{"product_id":"hpe-128gb-16x8gb-ddr4-2133-rdimm-kit-726718-128","title":"HPE 128GB (16 x 8GB) 2133MHz DDR4 PC4-17000 ECC Registered CL15 288-Pin DIMM 1.2V Single Rank x4 Memory Kit - 726718-128","description":"\u003cp\u003eThe 726718-128 is a set of sixteen HPE 8GB DDR4-2133 RDIMMs that add up to 128GB. Each module matches HPE option part 726718-B21: single rank x4, CAS 15-15-15, registered. They are made for ProLiant Gen9 servers.\u003c\/p\u003e\n\u003ch2\u003eTwo ways to reach 128GB\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSet\u003c\/th\u003e\n\u003cth\u003eModules\u003c\/th\u003e\n\u003cth\u003eSlots used\u003c\/th\u003e\n\u003cth\u003eChannels used (two CPUs)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e16 x 8GB (this set)\u003c\/th\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e8 of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e4 x 32GB\u003c\/th\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4 of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eA Gen9 processor has four memory channels, so a two-CPU server has eight. Sixteen modules put two on every channel, so every channel carries data. Four big modules cover only half the channels.\u003c\/p\u003e\n\u003cp\u003eThe trade is slots. Sixteen modules take sixteen of a DL380 Gen9's 24 slots and leave eight open. Four modules take four slots and leave twenty. Pick by what you need more: bandwidth now, or room to grow.\u003c\/p\u003e\n\u003ch2\u003eSingle rank, in plain words\u003c\/h2\u003e\n\u003cp\u003eEach module has one rank of x4 memory chips built from 4Gb parts. One rank is a light load on the memory controller. That helps a server hold its top speed when many slots are full. The modules run at 2133 MT\/s, which is 17 GB\/s each.\u003c\/p\u003e\n\u003ch2\u003eWhat to match\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType.\u003c\/strong\u003e These are RDIMMs. They can't share a server with load-reduced modules such as the HPE 805353-B21.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed.\u003c\/strong\u003e Mixed speeds fall to the slowest module. Xeon E5 v4 servers can run 2400 memory, but this set stays at 2133.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServer.\u003c\/strong\u003e Parts sellers list the 726718-B21 for the DL360, DL380, DL180, DL160, DL80, and ML350 Gen9 and the BL460c Gen9 blade. Check HPE's list for your model.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAdding more later\u003c\/h2\u003e\n\u003cp\u003eEight more modules of the same type bring a DL380 Gen9 to 192GB. Keep the channels even as you add them.\u003c\/p\u003e\n\u003ch2\u003eIs 726718-128 an HPE number?\u003c\/h2\u003e\n\u003cp\u003eHPE's own option number for one module is 726718-B21. The 726718-128 number names a set of sixteen of them. HPE's spare number for each module is 774170-001.\u003c\/p\u003e\n\u003ch2\u003e726718-128 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\u003e726718-128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModule option part\u003c\/th\u003e\n\u003ctd\u003e726718-B21 (sixteen 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\u003e774170-001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTotal capacity\u003c\/th\u003e\n\u003ctd\u003e128GB (16 x 8GB)\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\u003eSingle 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":62811033043315,"sku":"726718-128","price":1185.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/9546\/1747\/files\/726718-128.jpg?v=1778021996","url":"https:\/\/cpurepublic.com\/products\/hpe-128gb-16x8gb-ddr4-2133-rdimm-kit-726718-128","provider":"CPU Republic LLC","version":"1.0","type":"link"}