Kingston Server Premier DDR5-4800 64GB RDIMM ECC Registered CL40 2Rx4 KSM4R5280D-64MD

Brand: Kingston | Category: Memory (RAM)

SKU: KSM4R5280D-64MD | Part #: KSM4R5280D-64MD | MPN: KSM4R5280D-64MD

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Product Overview

The Kingston Server Premier DDR5-4800 64GB RDIMM (KSM4R5280D-64MD) is a high-density, registered ECC memory module purpose-built for enterprise server platforms that demand uncompromising reliability, throughput, and scalability. Operating at 4800 MT/s under the DDR5 standard, this module represents a generational leap over DDR4 in both raw bandwidth and power efficiency, making it the go-to choice for data centres, cloud service providers, hyperscalers, and enterprise IT teams managing demanding computational workloads.

Kingston Technology, a globally trusted leader in server memory for over three decades, engineers the KSM4R5280D-64MD to meet or exceed JEDEC standards while passing rigorous validation against major server OEM platforms. Every module is 100% tested at Kingston's own facilities, ensuring that each unit shipped carries the consistency and quality assurance enterprise customers require. With DDR5 rapidly becoming the standard memory interface for the latest-generation Intel Xeon Scalable (Sapphire Rapids and beyond) and AMD EPYC (Genoa) processors, deploying the KSM4R5280D-64MD positions your infrastructure at the forefront of modern compute architecture.

Key Features & Benefits

• High-Speed DDR5-4800 Operation: Runs at 4800 MT/s (PC5-38400), delivering up to 38.4 GB/s of theoretical peak bandwidth per module — nearly double the bandwidth of equivalent DDR4-2400 capacity points, accelerating memory-intensive workloads such as in-memory databases and real-time analytics.
• 64GB High-Density Capacity: A single 64GB RDIMM allows administrators to build massive memory pools within standard DIMM slot budgets. A fully populated dual-socket server with 32 DIMM slots can reach 2TB of total system RAM, supporting large VM farms, in-memory OLAP databases, and AI inference engines without requiring blade or scale-out expansion.
• On-Die ECC (ODECC) + RDIMM ECC: DDR5 introduces on-die ECC within each DRAM die itself, correcting single-bit errors before data even leaves the DRAM chip. Combined with the traditional RDIMM ECC layer at the system level, the KSM4R5280D-64MD provides two independent layers of error correction — critical for uptime in 24/7 production environments.
• Registered (Buffered) Architecture: The on-module register buffer (RCD) isolates the memory controller from the DRAM bus, allowing higher DIMM counts per channel and improving signal integrity at speed, directly enabling larger and more stable memory configurations in multi-processor server builds.
• Dual-Rank x4 Organisation: The 2Rx4 topology balances density and signal reliability. Two independently addressable ranks allow the memory controller to pipeline commands across ranks, improving effective bandwidth utilisation and reducing latency stalls during sustained sequential and random access patterns.
• Improved Power Efficiency: DDR5 operates at 1.1V compared to DDR4's 1.2V, reducing per-module power draw. Across a fully populated enterprise server, this translates into measurable reductions in power consumption and thermal output — directly lowering operational costs and improving data centre PUE metrics.
• Integrated Voltage Regulation (PMIC): DDR5 moves the voltage regulator onto the DIMM itself via a Power Management IC (PMIC), offloading voltage regulation from the motherboard, improving power delivery precision, and reducing motherboard design complexity.
• Kingston 100% Testing Guarantee: Every KSM4R5280D-64MD module undergoes full electrical, functional, and thermal testing at Kingston facilities before shipment, ensuring OEM-equivalent quality and long-term field reliability.

Technical Architecture

The KSM4R5280D-64MD is constructed on a standard 288-pin DDR5 RDIMM form factor (1.2-inch height, standard JEDEC dimensions). The module is populated with Micron D8BZZ (or equivalent-grade) DDR5 DRAM dies organised in a dual-rank, x4 bus-width configuration. The x4 organisation means each DRAM chip contributes 4 bits to the data bus, and with ECC bits included, the module's total data path provides full chipkill-level error correction when deployed on platforms that support advanced RAS features.

The registered clock driver (RCD) on the module buffers the command, address, and control signals from the host memory controller. This buffering is what distinguishes RDIMMs from unbuffered UDIMMs and is mandatory for multi-slot server platforms. The RCD conforms to the JEDEC DDR5 RCD02 specification, ensuring forward compatibility with current and near-future server chipsets.

DDR5's architectural shift to a dual 32-bit sub-channel design (versus DDR4's single 64-bit channel) allows each DIMM to behave as two independent 40-bit (32-bit data + 8-bit ECC) sub-channels. This improves granularity of memory access, reduces row-hit sensitivity, and increases effective bandwidth for workloads with mixed access patterns — a significant advantage for virtualised environments and microservice-based application stacks.

The integrated PMIC manages the conversion of the 12V server backplane power to the 1.1V core voltage and other required rail voltages directly on the DIMM, reducing noise and improving voltage regulation accuracy compared to motherboard-side regulators used in DDR4 systems.

Performance & Capacity

At 4800 MT/s, each KSM4R5280D-64MD module delivers a theoretical peak bandwidth of approximately 38.4 GB/s. In dual-channel configurations (two DIMMs per channel in a dual-socket server), total memory bandwidth per processor can reach over 300 GB/s depending on the platform's memory controller implementation. This level of bandwidth is transformative for workloads such as large language model (LLM) inference, real-time fraud detection systems, high-frequency trading (HFT) analytics, and in-memory NoSQL databases.

With a CAS latency of 40 (CL40) at 4800 MT/s, the true latency (in nanoseconds) is competitive with DDR4-3200 CL22 — meaning absolute memory latency is not sacrificed for the bandwidth gains. For latency-sensitive enterprise applications including financial clearing systems and real-time telemetry platforms, this balance is critical.

A single server platform with eight DIMM slots populated with KSM4R5280D-64MD modules achieves 512GB of total RAM, while a 16-slot single-socket workstation or server reaches 1TB. Dual-socket platforms with 32 slots can be built out to a full 2TB memory pool — sufficient to hold entire relational databases or AI model weights entirely in RAM for ultra-low-latency access.

Compatibility & Integration

The KSM4R5280D-64MD is designed and validated for compatibility with the latest enterprise server platforms, including but not limited to:

• Intel Xeon Scalable (4th Gen — Sapphire Rapids): Fully native DDR5-4800 support on Intel Eagle Stream (LGA4677) platforms, including Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650 V3, and Supermicro X13 series.
• AMD EPYC 9004 Series (Genoa): Native DDR5-4800 support across SP5-socket platforms including HPE ProLiant DL385 Gen11, Dell PowerEdge R7625, and Supermicro H13 series.
• JEDEC DDR5 Standard Compliance: Full adherence to JEDEC JESD79-5 DDR5 specification ensures interoperability with any DDR5-compliant server platform.
• Operating Systems: Compatible with VMware vSphere/ESXi 8.x, Red Hat Enterprise Linux 8/9, Ubuntu Server 22.04/24.04 LTS, Windows Server 2022/2025, and all major hypervisor and container orchestration platforms.
• RAS Feature Support: Supports advanced server RAS features including memory mirroring, memory sparing, patrol scrub, and demand scrub when used on qualifying server platforms.

Ideal Use Cases

• Artificial Intelligence & Machine Learning Training: Large DDR5 memory pools reduce PCIe/NVLink data transfer bottlenecks when feeding GPU clusters, and support pre-processing, data loading, and embedding table operations for transformer-based models entirely in DRAM.
• Virtualisation & VDI Infrastructure: High-density 64GB RDIMMs allow IT teams to maximise VM density per host, reducing the total number of physical servers required and cutting licensing, power, and rack costs across large VMware, Hyper-V, or KVM deployments.
• In-Memory OLAP & Real-Time Analytics: Platforms such as SAP HANA, Oracle TimesTen, and ClickHouse benefit directly from expanded DRAM pools, enabling entire analytical datasets to reside in memory for sub-millisecond query response times.
• High-Performance Computing (HPC) & Scientific Simulation: Computational fluid dynamics, finite element analysis, genomics pipelines, and weather modelling workloads require massive, fast memory to hold working datasets — the KSM4R5280D-64MD is optimally suited to these environments.
• Cloud & Hyper-Converged Infrastructure: Hyperscalers and private cloud operators building Nutanix, VMware vSAN, or OpenStack clusters benefit from the density-per-slot efficiency, reducing memory upgrade cycles and extending platform useful life.
• Financial Services & Real-Time Trading Systems: Low-latency DDR5 memory reduces tick-to-trade processing delays for algorithmic trading engines, risk calculation platforms, and real-time clearing and settlement systems.

Why Buy from Omnixon

Omnixon Global is a Dubai-based enterprise IT hardware distributor with deep regional expertise and a proven track record of serving enterprise clients, government entities, financial institutions, and cloud providers across the UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, Oman, and broader international markets. We maintain in-region inventory of mission-critical server memory including Kingston Server Premier DDR5 modules, enabling rapid fulfilment for production deployments and emergency upgrade scenarios without the delays associated with international shipping or customs clearance.

Our team of enterprise hardware specialists can assist with full memory configuration planning — including multi-socket population strategies, mixed-capacity configurations, and RAS feature optimisation — ensuring that your DDR5 investment is aligned with your server platform's capabilities and your operational requirements. Omnixon's procurement process is transparent, documentation-complete, and suited to the compliance requirements of large enterprise and public sector purchasing teams across the GCC. All products are sourced through authorised channels and shipped with full manufacturer documentation.

Related Products & Ecosystem

To build a complete, high-performance server memory ecosystem, consider pairing the KSM4R5280D-64MD with complementary products available from Omnixon's portfolio. On the compute side, explore Intel Xeon Scalable and AMD EPYC processors (CPUs) that natively support DDR5-4800. For persistent storage, Enterprise NVMe SSDs and Enterprise HDDs provide the high-throughput, low-latency data layers that complement large memory pools in tiered storage architectures. Networking the resulting compute platforms is made seamless with high-speed Network Adapters & NICs and Network Switches supporting 25GbE, 100GbE, and 400GbE fabrics. For infrastructure housing, Server Racks & Enclosures and Rack PDUs from Omnixon's power and physical infrastructure catalogue ensure your DDR5-equipped servers operate within optimal thermal and power environments. UPS & Power Protection solutions further safeguard your investment against power quality events that could otherwise compromise in-memory workloads and data integrity.