Samsung 16GB 1Rx4 DDR4-2666 ECC RDIMM Server RAM (M393A2K40BB2-CTD) - Used

Samsung 16GB DDR4-2666 ECC Registered RDIMM Server Memory (M393A2K40BB2-CTD) — Server Pull, Bench Tested

Genuine Samsung M393A2K40BB2-CTD 16GB DDR4-2666 ECC Registered DIMM. Single-rank module — useful for high-density configurations where 1Rx4 is preferred over 2Rx4 for max DIMM-per-channel population. Server pull from production datacenter infrastructure. Each module is bench-tested for POST, ECC functionality, and SPD identification before listing.

DRAM supply context: AI-driven demand has elevated DDR4 server memory pricing through 2026 and is forecast to remain tight through 2027. Tested server-pull modules at this spec deliver enterprise-grade capacity at retail-tier pricing well below the new-module retail floor.

What We Test on Every Module

• POST / boot test — module identifies and trains at rated 2666 MT/s
• ECC functionality — Error Correcting Code validated
• SPD verification — module reports correct capacity, rank, and timing to host BIOS
• Production provenance — pulled from a working server fleet

Specifications

• Brand: Samsung (Genuine OEM)
• Part Number (MPN): M393A2K40BB2-CTD
• Capacity: 16GB per module
• Type: DDR4 SDRAM
• Speed: DDR4-2666 (PC4-21300)
• Form Factor: 288-pin RDIMM (Registered DIMM)
• Rank / Configuration: 1Rx4 (Single Rank)
• Voltage: 1.2V
• CAS Latency: CL19
• ECC: Yes — Error Correcting Code
• Condition: Used / Server Pull

Server Compatibility

Compatible with Intel Xeon Scalable 1st Gen (Skylake-SP) and 2nd Gen (Cascade Lake) platforms:

• Dell PowerEdge: R640, R740, R740xd, R840, R940, T440, T640
• HPE ProLiant: DL360 Gen10, DL380 Gen10, DL560 Gen10, DL580 Gen10, ML350 Gen10
• Supermicro: X11 platforms
• Lenovo ThinkSystem: SR530, SR550, SR570, SR630, SR650, SR850, SR860
• Cisco UCS B-series and C-series Gen3/Gen4 platforms

Single-rank advantage: 1Rx4 modules allow higher max DIMM count per channel on platforms that limit dual-rank populations.

Why Nuvoxel

• Tested & verified — POST and ECC validation prior to listing.
• Server-pull provenance — pulled from production datacenter fleet.
• Same-business-day shipping — In stock and shipping from the US.
• Honest condition reporting — "Used" means used.

Important Notes

ECC RDIMM only — not for desktop systems. Requires a server or workstation motherboard with Registered ECC support. Will NOT work in standard desktop DDR4 slots.

Condition

Used — server pull. Tested functional, POST and ECC verified. Normal handling marks may be present on the PCB and labels. No retail packaging or accessories included.