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M393A4K40CB2-CTD7Y
M393A4K40CB2-CTD7Y is Samsung original registered server memory built for mission-critical enterprise computing. This 288-pin DDR4 RDIMM module provides 32GB capacity with 2666MT/s transfer speed, PC4-21300 specification.
It integrates ECC (Error-Correcting Code) function to automatically detect and repair single-bit memory errors, avoiding unexpected downtime and data corruption for long-running server systems. The RDIMM register chip buffers address and command signals, allowing multi-socket servers to support much larger total memory capacity compared with ordinary UDIMM.
With 2Rx4 dual-rank architecture and 1.2V low power consumption, it reduces heat output and power cost inside dense server racks. Every module passes strict aging and compatibility testing before shipment. It is widely compatible with mainstream brand rack servers and workstations that support DDR4 ECC RDIMM, perfect for heavy enterprise computing tasks.
Item | Specification |
|---|---|
Part Number | M393A4K40CB2-CTD7Y |
Brand | Samsung |
Capacity | 32GB |
Memory Type | DDR4 SDRAM |
Form Factor | RDIMM (Registered DIMM) |
Speed | 2666 MT/s / 2666MHz |
PC Standard | PC4-21300 |
ECC Support | Yes, ECC Error Correction |
Rank | 2Rx4 (Dual Rank x4) |
Pin Count | 288 Pin |
Voltage | 1.2V |
CAS Latency | CL19 |
Timings | 19-19-19 |
Application | Enterprise Server / Workstation |
ECC error correction — auto detect and fix single-bit memory errors, protect data integrity and reduce server downtime.
RDIMM registered design — supports huge memory expansion on multi-socket server platforms.
1.2V low power design — cuts power consumption and heat generation, lower data center operating cost.
Genuine Samsung memory chips — strict burn-in test, stable and long service life.
2666MT/s high bandwidth — accelerate data reading and computing for heavy workload.
2Rx4 dual rank design — great performance when multiple DIMMs installed in one server.
Wide compatibility — compatible with major brand rack servers supporting DDR4 ECC RDIMM.
Enterprise Rack Servers (1U / 2U rack server)
Data Center Storage Servers
Cloud Computing Hosts
Virtualization & VM Cluster Servers
Database Servers (SQL, NoSQL, in-memory database)
High Performance Computing Workstations
Enterprise Virtualization Infrastructure
Q1: Can M393A4K40CB2-CTD7Y work on regular desktop motherboard?
A: No. This is ECC RDIMM server RAM. It only works on server motherboards & CPUs that support ECC RDIMM. Ordinary consumer desktop boards cannot recognize or boot with RDIMM memory.
Q2: What is RDIMM?
A: RDIMM (Registered DIMM) has register chip to buffer control signals. It enables multi-socket servers to install larger total memory capacity, suitable for enterprise data center.
Q3: Can I mix this memory with other DDR4 modules in my server?
A: We recommend to use identical memory modules for best stability. Mixing different rank / type RAM may work but system will run at the slowest speed, and stability risk increases.
Q4: What is the condition of the memory?
A: Fully tested server memory. Please contact us to confirm stock status: new or tested used.
Q5: What is your warranty policy?
A: 3-year warranty. Defective items can be replaced after inspection.
Q6: Does this RAM come with heat sink?
A: No, it is bare PCB server memory without heat spreader, designed for server chassis with good airflow cooling.
