Specifications
Module Type
DDR5 ECC Registered DIMM (RDIMM)
Part Number
M321R4GA3BB6-CQK
Capacity
32 GB
Speed
DDR5-4800 MT/s (PC5-38400R)
Rank & Organisation
2Rx8
Data Width
72-bit ECC
Pins
288-pin
Voltage
1.1 V (VDD/VDDQ/VPP)
CAS Latency
CL40
Timing
40-39-39
Register
On-DIMM RCD + on-die ECC
Module Height
Standard (31.25 mm)
Operating Temperature
0 °C to +95 °C (TC)
Compatibility
2-socket and 4-socket DDR5 servers / AI workstations
Overview
The Samsung M321R4GA3BB6-CQK is a 32 GB DDR5 ECC Registered DIMM running at DDR5-4800 MT/s (PC5-38400R) in a 2Rx8 organisation. RDIMMs place a register clock driver between the memory controller and the DRAM devices, which stabilises command and address signalling and allows far higher module counts per channel than unbuffered DIMMs — the reason every DDR5 server and AI host platform uses registered memory.
DDR5 itself adds two 32-bit sub-channels per module, on-die ECC on top of the link-level ECC of the RDIMM, and a 1.1 V rail with on-module power management (PMIC), which together cut energy per transferred bit substantially versus DDR4-3200. This module runs CL40 at 4800 MT/s.
QS Compute supplies Samsung M321R4GA3BB6-CQK modules as factory-sealed OEM stock with volume pricing and matched sets, qualified against the major AI server and workstation platforms.
Key Benefits
32 GB DDR5-4800 ECC RDIMM in a 2Rx8 organisation · 288-pin · CL40 at 1.1 V · on-die ECC plus link ECC · PMIC on module · ideal for populating 12-channel SP5 and 8/12-channel server platforms.
Applications
AI training and inference hosts, virtualisation and hyper-converged clusters, in-memory databases, EDA and CFD workstations, and general-purpose DDR5 server deployments.
Request a Quote — SAMSUNG M321R4GA3BB6-CQK — 32 GB DDR5-4800 ECC RDIMM (2RX8)
QS Compute — global B2B supply of AI computing hardware, edge AI systems and accelerators. Volume pricing, 15-day sample lead time.
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