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Samsung M386A8K40BM2-CTD7Y / SK Hynix HMAA8GL7CPR4N-VK
You are buying twelve (12) 64GB modules, for 768GB total:
All 12 modules have identical specs: 64GB, 4DRx4, PC4-2666V, LRDIMM. Twelve modules is one DIMM per channel on a dual-socket Xeon Scalable server (6 channels per CPU), which is the balanced, full-bandwidth layout for platforms like the Dell R640/R740.
Specifications Capacity12 x 64GB = 768GB TypeDDR4 ECC Load Reduced DIMM (LRDIMM) SpeedPC4-2666V / DDR4-2666 / PC4-21300 Rank4DRx4 (Quad Rank, x4) Voltage1.2V Pins288 Interchangeable Part NumbersM386A8K40BM2-CTD, M386A8K40BM2-CTD6Q, M386A8K40BM2-CTD6Y, M386A8K40BM2-CTD7Q, M386A8K40CM2-CTD, M386A8K40CM2-CTD7Y, HMAA8GL7CPR4N-VK, Dell 04JMGM / SNP4JMGMC/64G, HPE 840759-091 / 815101-B21, Lenovo 7X77A01305
Common Compatible SystemsServers and workstations that support DDR4 LRDIMMs, such as Dell PowerEdge 14th Gen (R640, R740, R740xd), HPE ProLiant Gen10 (DL360, DL380), Lenovo ThinkSystem SR650, and Supermicro X11 boards. Many older platforms like Dell 13th Gen and HPE Gen9 also accept these, running at the platform\'s maximum speed.
ConditionUsed, pulled from working enterprise servers. Each module has been tested and passed.
ShippingShips within 1 business day in anti-static bags and a padded box, fully insured, with signature confirmation. Free shipping.

Documentation