M386A8K40BM2‑CTD6Q Specifications
Samsung 64 GB DDR4 2666 MT/s ECC Load‑Reduced (LR) Registered LRDIMM
Manufacturer: Samsung
Manufacturer Model: M386A8K40BM2‑CTD6Q
Product Line: Samsung DDR4 ECC LRDIMM
Product Series: 64 GB, 2666 MT/s, 1.2 V
Product Type: Load‑Reduced ECC DIMM (LRDIMM)
Product Name: Samsung 64 GB DDR4‑2666 ECC LRDIMM
KEY FEATURES:
Capacity: 64 GB
Memory Type: DDR4 SDRAM
ECC Support: Yes
Form Factor: 288‑pin LRDIMM
Voltage: 1.2 V
Speed: 2666 MT/s (PC4‑21300)
Rank/Organization: 4R × 4 (Quad Rank)
CAS Latency: CL19
PERFORMANCE:
Maximum Data Transfer Rate: ~21.3 GB/s (PC4‑21300)
Latency (CAS): 19 cycles
ENVIRONMENTAL & RELIABILITY:
Designed for enterprise / server environments
Error Correction: ECC (single-bit error correction)
Load‑Reduced Architecture: Reduces electrical load on the memory controller
PHYSICAL:
Form Factor: 288‑pin LRDIMM
Typical Dimensions: 31.25 mm height
NOTES / COMPATIBILITY:
Compatible with systems that support DDR4 2666 ECC LRDIMMs
Quad-rank configuration — check your server’s memory topology/QVL
Uses 8 Gb × 72 organization

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