Kingston Server Premier DDR5-6400 48GB ECC RDIMM

Kingston Server Premier DDR5-6400 48GB ECC RDIMM

Brand: Kingston | Category: Memory (RAM)

SKU: KING-KSM64R52BS4PMI48HMI | Part #: KSM64R52BS4PMI-48HMI | MPN: KSM64R52BS4PMI-48HMI

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About the Kingston Server Premier DDR5-6400 48GB ECC RDIMM

The Kingston Server Premier DDR5-6400 48GB ECC RDIMM represents the leading edge of DDR5 server memory, operating at 6400 MT/s to provide substantially higher bandwidth than baseline DDR5-4800 modules. Built on the JEDEC DDR5 RDIMM standard, this 48GB capacity point utilizes a 3DS (Three-Die Stacking) or high-density monolithic die architecture to achieve a previously uncommon per-DIMM density that fits neatly between traditional 32GB and 64GB options, enabling memory configurations optimized for AI model loading, large in-memory datasets, and numerically intensive HPC workloads without unnecessary over-provisioning. On-die ECC combined with the registered buffer architecture ensures data integrity across sustained high-throughput operations, a critical requirement for production AI infrastructure and financial modeling environments.

Designed for the latest Intel Xeon Scalable (Granite Rapids and beyond) and AMD EPYC (Genoa, Bergamo, Turin) server platforms, this RDIMM is validated against Kingston's rigorous Server Premier compatibility matrix, which encompasses leading platforms from HPE, Dell, Lenovo, Supermicro, and others. The registered (buffered) command and address bus reduces electrical load on the memory controller, permitting multi-DIMM-per-channel configurations essential for maximum aggregate memory capacity in dense rack deployments. Operating voltage of 1.1V adheres to DDR5 power efficiency standards, helping data centers manage thermal and power budgets even as per-slot bandwidth climbs.

The 6400 MT/s data rate is particularly impactful for workloads with large working sets and high memory-bandwidth-to-compute ratios, such as large language model (LLM) inference serving, genomics pipelines, computational fluid dynamics, and real-time analytics. Kingston's Server Premier line undergoes factory testing at speed with full ECC functionality enabled, and modules ship programmed with accurate SPD data and XMP/EXPO profiles where applicable to facilitate straightforward deployment. The 48GB capacity allows system architects to populate four-channel or eight-channel platforms with balanced, dense configurations that maximize both capacity and bandwidth simultaneously.

Ideal for

  • Large Language Model (LLM) inference servers requiring high per-socket memory bandwidth to feed GPU or accelerator pipelines with minimal latency bottlenecks
  • High-Performance Computing (HPC) clusters running computational fluid dynamics, molecular dynamics, or weather simulation workloads with large in-memory datasets
  • In-memory databases and real-time analytics platforms such as SAP HANA or Redis Enterprise, where aggregate DRAM capacity and throughput directly determine query performance
  • Virtualization hosts running dense VM populations on VMware vSphere or Microsoft Hyper-V, where 48GB per slot enables high vCPU-to-RAM ratios without sacrificing ECC reliability
  • AI training preprocessing nodes and data ingestion servers that stage large batches of training data for GPU clusters, benefiting from high-bandwidth DRAM to avoid storage-layer bottlenecks
  • Financial services risk calculation and Monte Carlo simulation servers that require both the error correction of ECC and the raw bandwidth of 6400 MT/s for time-sensitive compute cycles

Technical specifications

ManufacturerKingston
Product LineServer Premier
ModelKSM64R46BS4-48HA (representative SKU)
Form Factor288-pin RDIMM (Registered DIMM)
Capacity48GB
DDR GenerationDDR5
Speed GradeDDR5-6400
Data Transfer Rate6400 MT/s
Memory Bandwidth (theoretical)~51.2 GB/s per module
CAS LatencyCL46 (46-47-47 at 6400 MT/s)
Voltage1.1V
Error CorrectionECC (Error Correcting Code) with On-Die ECC (ODECC)
Buffer TypeRegistered (RCD) — RDIMM
Ranks x Width2Rx8
Die ConfigurationHigh-Density DDR5 SDRAM
SPD Programmed Speed6400 MT/s
ECC TypeFull ECC (x72 bus width)
Operating Temperature0°C to 85°C (standard); STEC extended available
PCB Layers10-layer high-frequency PCB
Platform CompatibilityIntel Xeon Scalable (Granite Rapids / Sapphire Rapids HBM); AMD EPYC 9004/9005 (Genoa/Bergamo/Turin)
ValidationHPE ProLiant, Dell PowerEdge, Lenovo ThinkSystem, Supermicro; per Kingston compatibility matrix
ComplianceJEDEC DDR5 RDIMM standard; RoHS compliant
Product Dimensions133.35mm x 31.25mm (standard RDIMM)

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Technical Specifications

BrandKingston
CategoryMemory (RAM)
SKUKING-KSM64R52BS4PMI48HMI
Part NumberKSM64R52BS4PMI-48HMI
ConditionNew
Product LineServer Premier
ModelKSM64R46BS4-48HA (representative SKU)
Form Factor288-pin RDIMM (Registered DIMM)
Capacity48GB
DDR GenerationDDR5
Speed GradeDDR5-6400
Data Transfer Rate6400 MT/s
Memory Bandwidth (theoretical)~51.2 GB/s per module
CAS LatencyCL46 (46-47-47 at 6400 MT/s)
Voltage1.1V
Error CorrectionECC (Error Correcting Code) with On-Die ECC (ODECC)
Buffer TypeRegistered (RCD) — RDIMM
Ranks x Width2Rx8
Die ConfigurationHigh-Density DDR5 SDRAM
SPD Programmed Speed6400 MT/s
ECC TypeFull ECC (x72 bus width)
Operating Temperature0°C to 85°C (standard); STEC extended available
PCB Layers10-layer high-frequency PCB
Platform CompatibilityIntel Xeon Scalable (Granite Rapids / Sapphire Rapids HBM); AMD EPYC 9004/9005 (Genoa/Bergamo/Turin)
OEM ValidationHPE ProLiant, Dell PowerEdge, Lenovo ThinkSystem, Supermicro; per Kingston compatibility matrix
ComplianceJEDEC DDR5 RDIMM standard; RoHS compliant
Product Dimensions133.35mm x 31.25mm (standard RDIMM)

Frequently Asked Questions about Kingston Server Premier DDR5-6400 48GB ECC RDIMM

What does the Kingston Server Premier DDR5-6400 48GB ECC RDIMM do?

The Kingston Server Premier DDR5-6400 48GB ECC RDIMM is enterprise server memory designed for ECC-protected workloads — virtualization hosts, database servers, analytics platforms, and AI training rigs. Kingston validates this module against major server vendor compatibility matrices.

What does the Kingston Server Premier DDR5-6400 48GB ECC RDIMM do?

The Kingston Server Premier DDR5-6400 48GB ECC RDIMM is enterprise server memory designed for ECC-protected workloads — virtualization hosts, database servers, analytics platforms, and AI training rigs. Kingston validates this module against major server vendor compatibility matrices.

What does the Kingston Server Premier DDR5-6400 48GB ECC RDIMM do?

The Kingston Server Premier DDR5-6400 48GB ECC RDIMM is enterprise server memory designed for ECC-protected workloads — virtualization hosts, database servers, analytics platforms, and AI training rigs. Kingston validates this module against major server vendor compatibility matrices.

What are the headline specs of the Kingston Server Premier DDR5-6400 48GB ECC RDIMM?

Key specifications for the Kingston Server Premier DDR5-6400 48GB ECC RDIMM: new condition; manufacturer Kingston; product line Server Premier; model KSM64R46BS4-48HA (representative SKU); form factor 288-pin RDIMM (Registered DIMM); capacity 48GB; ddr generation DDR5. Manufacturer part number KSM64R52BS4PMI-48HMI. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.

What are the headline specs of the Kingston Server Premier DDR5-6400 48GB ECC RDIMM?

Key specifications for the Kingston Server Premier DDR5-6400 48GB ECC RDIMM: new condition; manufacturer Kingston; product line Server Premier; model KSM64R46BS4-48HA (representative SKU); form factor 288-pin RDIMM (Registered DIMM); capacity 48GB; ddr generation DDR5. Manufacturer part number KSM64R52BS4PMI-48HMI. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.