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Samsung 64GB DDR4-2666 (PC4-21300) ECC Registered DIMM (RDIMM) server memory, Cisco branded.
These are high-capacity enterprise modules for servers and workstations that support DDR4 RDIMMs. They will not work in standard desktop PCs or laptops.
Specifications
• Brand: Samsung (Cisco OEM)
• Capacity: 64GB per module
• Type: DDR4 ECC RDIMM, 288-pin
• Speed: DDR4-2666 / PC4-21300 (2666V)
• Rank: 2S2Rx4 (dual rank, 3DS stacked)
• Samsung part number: M393A8K40B22-CWD6Y
• Cisco PID: UCS-MR-X64G4RS-H
• Cisco part number: Cisco UCS servers that support 64GB DDR4-2666 RDIMMs
• Other servers that support DDR4 ECC RDIMMs. Check your system’s memory guide before buying.
• Do not mix with LRDIMMs in the same system.
Condition
• Fresh pull from working systems
• Used, with normal handling marks
• Labels are intact
Quantity: 4 available, priced per module
What’s included: The memory module(s) only. No heatsinks, trays, or packaging.
Ships within two business days after payment.
Sold as is. No returns.

Samsung 64GB PC4-2666V-R 2S2Rx4 DDR4 ECC REG RDIMM - M393A8K40B22-CWD6Y
$270.00
SAMSUNG 64GB DDR3 1600 Server RDIMM RAM 8Rx4 PC3-12800L M386B8G70DE0-CK0 1.5v
$70.20
SAMSUNG 64GB DDR3 1333 Server LRDIMM RAM 8Rx4 PC3L-10600L M386B8G70DE0-YH93 240p
$64.80
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Documentation