{"id":5574,"date":"2025-04-01T14:07:17","date_gmt":"2025-04-01T06:07:17","guid":{"rendered":"https:\/\/pcunboxing.com\/?p=5574"},"modified":"2025-12-26T12:26:24","modified_gmt":"2025-12-26T04:26:24","slug":"ddr5","status":"publish","type":"post","link":"https:\/\/pcunboxing.com\/en\/ddr5\/","title":{"rendered":"DDR5 Memory Common Problems and Related Solutions"},"content":{"rendered":"<p><a href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/Trident-Z5-CK-21.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4561\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/Trident-Z5-CK-21.jpg\" alt=\"\" width=\"1500\" height=\"1000\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/Trident-Z5-CK-21.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/Trident-Z5-CK-21-300x200.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/Trident-Z5-CK-21-1024x683.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/Trident-Z5-CK-21-150x100.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/Trident-Z5-CK-21-768x512.jpg 768w, https:\/\/pcunboxing.com\/wp-content\/uploads\/Trident-Z5-CK-21-450x300.jpg 450w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/a><\/p>\n<p>This article, which will be updated from time to time, is intended to answer common questions about DDR5 memory.<\/p>\n<div class=\"contents_c19a55\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_56_1 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" >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\" role=\"button\"><label for=\"item-6a757079a549a\" ><span class=\"\"><span style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd962c;color:#dd962c\" 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: #dd962c;color:#dd962c\" 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><\/label><input aria-label=\"Toggle\" type=\"checkbox\"  id=\"item-6a757079a549a\"><\/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:\/\/pcunboxing.com\/en\/ddr5\/#%e8%b2%b7%e8%a8%98%e6%86%b6%e9%ab%94%e5%89%8d%e5%a6%82%e4%bd%95%e6%9f%a5%e8%a9%a2%e8%a8%98%e6%86%b6%e9%ab%94qvl%ef%bc%8c%e7%a2%ba%e8%aa%8d%e8%a8%98%e6%86%b6%e9%ab%94%e8%b7%9f%e8%99%95%e7%90%86%e5%99%a8%e4%b8%bb%e6%a9%9f%e6%9d%bf%e6%98%af%e5%90%a6%e7%9b%b8%e5%ae%b9%ef%bc%9f\" title=\"How do I check the QVL of the memory before I buy it to make sure that the memory is compatible with the processor\/motherboard?\">How do I check the QVL of the memory before I buy it to make sure that the memory is compatible with the processor\/motherboard?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/pcunboxing.com\/en\/ddr5\/#%e8%a8%98%e6%86%b6%e9%ab%94%e7%82%ba%e4%bb%80%e9%ba%bc%e8%b7%91%e4%b8%8d%e5%88%b0%e6%a8%99%e7%a8%b1%e7%9a%84%e9%a0%bb%e7%8e%87%ef%bc%9f\" title=\"Why does the memory not run at the nominal frequency?\">Why does the memory not run at the nominal frequency?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/pcunboxing.com\/en\/ddr5\/#%e5%a6%82%e4%bd%95%e6%aa%a2%e6%9f%a5%e8%a8%98%e6%86%b6%e9%ab%94%e9%a0%bb%e7%8e%87%e8%88%87-imc-%e8%a8%98%e6%86%b6%e9%ab%94%e6%8e%a7%e5%88%b6%e5%99%a8%e9%a0%bb%e7%8e%87%e7%9a%84%e9%81%8b%e4%bd%9c%e6%a8%a1%e5%bc%8f\" title=\"How to check the operating mode of the memory frequency and IMC frequency\">How to check the operating mode of the memory frequency and IMC frequency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/pcunboxing.com\/en\/ddr5\/#%e5%8d%87%e7%b4%9a%e8%a8%98%e6%86%b6%e9%ab%94%e7%9a%84%e6%ad%a3%e7%a2%ba-sop\" title=\"Correct SOP for upgrading memory\">Correct SOP for upgrading memory<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/pcunboxing.com\/en\/ddr5\/#amd-expo-extended-profiles-foroverclocking-%e8%b7%9f-intel-xmp-30-extreme-memory-profile-%e5%b7%ae%e7%95%b0%e8%88%87%e5%b8%b8%e8%a6%8b%e5%95%8f%e9%a1%8c\" title=\"AMD EXPO (Extended Profiles for Overclocking) and Intel XMP 3.0 (Extreme Memory Profile) Differences and FAQs\">AMD EXPO (Extended Profiles for Overclocking) and Intel XMP 3.0 (Extreme Memory Profile) Differences and FAQs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/pcunboxing.com\/en\/ddr5\/#%e6%83%b3%e8%a6%81%e5%9b%9b%e6%a2%9d-ddr5-%e8%a8%98%e6%86%b6%e9%ab%94%e6%8f%92%e6%bb%bf%e8%a9%b2%e6%80%8e%e9%ba%bc%e6%ba%96%e5%82%99\" title=\"What should I do if I want to fill up four DDR5 memory sticks?\">What should I do if I want to fill up four DDR5 memory sticks?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/pcunboxing.com\/en\/ddr5\/#%e8%a8%98%e6%86%b6%e9%ab%94-profile-%e9%96%8b%e4%ba%86%e9%81%8e%e4%b8%8d%e4%ba%86%e4%b8%bb%e6%a9%9f%e6%9d%bf%e8%87%aa%e6%aa%a2%ef%bc%8c%e5%8f%af%e4%bb%a5%e5%98%97%e8%a9%a6%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e5%bc%8f\" title=\"Memory Profile open can not pass the motherboard self-test, can try to solve the problem\">Memory Profile open can not pass the motherboard self-test, can try to solve the problem<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/pcunboxing.com\/en\/ddr5\/#asus-%e8%8f%af%e7%a2%a9-ai-overclock-tuner-%e8%a8%ad%e5%ae%9a%e8%a6%81%e9%81%b8%e4%bb%80%e9%ba%bc%ef%bc%9f\" title=\"What is the ASUS Ai Overclock Tuner setting to choose?\">What is the ASUS Ai Overclock Tuner setting to choose?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"message-content-1347809006080622593\" class=\"markup__75297 messageContent_c19a55\"><span class=\"ez-toc-section\" id=\"%e8%b2%b7%e8%a8%98%e6%86%b6%e9%ab%94%e5%89%8d%e5%a6%82%e4%bd%95%e6%9f%a5%e8%a9%a2%e8%a8%98%e6%86%b6%e9%ab%94qvl%ef%bc%8c%e7%a2%ba%e8%aa%8d%e8%a8%98%e6%86%b6%e9%ab%94%e8%b7%9f%e8%99%95%e7%90%86%e5%99%a8%e4%b8%bb%e6%a9%9f%e6%9d%bf%e6%98%af%e5%90%a6%e7%9b%b8%e5%ae%b9%ef%bc%9f\"><\/span><strong>How do I check the QVL of the memory before I buy it to make sure that the memory is compatible with the processor\/motherboard?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li class=\"markup__75297 messageContent_c19a55\">Go to the official website of the motherboard model you want to use, and click on Support and Download.<\/li>\n<li class=\"markup__75297 messageContent_c19a55\">Tap Memory Support or QVL (Memory Compatibility List)<\/li>\n<li class=\"markup__75297 messageContent_c19a55\">Select the processor \u201cseries\u201d you want to use, e.g. for 9800X3D, select \"amd ryzen 9000 series processors\".\u201d<\/li>\n<li class=\"markup__75297 messageContent_c19a55\">Go to the official website of the memory brand to look for the documentation and find the code number of the memory (note that the code numbers of single and two sticks are different, usually the code number of two sticks is the main one).<\/li>\n<li class=\"markup__75297 messageContent_c19a55\">Use the search function on the motherboard's official website to copy and paste to confirm whether QVL compatibility verification has been performed.<\/li>\n<li class=\"markup__75297 messageContent_c19a55\">Can't find it =&gt; then don't buy it with it \/ Can find it =&gt; then buy it with it<\/li>\n<li class=\"markup__75297 messageContent_c19a55\">I have QVL, but it doesn't work? Please contact the motherboard and memory brand customer service for assistance.<\/li>\n<\/ol>\n<p><a href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5578\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-1.jpg\" alt=\"\" width=\"1500\" height=\"729\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-1.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-1-300x146.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-1-1024x498.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-1-150x73.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-1-768x373.jpg 768w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/a><\/p>\n<p>\u2206 Gigabyte motherboard demo.<\/p>\n<\/div>\n<p><a href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5579\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-2.jpg\" alt=\"\" width=\"1500\" height=\"1416\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-2.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-2-300x283.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-2-1024x967.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-2-150x142.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-2-768x725.jpg 768w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/a><\/p>\n<p>\u2206 ASRock motherboard demo.<\/p>\n<p><a href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5580\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-3.jpg\" alt=\"\" width=\"1500\" height=\"1336\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-3.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-3-300x267.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-3-1024x912.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-3-150x134.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/DDR5-3-768x684.jpg 768w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/a><\/p>\n<p>Demonstration of QVL serial number lookup for a \u2206 memory module.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%e8%a8%98%e6%86%b6%e9%ab%94%e7%82%ba%e4%bb%80%e9%ba%bc%e8%b7%91%e4%b8%8d%e5%88%b0%e6%a8%99%e7%a8%b1%e7%9a%84%e9%a0%bb%e7%8e%87%ef%bc%9f\"><\/span><strong>Why does the memory not run at the nominal frequency?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Check if the Profile setting in the motherboard's BIOS has Profile1 turned on. Below is the approximate name of each BIOS Profile setting, which is provided for you to check the name in the BIOS for confirmation.<\/p>\n<ul>\n<li>GIGABYTE:XMP\/EXPO Profile<\/li>\n<li>ASRock:Profile or DRAM Profile Configuration<\/li>\n<li>Little Lizard : XMP or EXPO Profile<\/li>\n<li>Common : AMD_DOCP \/ Intel_XMP or EXPO<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%e5%a6%82%e4%bd%95%e6%aa%a2%e6%9f%a5%e8%a8%98%e6%86%b6%e9%ab%94%e9%a0%bb%e7%8e%87%e8%88%87-imc-%e8%a8%98%e6%86%b6%e9%ab%94%e6%8e%a7%e5%88%b6%e5%99%a8%e9%a0%bb%e7%8e%87%e7%9a%84%e9%81%8b%e4%bd%9c%e6%a8%a1%e5%bc%8f\"><\/span><strong>How to check<\/strong><strong>Memory Frequency<\/strong><strong>Mode of operation with IMC memory controller frequency<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For current DDR5 platforms, the Memory Controller Frequency and Memory Frequency of Intel platforms are in Gear 2 mode (i.e. \u00bd:1), and for Z890, with Gear Mode Auto, it is usually Gear 2 (depending on the board manufacturer) up to 8800 ~ 9000 MT\/s. Above 9200 MT\/s, it is usually Gear 4 (i.e. \u00bc:1). In the case of Z890, if the Gear Mode is kept Auto, it will be Gear 2 (\u00bd:1) up to 8800 ~ 9000 MT\/s (depending on the board manufacturer), and then it will be Gear 4 (\u00bc:1) up to 9200 MT\/s and above.<\/p>\n<p>AMD AM5 platform is based on the UCLK memory controller frequency, and MCLK memory equivalent frequency, the two frequency ratio to distinguish the mode of operation UCLK = MCLK or UCLK = MCLK\/2, the Chinese side is called what the split-frequency, heterodyne frequency, the same frequency, the author does not care about what the language I am talking about the UCLK = MCLK this way, to the X870 in the case of the UCLK Mode remains Auto. In the case of X870, with UCLK Mode Auto, AM5 is usually UCLK=MCLK below 6000 MT\/s, and UCLK=MCLK\/2 from 6200 MT\/s onwards.<\/p>\n<p>All in all, Intel and AMD platforms operate on different principles, so it's funny to confuse the two. In addition, the DRAM Frequency you see in the CPU-Z software should be multiplied by 2 to show the actual full memory frequency.<\/p>\n<p>How do I check if my Intel platform is Gear 2 or Gear 4 in my system? First, use a newer version of CPU-Z, then click on the Memory page and look at the ratio of Mem Controller Freq. to DRAM Frequency.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-5.jpg\" \/><\/p>\n<p>In Gear 2 mode, Mem Controller Freq. and DRAM Frequency will be \u00bd:1, the former Mem Controller Freq. frequency x2 = the latter DRAM Frequency, which is Gear 2. In this picture, 2000 x2 = 4000.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-20.jpg\" \/><\/p>\n<p>For Gear 4 mode, it is the former Mem Controller Freq. frequency x4 = the latter DRAM Frequency, which is Gear 4. In this picture, it is 1316.9 x4 = about 5267.<\/p>\n<p>&nbsp;<\/p>\n<p>And how does the AMD platform check if it is UCLK=MCLK or UCLK=MCLK\/2 in the system? First, use a newer version of CPU-Z, then click on the Memory page to see the ratio of Mem Controller Freq. to DRAM Frequency.<\/p>\n<p><a href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-55.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8405\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-55.jpg\" alt=\"\" width=\"1500\" height=\"1006\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-55.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-55-300x201.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-55-1024x687.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-55-150x101.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-55-768x515.jpg 768w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/a><\/p>\n<p>\u25b3 UCLK=MCLK mode, Mem Controller Freq. and DRAM Frequency will be the same frequency, the former Mem Controller Freq. frequency = the latter DRAM Frequency, that is UCLK=MCLK, in this picture 3004.1 = 3004.1 ( 6000 MT\/s).<\/p>\n<p><a href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-54.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8406\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-54.jpg\" alt=\"\" width=\"1500\" height=\"1000\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-54.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-54-300x200.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-54-1024x683.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-54-150x100.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-54-768x512.jpg 768w, https:\/\/pcunboxing.com\/wp-content\/uploads\/origin-code-vortex-54-450x300.jpg 450w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/a><\/p>\n<p>\u25b3 UCLK=MCLK\/2 mode, Mem Controller Freq. and DRAM Frequency will be \u00bd:1, the former Mem Controller Freq. frequency x2 = the latter DRAM Frequency, that is UCLK=MCLK\/2, in this picture 2003.4 x2 = 4006.7 (8000 MT\/s). 4006.7 (8000 MT\/s).<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%e5%8d%87%e7%b4%9a%e8%a8%98%e6%86%b6%e9%ab%94%e7%9a%84%e6%ad%a3%e7%a2%ba-sop\"><\/span><strong>Correct SOP for upgrading memory<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>When the old memory is still on the motherboard, reset the XMP \/ EXPO Profile in the BIOS to the default (Auto\/Disabled) state.<\/li>\n<li>Then power off and replace the memory with a new one.<\/li>\n<li>Update the BIOS at the JEDEC frequency (recommended, but not necessarily necessary, and can be done when the new memory profile fails to pass the self-test or is unstable).<\/li>\n<li>Open the XMP \/ EXPO Profile parameter of the new memory itself.<\/li>\n<\/ol>\n<p>*Supplementary: If the new memory can not pass the self-test at the JEDEC frequency, it is recommended to replace the old memory to update the BIOS, and then install the new memory to try it out.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"amd-expo-extended-profiles-foroverclocking-%e8%b7%9f-intel-xmp-30-extreme-memory-profile-%e5%b7%ae%e7%95%b0%e8%88%87%e5%b8%b8%e8%a6%8b%e5%95%8f%e9%a1%8c\"><\/span>AMD EXPO (Extended Profiles for Overclocking) and Intel XMP 3.0 (Extreme Memory Profile) Differences and FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Can't AM5 platform use XMP memory or Intel platform use EXPO memory? Can AMD use EXPO and Intel use XMP?<\/li>\n<\/ul>\n<p><strong>solution (a math equation)<\/strong>-&gt; No, AM5 can use EXPO and XMP memory, and vice versa, Intel can also use both, the success of overclocking and stability depends on the overclocking capability of CPU\/MB\/BIOS\/DRAM. However, it is always recommended to use QVL as the main overclocking method, it is the safest for you, next is the QVL query SOP for reference.<\/p>\n<ul>\n<li>What is the difference between AMD EXPO (Extended Profiles for Overclocking) and Intel XMP 3.0 (Extreme Memory Profile)?<\/li>\n<\/ul>\n<p><strong>solution (a math equation)<\/strong>-&gt; There is no difference in the fundamental principle of the operation, it's all about writing the overclocking parameters in the SPD. The only difference is the input of the identifier in the SPD profile, but that has nothing to do with the user, so you can treat it as no difference.<\/p>\n<ul>\n<li>Will AMD EXPO and Intel XMP 3.0 memory be optimized for compatibility and stability based on their respective platforms (EXPO to AM5 motherboards\/ XMP to Intel motherboards)?<\/li>\n<\/ul>\n<p><strong>solution (a math equation)<\/strong>-&gt; Look at the different practices of memory brands and board makers, some brands will optimize for the combination of makers (e.g. EXPO to AM5 platform), some will not. However, memory manufacturers usually develop specifications according to the platform's capability, and will not mass produce memory profiles that exceed the platform's capability, e.g., EXPO cannot mass produce 9000 MT\/s profiles now.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%e6%83%b3%e8%a6%81%e5%9b%9b%e6%a2%9d-ddr5-%e8%a8%98%e6%86%b6%e9%ab%94%e6%8f%92%e6%bb%bf%e8%a9%b2%e6%80%8e%e9%ba%bc%e6%ba%96%e5%82%99\"><\/span><strong>What should I do if I want to fill up four DDR5 memory sticks?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To plug in four DDR5 memory modules on a consumer platform, here are some of the things you can do to further increase the chances of stable usage of the built-in overclocking profile with a single click.<\/p>\n<ol>\n<li>Direct purchase of memory module kits in sets of four, such as the one in this unboxing. <a href=\"https:\/\/pcunboxing.com\/en\/flare-x5\/\" target=\"_blank\" rel=\"noopener\">G.SKILL Gigabyte Flare X5 Flame Gun DDR5 6000 CL28 192GB (4x48GB) Memory Module Kit<\/a>Instead of purchasing two sets of two strips to mix and match teams.<\/li>\n<li>It is recommended to select motherboards, processor series, and memory modules that meet the QVL (Qualified Vendor List) compatibility list, and try not to miss any.<\/li>\n<li>If budget permits, try to choose a higher-end motherboard model, as higher-end or flagship models have better PCB materials for better compatibility with 2R high-capacity quad-bar memory insertion, and it is recommended to update the BIOS to the latest version.<\/li>\n<li>The processor is recommended to be selected according to the series indicated in the QVL list, and the memory controller of the processor itself will also affect whether it can pass the self-test or stabilize the use, but this part is a lottery for the average consumer, and it depends on the luck of the draw.<\/li>\n<li>The four memory modules are installed in accordance with the SN last two codes in the order of installation, some module brand shipment verification may be in accordance with the order of their test to number, the insurance point in accordance with the last two codes in the order of sequence.<\/li>\n<li>Enhance memory cooling planning if the motherboard accessories are not compatible with the memory.\u00a0<a href=\"https:\/\/pcunboxing.com\/en\/z890-aorus-master\/\" target=\"_blank\" rel=\"noopener\">GIGABYTE Z890 AORUS MASTER<\/a>\u3001<a href=\"https:\/\/pcunboxing.com\/en\/x870e-aorus-master\/\" target=\"_blank\" rel=\"noopener\">X870E AORUS MASTER<\/a>\u00a0A memory fan is also available and is recommended to be used in conjunction with a memory fan to enhance memory cooling and bring more stable usage.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%e8%a8%98%e6%86%b6%e9%ab%94-profile-%e9%96%8b%e4%ba%86%e9%81%8e%e4%b8%8d%e4%ba%86%e4%b8%bb%e6%a9%9f%e6%9d%bf%e8%87%aa%e6%aa%a2%ef%bc%8c%e5%8f%af%e4%bb%a5%e5%98%97%e8%a9%a6%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e5%bc%8f\"><\/span>Memory Profile open can not pass the motherboard self-test, can try to solve the problem<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If you can't get past the motherboard's self-test after opening the Memory Profile in the BIOS, and you've updated to the latest BIOS version, you can still try to see the following ways, and you might be able to get past the self-test and enter the system to use it.<\/p>\n<ul>\n<li>Check that the memory is correctly installed in slots A2 and B2 (the second and fourth slots from left to right on the motherboard, counting from the CPU). By installing the two memories in these two positions, the memory can more easily operate at a higher frequency.<\/li>\n<li>The two memories are interchangeable.<\/li>\n<li>Check if the water-cooled PUMP has been set to run at full speed, because in some cases, if the processor temperature is too high during the self-test, the self-test will fail (even if the Memory Profile is turned on), and this may happen in the case of a one-piece water-cooler with poor cooling performance.<\/li>\n<li>Adjust the processor operating mode to the motherboard factory or processor overclocking mode, for example:<a href=\"https:\/\/pcunboxing.com\/en\/gigabyte-perfdrive\/\" target=\"_blank\" rel=\"noopener\">GIGABYTE PerfDrive<\/a>For example, you can set the overclocking profile of AMD PBO (Precision Boost Overdrive), Power Delivery Profile, AMD PBO (Precision Boost Overdrive) as the startup or the overclocking profile of the board manufacturer's optimization, because these optimizations may synchronously set the settings related to the memory train or voltage, so that when you turn on the overclocking-related settings of the processor, it will pass the self-test under the same platform, memory, and BIOS conditions. Therefore, after turning on the processor overclocking related settings, it is possible to pass the self-test under the same platform, memory, and BIOS conditions.<\/li>\n<li>For AM5 platform, it is highly recommended to enter Advanced CPU Settings (GIGABYTE) or AMD Overclocking setting in BIOS and set Precision Boost Overdrive (PBO) to Enabled, which has a very high chance of solving the problem of Profile auto-detect. The following are some examples of how you can use the PBO to check the profile of your PC.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"asus-%e8%8f%af%e7%a2%a9-ai-overclock-tuner-%e8%a8%ad%e5%ae%9a%e8%a6%81%e9%81%b8%e4%bb%80%e9%ba%bc%ef%bc%9f\"><\/span>What is the ASUS Ai Overclock Tuner setting to choose?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>There is an Ai Overclock Tuner setting in the BIOS of Pegatron, and I am personally curious about the performance difference of this setting. In this motherboard with\u00a0<a href=\"https:\/\/pcunboxing.com\/en\/ddr5-2\/\" target=\"_blank\" rel=\"noopener\">G.SKILL Trident Z5 Royal Neo Royal Halberd EXPO Edition DDR5 8000MT\/s 48GB (2x24GB)<\/a>\u00a0When using a dual-channel memory set, you can see EXPO I, EXPO II, EXPO Tweaked, AEMP, On The fly and so on, and the author is curious about the performance of EXPO I, EXPO II, EXPO Tweaked, but because this time with an AMD Ryzen 5 8400F processor, the performance of read and copy will not be as good as a dual CCD processor due to the limitations of a single CCD processor. However, since we are using an AMD Ryzen 5 8400F processor, the read and copy performance is not as good as a dual CCD processor due to the limitations of a single CCD processor, and is usually only within 80GB, so we will take a look at the write and latency performance to see if it has changed.<\/p>\n<ul>\n<li>EXPO I: Load memory overclocking profile related timings and apply ASUS optimization.<\/li>\n<li>EXPO II: Overclocking Profile written in loaded memory.<\/li>\n<li>EXPO Tweaked: Loads memory overclocking profiles and adjusts them to improve performance.<\/li>\n<li>AEMP: Provides an optimized profile based on the memory IC, allowing JEDEC-spec memory to gain additional overclocking performance.<\/li>\n<li>On The fly: Gamers will be able to turn on and off the EXPO Profile in the system with the new Ryzen Master software, which seems to be able to adjust memory overclocking related settings as well.<\/li>\n<\/ul>\n<p><a class=\"fancybox image\" href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-8.jpg\" aria-controls=\"fancybox-wrap\" aria-haspopup=\"dialog\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7325\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-8.jpg\" sizes=\"(max-width: 1500px) 100vw, 1500px\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-8.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-8-300x225.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-8-1024x768.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-8-150x113.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-8-768x576.jpg 768w\" alt=\"\" width=\"1500\" height=\"1125\" \/><\/a><\/p>\n<p>The \u2206 Ai Overclock Tuner setting is relevant.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>AIDA64 Cache &amp; Memory Benchmark\u00a0<\/strong>It is mainly used to test the performance of processor caches and RAM. The read\/write\/copy bandwidth performance score represents the rate of transfer between CPU and memory, which means the efficiency of data throughput (the higher the score, the better), and the time delay score of accessing data indicates the responsiveness of the memory system.<\/p>\n<p><a class=\"fancybox image\" href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-2.jpg\" aria-controls=\"fancybox-wrap\" aria-haspopup=\"dialog\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7326\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-2.jpg\" sizes=\"(max-width: 1500px) 100vw, 1500px\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-2.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-2-300x288.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-2-1024x983.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-2-150x144.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-2-768x737.jpg 768w\" alt=\"\" width=\"1500\" height=\"1440\" \/><\/a><\/p>\n<p>\u2206 Use the EXPO I setting.<\/p>\n<p><a class=\"fancybox image\" href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-5.jpg\" aria-controls=\"fancybox-wrap\" aria-haspopup=\"dialog\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7327\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-5.jpg\" sizes=\"(max-width: 1500px) 100vw, 1500px\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-5.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-5-300x288.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-5-1024x983.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-5-150x144.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-5-768x737.jpg 768w\" alt=\"\" width=\"1500\" height=\"1440\" \/><\/a><\/p>\n<p>\u2206 Use the EXPO II setting.<\/p>\n<p><a class=\"fancybox image\" href=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-6.jpg\" aria-controls=\"fancybox-wrap\" aria-haspopup=\"dialog\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7328\" src=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-6.jpg\" sizes=\"(max-width: 1500px) 100vw, 1500px\" srcset=\"https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-6.jpg 1500w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-6-300x288.jpg 300w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-6-1024x983.jpg 1024w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-6-150x144.jpg 150w, https:\/\/pcunboxing.com\/wp-content\/uploads\/ROG-CROSSHAIR-X870E-APEX-6-768x737.jpg 768w\" alt=\"\" width=\"1500\" height=\"1440\" \/><\/a><\/p>\n<p>\u2206 Use the EXPO Tweaked setting.<\/p>","protected":false},"excerpt":{"rendered":"<p>This article is intended to answer common questions about DDR5 memory and will be updated from time to time. How do you check the memory QVL before buying memory to confirm compatibility with your processor and motherboard? Go to the official website for your motherboard model, click \u201cSupport &amp; Downloads,\u201d then select \u201cMemory Support\u201d or \u201cMemory QVL\u201d (Memory Compatibility List). Select the \u201cseries\u201d of the processor you plan to use. For example, for the 9800X3D, select \u201cAMD Ryzen 9000 Series Processors.\u201d Go to the memory brand\u2019s official website to find documentation and locate the memory part number (note that part numbers differ between single and dual-module kits; typically, use the dual-module part number as a reference). Use the search function on the motherboard manufacturer\u2019s official website to copy and paste the part number to verify if it has been QVL-certified. If you can\u2019t find it =&gt; We do not recommend purchasing and using it \/ If you can find it =&gt; Go ahead and buy it. If it\u2019s listed on the QVL but doesn\u2019t work after installation, please contact the customer service teams for both the motherboard and memory brands for assistance. \u2206 Example for Gigabyte motherboards. \u2206 Example for ASRock motherboards. \u2206 Example of checking a memory module\u2019s QVL serial number. \u00a0 Why isn\u2019t the memory running at the rated frequency? Check whether Profile 1 is enabled in the motherboard BIOS. Below are the approximate names of BIOS profile settings for various manufacturers, provided to help you locate and verify the correct setting in your BIOS. GIGABYTE: XMP\/EXPO Profile ASRock: Profile or DRAM Profile Configuration ASRock: XMP or EXPO Profile GIGABYTE: AMD_DOCP \/ Intel_XMP or EXPO   How to check the operating mode of the memory frequency and the IMC memory controller frequency On current DDR5 platforms, the memory controller frequency (Memory Controller Frequency) and memory frequency (Memory Frequency) on Intel platforms operate in Gear 2 mode (i.e., \u00bd:1). For the Z890, when Gear Mode is set to Auto, it typically remains in Gear 2 up to 8,800\u20139,000 MT\/s (this varies by motherboard manufacturer), and above 9,200 MT\/s, it usually switches to Gear 4 (i.e., \u00bc:1). On the AMD AM5 platform, the operating mode is determined by comparing the UCLK (Memory Controller Frequency) to the MCLK (Memory Equivalent Clock Frequency), resulting in either UCLK=MCLK or UCLK=MCLK\/2. In China, this is referred to as \u201cfrequency division,\u201d \u201cdifferent frequencies,\u201d or \u201csame frequencies,\u201d but I\u2019m not going to get caught up in all that jargon\u2014I\u2019ll just stick to the UCLK=MCLK terminology. Taking the X870 as an example, when the UCLK Mode is set to \u201cAuto,\u201d AM5 systems currently typically operate in UCLK=MCLK mode at speeds below 6,000 MT\/s; but at 6200 MT\/s and above, it\u2019s usually UCLK=MCLK\/2. In short, Intel and AMD platforms operate on different principles, so it\u2019s ridiculous to lump them together. Also, the DRAM Frequency shown in CPU-Z needs to be multiplied by 2 to get the actual full memory frequency. So how can you check on an Intel platform whether the system is in Gear 2 or Gear 4? First, use a newer version of CPU-Z, then open the Memory tab and check the ratio between the Mem Controller Freq. and the DRAM Frequency. \u25b3 In Gear 2 mode, the ratio between the Mem Controller Freq. and the DRAM Frequency will be \u00bd:1; multiplying the former (Mem Controller Freq.) by 2 equals the latter (DRAM Frequency), which indicates Gear 2. In this image, for example, 2000 \u00d7 2 = 4000. \u25b3 In Gear 4 mode, the former (Mem Controller Freq.) is equal to four times the DRAM Frequency\u2014that\u2019s Gear 4. In this image, for example, 1316.9 \u00d7 4 \u2248 5267.   How can you check on an AMD platform whether the system is configured as UCLK=MCLK or UCLK=MCLK\/2? First, use a newer version of CPU-Z, then open the Memory tab to check the ratio between the Mem Controller Freq. and the DRAM Frequency. \u25b3 In UCLK=MCLK mode, the Mem Controller Freq. and the DRAM Frequency will be the same; the former (Mem Controller Freq. frequency equals the latter\u2019s DRAM Frequency\u2014that indicates UCLK=MCLK. In this screenshot, for example, 3004.1 = 3004.1 (6000 MT\/s). \u25b3 In UCLK=MCLK\/2 mode, the Mem Controller Freq. and DRAM Frequency will be in a \u00bd:1 ratio; the former (Mem Controller Freq.) multiplied by 2 equals the latter (DRAM Frequency). This is UCLK=MCLK\/2. In the image shown here\u2026<\/p>","protected":false},"author":1,"featured_media":4561,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-5574","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teaching"],"acf":[],"_links":{"self":[{"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/posts\/5574"}],"collection":[{"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/comments?post=5574"}],"version-history":[{"count":0,"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/posts\/5574\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/media\/4561"}],"wp:attachment":[{"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/media?parent=5574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/categories?post=5574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pcunboxing.com\/en\/wp-json\/wp\/v2\/tags?post=5574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}