{"product_id":"micron-128gb-ddr4-3200-lrdimm-mta72ass16g72lz-3g2b3xi","title":"Micron 128GB 3200MHz DDR4 PC4-25600 ECC Registered CL22 288-Pin Load Reduced DIMM 1.2V Quad Rank x4 Memory Module - MTA72ASS16G72LZ-3G2B3XI","description":"\u003cp\u003eThe Micron MTA72ASS16G72LZ-3G2B3 is a 128GB DDR4-3200 LRDIMM for servers. It is quad rank with x4 chips, has 288 pins, and runs at 1.2V. Some listings add letters after B3, such as the XI in MTA72ASS16G72LZ-3G2B3XI. The base part number is the same.\u003c\/p\u003e\n\u003ch2\u003eWhat the part number says\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMTA72:\u003c\/strong\u003e a Micron DDR4 module that is 72 bits wide, which means ECC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASS16G72:\u003c\/strong\u003e a 16 Gig by 72 layout, which gives 128GB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eL and Z:\u003c\/strong\u003e load reduced, and lead-free\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3G2:\u003c\/strong\u003e DDR4-3200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB:\u003c\/strong\u003e die revision B\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpeed grades in the family\u003c\/h2\u003e\n\u003cp\u003eMicron's data sheet covers two speed grades for the 128GB module. This one is the first row.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003ePart prefix\u003c\/th\u003e\n\u003cth\u003eData rate\u003c\/th\u003e\n\u003cth\u003eBandwidth\u003c\/th\u003e\n\u003cth\u003eTiming\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMTA72ASS16G72LZ-3G2\u003c\/th\u003e\n\u003ctd\u003e3200 MT\/s\u003c\/td\u003e\n\u003ctd\u003e25.6 GB\/s\u003c\/td\u003e\n\u003ctd\u003e22-22-22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMTA72ASS16G72LZ-2G9\u003c\/th\u003e\n\u003ctd\u003e2933 MT\/s\u003c\/td\u003e\n\u003ctd\u003e23.47 GB\/s\u003c\/td\u003e\n\u003ctd\u003e21-21-21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOn a server that tops out at 2933 or 2666, the 3200 module runs at the server's speed, so the extra speed goes unused. Check the CPU's memory limit first.\u003c\/p\u003e\n\u003ch2\u003eHow it is built\u003c\/h2\u003e\n\u003cp\u003eMicron builds the module with 32Gb TwinDie DRAM, which packs two dies into one package. That is how 128GB fits on a single stick. An LRDIMM also carries data buffer chips, so a server can hold more memory per channel.\u003c\/p\u003e\n\u003cp\u003eThe module needs a server that accepts DDR4 LRDIMMs. It can't share a server with plain RDIMMs, and a desktop PC can't use it. Eight modules give 1TB of memory. Sixteen give 2TB.\u003c\/p\u003e\n\u003ch2\u003eQuick answers\u003c\/h2\u003e\n\u003ch3\u003eIs it an RDIMM or an LRDIMM?\u003c\/h3\u003e\n\u003cp\u003eIt is an LRDIMM. The L in the part number marks load reduced.\u003c\/p\u003e\n\u003ch3\u003eWhat is TwinDie?\u003c\/h3\u003e\n\u003cp\u003eIt is Micron's name for a package with two DRAM dies inside. It helps pack 128GB onto one module while keeping the 1.2V supply.\u003c\/p\u003e\n\u003ch3\u003eWhich CPU limit matters?\u003c\/h3\u003e\n\u003cp\u003eLook up your processor's top memory speed and its support for LRDIMMs. The server runs the module at the lower of that speed and 3200 MT\/s.\u003c\/p\u003e\n\u003ch2\u003eMTA72ASS16G72LZ-3G2B3 specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMicron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eMTA72ASS16G72LZ-3G2B3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eListing suffix\u003c\/th\u003e\n\u003ctd\u003eXI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e128GB (16 Gig x 72)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eType\u003c\/th\u003e\n\u003ctd\u003eDDR4 LRDIMM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSpeed\u003c\/th\u003e\n\u003ctd\u003eDDR4-3200 (PC4-25600)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBandwidth\u003c\/th\u003e\n\u003ctd\u003e25.6 GB\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTiming\u003c\/th\u003e\n\u003ctd\u003eCL22 (22-22-22)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRank\u003c\/th\u003e\n\u003ctd\u003e4Rx4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDRAM\u003c\/th\u003e\n\u003ctd\u003e32Gb TwinDie\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eError check\u003c\/th\u003e\n\u003ctd\u003eECC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e1.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePins\u003c\/th\u003e\n\u003ctd\u003e288\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Micron","offers":[{"title":"Default Title","offer_id":62810655949171,"sku":"MTA72ASS16G72LZ-3G2B3XI","price":1056.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/9546\/1747\/files\/dm_mta72ass16g72lz-3g2b3xi_4.jpg?v=1778010516","url":"https:\/\/cpurepublic.com\/products\/micron-128gb-ddr4-3200-lrdimm-mta72ass16g72lz-3g2b3xi","provider":"CPU Republic LLC","version":"1.0","type":"link"}