{"product_id":"hpe-128gb-4x32gb-ddr4-2133-rdimm-kit-728629-128","title":"HPE 128GB (4 x 32GB) 2133MHz DDR4 PC4-17000 ECC Registered CL15 288-Pin DIMM 1.2V Dual Rank x4 Memory Kit - 728629-128","description":"\u003cp\u003eThe 728629-128 is a set of four HPE 32GB DDR4-2133 RDIMMs that add up to 128GB. Each module matches HPE option part 728629-B21: dual rank x4, CAS 15-15-15, registered. They are made for ProLiant Gen9 servers.\u003c\/p\u003e\n\u003ch2\u003eFour modules, four channels\u003c\/h2\u003e\n\u003cp\u003eA ProLiant Gen9 processor has four memory channels. Four modules fill them evenly, one per channel, which gives the best speed from the set. In a two-socket server, a second set fills the other CPU.\u003c\/p\u003e\n\u003ch2\u003eHow far it scales\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eServer slots\u003c\/th\u003e\n\u003cth\u003e32GB modules\u003c\/th\u003e\n\u003cth\u003eMemory\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e8\u003c\/th\u003e\n\u003ctd\u003e8 (two sets)\u003c\/td\u003e\n\u003ctd\u003e256GB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e16\u003c\/th\u003e\n\u003ctd\u003e16 (four sets)\u003c\/td\u003e\n\u003ctd\u003e512GB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e24\u003c\/th\u003e\n\u003ctd\u003e24 (six sets)\u003c\/td\u003e\n\u003ctd\u003e768GB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eA 24-slot server such as the DL380 Gen9 reaches 768GB with six sets.\u003c\/p\u003e\n\u003ch2\u003e2133 or 2400?\u003c\/h2\u003e\n\u003cp\u003eThese modules run at 2133 MT\/s, which is 17 GB\/s each. Gen9 servers with newer Xeon E5 v4 processors can also run 2400 memory, such as the HPE 805351-B21. A mixed set runs at the slowest speed, so keep the speeds matched.\u003c\/p\u003e\n\u003ch2\u003eRDIMM, not LRDIMM\u003c\/h2\u003e\n\u003cp\u003eThese are registered modules. They have a register chip but no data buffers. Don't mix them with load-reduced modules such as the HPE 805353-B21. A server holds one type or the other.\u003c\/p\u003e\n\u003ch2\u003eGen9 servers that take it\u003c\/h2\u003e\n\u003cp\u003eParts sellers list the 728629-B21 for the ProLiant DL360, DL380, DL180, DL160, and ML350 Gen9, the BL460c Gen9 blade, and many Apollo nodes. Check HPE's list for your exact model.\u003c\/p\u003e\n\u003ch2\u003eReading the HPE name\u003c\/h2\u003e\n\u003cp\u003eHPE calls the single module \"32GB (1x32GB) Dual Rank x4 DDR4-2133 CAS-15-15-15 Registered Memory Kit\". The spare number for each module is 774175-001.\u003c\/p\u003e\n\u003ch2\u003eIs 728629-128 an HPE number?\u003c\/h2\u003e\n\u003cp\u003eHPE's own option number for one module is 728629-B21. The 728629-128 number names a set of four of them. Search either one and you find the same modules.\u003c\/p\u003e\n\u003ch2\u003eQuick answers\u003c\/h2\u003e\n\u003ch3\u003eCan these go in a Gen10 server?\u003c\/h3\u003e\n\u003cp\u003eA few Gen10 models appear on sellers' lists, but most Gen10 servers use faster memory. Check HPE's list for your model before you plan around 2133 MT\/s modules.\u003c\/p\u003e\n\u003ch3\u003eDo they work in a desktop?\u003c\/h3\u003e\n\u003cp\u003eNo. Registered ECC modules need a server board.\u003c\/p\u003e\n\u003ch2\u003e728629-128 specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSet part number\u003c\/th\u003e\n\u003ctd\u003e728629-128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModule option part\u003c\/th\u003e\n\u003ctd\u003e728629-B21 (four of them)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSpare part per module\u003c\/th\u003e\n\u003ctd\u003e774175-001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal capacity\u003c\/th\u003e\n\u003ctd\u003e128GB (4 x 32GB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eType\u003c\/th\u003e\n\u003ctd\u003eDDR4 RDIMM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSpeed\u003c\/th\u003e\n\u003ctd\u003e2133 MT\/s (PC4-17000)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRank\u003c\/th\u003e\n\u003ctd\u003eDual rank x4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCAS latency\u003c\/th\u003e\n\u003ctd\u003e15-15-15\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\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFits\u003c\/th\u003e\n\u003ctd\u003eProLiant Gen9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HP","offers":[{"title":"Default Title","offer_id":62811029668211,"sku":"728629-128","price":1088.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/9546\/1747\/files\/728629-128.jpg?v=1778021864","url":"https:\/\/cpurepublic.com\/products\/hpe-128gb-4x32gb-ddr4-2133-rdimm-kit-728629-128","provider":"CPU Republic LLC","version":"1.0","type":"link"}