OPERATION<\/p>\n

be quiet! System Power 11 450W<\/h1>\n

System Power 11 450W is built with value-oriented users in mind who do not want to pass on reliability and quietness. With ATX 3.1 compatibility, PCIe 5.1 GPU support, a temperature-controlled 120mm fan and remarkably low stand-by drain, it delivers dependable performance even at entry-level.<\/p>\n

ATX 3.1 \u2022 PCIe 5.1 Ready<\/span> 80 PLUS\u00ae Bronze (up to 89.0%)<\/span> Strong 12V Rail<\/span> Stand-by Drain < 0.15W<\/span><\/div>\n
\n
\"be<\/div>\n

be quiet! System Power 11 450W<\/a><\/p>\n<\/div>\n<\/header>\n

\n
\n

Core Highlights<\/h3>\n
    \n
  • ATX 3.1 PSU with support for PCIe 5.1 GPUs and GPUs with 6+2 pin connectors<\/li>\n
  • 2 PCIe 6-2 connectors<\/li>\n
  • Temperature-controlled 120mm quality fan reduces system noise<\/li>\n
  • Tight voltage regulation using DC-to-DC technology<\/li>\n<\/ul>\n<\/div>\n
    \n

    Future-Proof Your System<\/h3>\n

    System Power 11 450W fulfills all ATX 3.1 specifications and handles power excursions up to double its rated power with ease. This makes the PSU versatile and the perfect choice for systems of today and the ones to come.<\/p>\n

    ATX 3.1 Compliant<\/span>
    \nHandles Power Excursions up to 2\u00d7 Rated Power<\/span>
    \nPCIe 5.1 GPU Support<\/span><\/div>\n<\/div>\n
    \n

    Very Quiet Operation<\/h3>\n

    Equipped with a temperature-controlled 120mm quality fan, System Power 11 450W delivers low noise operation and remarkable quietness at this price-level, staying true to the be quiet! reputation.<\/p>\n

    120mm Quality Fan<\/span>
    \nTemperature-Controlled<\/span>
    \nLow Noise Operation<\/span><\/div>\n<\/div>\n
    \n

    High Performance for Your System<\/h3>\n

    System Power 11 450W provides stable and dependable power for CPU and GPU, ensuring steady and reliable operation even when your PC meets an unexpectedly heavy load.<\/p>\n

    Stable CPU & GPU Power<\/span>
    \nRock-Solid Stability<\/span>
    \nStrong 12V Rail<\/span><\/div>\n<\/div>\n
    \n

    80 PLUS\u00ae Bronze Certification<\/h3>\n

    The 80 PLUS\u00ae Bronze certification with an efficiency rating of up to 89.0% is convincing evidence of this PSU\u2019s power saving operation. A stand-by drain of less than 0.15 watts further underlines its efficient design.<\/p>\n

    80 PLUS\u00ae Bronze<\/span>
    \nUp to 89.0% Efficiency<\/span>
    \n< 0.15W Stand-by Drain<\/span><\/div>\n<\/div>\n
    \n

    Strong 12V Rail & Safety Protections<\/h3>\n

    With a strong 12V rail, System Power 11 450W provides enough power for demanding graphics cards. Integrated safety protections defend against overcurrents, over- and undervoltages, overtemperature, short circuits and overloads, helping to keep valuable components safe.<\/p>\n

    Strong 12V Rail<\/span>
    \nSafety Protections<\/span>
    \nDC-to-DC Technology<\/span><\/div>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

    PROVEN RELIABILITY, QUIET OPERATION be quiet! System Power 11 450W System Power 11 450W is built with value-oriented users in<\/p>\n","protected":false},"featured_media":36277,"template":"","meta":{"_acf_changed":false,"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"be quiet! System Power 11 450W ATX 3.1 PSU \u2013 80 PLUS\u00ae Bronze, PCIe 5.1 Ready","_yoast_wpseo_metadesc":"be quiet! System Power 11 450w Power Supply: quiet, reliable power supply from authorised UK retailer Manchester PC. Fast nationwide delivery."},"brands":[52],"product_cat":[83],"product_tag":[],"class_list":["post-36203","product","type-product","status-publish","has-post-thumbnail","product_brand-be-quiet","product_cat-power-supplies","first","outofstock","sold-individually","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"\nbe quiet! System Power 11 450W ATX 3.1 PSU \u2013 80 PLUS\u00ae Bronze, PCIe 5.1 Ready<\/title>\n<meta name=\"description\" content=\"be quiet! 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