M393A8G40AB2-CVFBQ Samsung 64GB DDR4-2933 2RX4 ECC Memory Module

Samsung 64GB DDR4-2933 Memory 

The Samsung M393A8G40AB2-CVFBQ 64GB PC4-23400 DDR4-2933Mbps 2RX4 ECC RDIMM is engineered for enterprise-grade servers and professional workstations. This high-capacity memory module ensures rapid data transfer, dependable error correction, and optimized performance for demanding computing environments.

General Information

• Brand: Samsung
• Part number: M393A8G40AB2-CVFBQ
• Product name: 64GB DDR4 SDRAM memory module

Technical Specifications

Core Memory Details

• Capacity: 64GB
• Technology: DDR4 SDRAM
• Modules: 1 × 64GB
• Bus speed: 2933Mbps (DDR4-2933 / PC4-23400)

Reliability and Architecture

• Data integrity: ECC (Error-Correcting Code)
• Signal processing: Registered RDIMM
• CAS latency: CL21
• Rank features: Dual rank x4 (2RX4)

Physical Characteristics

Form Factor and Build

• Interface: 288-pin RDIMM
• Design: Server-grade construction for durability

Shipping and Handling

• Dimensions: 1.00 (height) × 6.75 (depth)
• Weight: 0.20 lb

Compatibility and Applications

Best Use Cases

• Enterprise servers: Reliable memory for databases, ERP, and virtualization tasks.
• Professional workstations: Smooth performance in CAD, rendering, and analytics.
• High-availability systems: ECC and RDIMM design support continuous uptime.

M393A8G40AB2-CVFBQ 64GB DDR4-2933 ECC Memory Overview

The Samsung M393A8G40AB2-CVFBQ 64GB PC4-23400 DDR4-2933Mbps 2RX4 ECC Memory module represents a critical segment within the enterprise server memory category, engineered specifically for data centers, virtualization environments, cloud infrastructure, and mission-critical computing platforms. This category focuses on Registered DDR4 ECC memory solutions that are optimized for sustained workloads, predictable latency, and long-term reliability in multi-processor server systems. Unlike consumer-grade memory, this class of memory is designed to operate continuously under high thermal and electrical stress while maintaining strict data integrity.

DDR4 server memory modules such as this one are built around advanced DRAM manufacturing processes, offering increased memory density, lower operating voltage, and higher transfer rates compared to previous generations. Operating at 2933Mbps under the PC4-23400 standard, this category enables higher bandwidth per channel, which is essential for modern CPUs that rely on fast memory access to support parallel processing, analytics, database transactions, and virtualization workloads.

64GB High-Density Capacity for Scalable Systems

The 64GB capacity of the Samsung M393A8G40AB2-CVFBQ places it firmly within the high-density memory subcategory, designed to support scalable server configurations where memory availability directly impacts performance and consolidation ratios. High-capacity modules allow system architects to populate fewer DIMM slots while still achieving large memory footprints, reducing power consumption and improving airflow efficiency within server chassis.

This memory category is particularly valuable in environments where large in-memory datasets are required, such as enterprise databases, ERP systems, real-time analytics engines, and virtual machine hosts. By enabling higher memory capacity per DIMM, servers can support more simultaneous workloads, reduce disk I/O dependency, and deliver consistent response times even under heavy utilization.

PC4-23400 Bandwidth and DDR4-2933

Operating under the PC4-23400 specification, this memory category delivers a theoretical bandwidth of up to 23.4GB/s per module. The DDR4-2933 speed grade aligns with modern server CPU memory controllers, ensuring compatibility and optimal performance without the need for downclocking in supported systems. This level of bandwidth is critical for data-intensive applications that depend on rapid memory access, such as in-memory databases, AI inference workloads, and high-frequency transaction processing.

Compared to earlier DDR4 speed grades, DDR4-2933 offers a balanced combination of throughput and power efficiency. This category benefits from DDR4’s reduced operating voltage, typically 1.2V, which contributes to lower overall system power consumption and reduced heat output, an important consideration in large-scale data center deployments.

Latency Considerations and Real-World Throughput

While raw bandwidth is a defining characteristic of this category, latency optimization is equally important. The Samsung M393A8G40AB2-CVFBQ is designed to meet JEDEC timing specifications that ensure stable operation under load while delivering consistent access times. In real-world server workloads, this balance between bandwidth and latency translates into smoother application performance and reduced jitter.

Enterprise memory categories prioritize predictability over aggressive tuning, which allows system integrators to deploy large fleets of servers with uniform performance characteristics. This consistency simplifies capacity planning and performance modeling across complex infrastructures.

2RX4 Registered DIMM Architecture

The 2RX4 configuration is a defining attribute of this server memory category. Dual-rank memory architecture allows the module to present two independent ranks of memory to the memory controller, improving effective bandwidth utilization through rank interleaving. This design is particularly advantageous in multi-channel server platforms, where maximizing memory throughput is essential for CPU efficiency.

The x4 DRAM organization further enhances reliability by enabling more granular error detection and correction. Compared to x8 configurations, x4-based modules offer improved fault tolerance, which is why they are commonly specified in enterprise and hyperscale server environments where uptime and data integrity are paramount.

Registered DIMM Signal Integrity

Registered DIMMs, also known as RDIMMs, incorporate a register between the memory controller and the DRAM chips. This category leverages registered buffering to reduce electrical load on the memory controller, allowing systems to support higher memory capacities and more populated DIMM configurations without compromising stability.

In multi-socket server architectures, RDIMMs like the Samsung M393A8G40AB2-CVFBQ enable reliable communication across complex memory topologies. This characteristic is essential for enterprise servers that require full memory slot population to achieve maximum capacity and bandwidth.

Compatibility with Modern Server Platforms

The Samsung M393A8G40AB2-CVFBQ is engineered for compatibility with a wide range of modern server platforms from leading OEMs. This category is optimized for systems based on Intel Xeon and AMD EPYC processors that support DDR4-2933 RDIMM configurations. Proper compatibility ensures that memory operates at rated speeds and capacities without requiring manual configuration or compromise.

Server memory categories emphasize adherence to JEDEC standards to guarantee interoperability across platforms. This allows IT teams to deploy memory upgrades with confidence, knowing that the modules will integrate seamlessly into existing infrastructure.