Brand: Samsung | Category: Memory (RAM)
SKU: SAMS-M321R0GA0PB0CQK | Part #: M321R0GA0PB0-CQK | MPN: M321R0GA0PB0-CQK
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The Samsung DDR5 128GB 4Rx4 LRDIMM represents a breakthrough in server memory density, engineered for next-generation data center architectures requiring unprecedented memory footprints. Built on DDR5 technology with load-reduced DIMM (LRDIMM) architecture, this module consolidates 128GB per slot, enabling single-socket systems to achieve multi-terabyte memory configurations without requiring multi-socket server complexity. The 4Rx4 design (4 ranks, 4 banks per rank) optimizes signal integrity and thermal efficiency across high-density populated memory channels, critical for systems operating at sustained full capacity.
Launched in 2023-Q2, this module targets demanding workloads including in-memory database platforms (SAP HANA, Oracle Database with Exadata), real-time analytics engines, and large-language model inference hosting. The 4800MHz speed grade balances bandwidth delivery with power efficiency, providing 38.4GB/s per-channel throughput while maintaining compatibility with leading Xeon and EPYC processor architectures. Load reduction circuitry minimizes electrical strain on memory controllers, enabling reliable operation in densely-populated memory subsystems spanning 8+ DIMM configurations.
The module's 128GB capacity directly addresses the memory bottleneck for organizations deploying distributed training frameworks, vector databases, and graph analytics platforms where per-server memory locality reduces network fabric utilization. Thermal-optimized design with standard heatspreader reduces hotspot formation in high-density server chassis, supporting continuous operation in virtualized environments where memory overcommit is performance-critical.
| Manufacturer | Samsung |
| Product Line | Server Memory |
| Form Factor | LRDIMM (Load-Reduced Dual In-Line Memory Module) |
| Capacity | 128GB |
| Memory Technology | DDR5 SDRAM |
| Speed Grade | 4800MHz |
| Data Rate | 4800 Mbps |
| Voltage | 1.1V (nominal) |
| CAS Latency | 40 |
| Rank Configuration | 4Rx4 (4 Ranks, 4 Banks per Rank) |
| Module Density | 128Gb (16Gb x 8) |
| ECC | Yes, Full 72-bit ECC |
| Registered | Yes, LRDIMM with load-reduction circuitry |
| Bandwidth Per Channel | 38.4GB/s |
| Thermal Design Power | 15W (nominal) |
| Operating Temperature | 0°C to 85°C |
| Storage Temperature | -40°C to 100°C |
| Module Dimensions | 133mm (L) x 32mm (H) |
| JEDEC Compliance | JEDEC DDR5 SPD (Serial Presence Detect) |
| Processor Compatibility | 3rd Gen Intel Xeon Scalable (Ice Lake), 4th Gen Intel Xeon Scalable (Sapphire Rapids), AMD EPYC 9004 Series |
| Maximum Memory Per Channel | 384GB (8 x 48GB or 3 x 128GB configurations dependent on platform support) |
Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.
| Brand | Samsung |
| Category | Memory (RAM) |
| SKU | SAMS-M321R0GA0PB0CQK |
| Part Number | M321R0GA0PB0-CQK |
| Condition | New |
| Product Line | Server Memory |
| Form Factor | LRDIMM (Load-Reduced Dual In-Line Memory Module) |
| Capacity | 128GB |
| Memory Technology | DDR5 SDRAM |
| Speed Grade | 4800MHz |
| Data Rate | 4800 Mbps |
| Voltage | 1.1V (nominal) |
| CAS Latency | 40 |
| Rank Configuration | 4Rx4 (4 Ranks, 4 Banks per Rank) |
| Module Density | 128Gb (16Gb x 8) |
| ECC | Yes, Full 72-bit ECC |
| Registered | Yes, LRDIMM with load-reduction circuitry |
| Bandwidth Per Channel | 38.4GB/s |
| Thermal Design Power | 15W (nominal) |
| Operating Temperature | 0°C to 85°C |
| Storage Temperature | -40°C to 100°C |
| Module Dimensions | 133mm (L) x 32mm (H) |
| JEDEC Compliance | JEDEC DDR5 SPD (Serial Presence Detect) |
| Processor Compatibility | 3rd Gen Intel Xeon Scalable (Ice Lake), 4th Gen Intel Xeon Scalable (Sapphire Rapids), AMD EPYC 9004 Series |
| Maximum Memory Per Channel | 384GB (8 x 48GB or 3 x 128GB configurations dependent on platform support) |
The Samsung DDR5 128GB 4Rx4 LRDIMM 4800MHz Server Memory is enterprise server memory designed for ECC-protected workloads — virtualization hosts, database servers, analytics platforms, and AI training rigs. Samsung validates this module against major server vendor compatibility matrices.
Key specifications for the Samsung DDR5 128GB 4Rx4 LRDIMM 4800MHz Server Memory: new condition; manufacturer Samsung; product line Server Memory; form factor LRDIMM (Load-Reduced Dual In-Line Memory Module); capacity 128GB; memory technology DDR5 SDRAM; speed grade 4800MHz. Manufacturer part number M321R0GA0PB0-CQK. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.