Samsung M393A8K40B21-CRB

Overview

The Samsung M393A8K40B21-CRB is a 64GB DDR4 registered DIMM server memory module designed to expand memory capacity in data centers while maintaining efficiency. Operating at 2133 Mbps with a low 1.2-volt power draw, it delivers the bandwidth required by modern processors and helps manage power consumption and cooling demands effectively. Its 288-pin form factor and 4R x4 layout ensure compatibility with standard DDR4 server sockets, making it a practical choice for scaling server memory.

Key features

• Registered DIMM design with an integrated register to maintain signal integrity across multiple DIMMs in the same channel
• On-board error correction using an 8-bit parity scheme to detect and correct memory errors, enhancing system reliability
• Supports both x4 and x8 DRAM organizations, providing flexibility for various server configurations
• Compatible with up to two DIMMs per channel, allowing straightforward memory scaling in dual- or quad-socket servers
• Energy-efficient operation at 1.2 volts, reducing power consumption and heat generation in dense server environments

Key specs

• Capacity: 64 GB
• Memory type: DDR4 Registered DIMM
• Data rate: 2133 Mbps
• Voltage: 1.2 V
• Layout: 4R x4
• Form factor: 288-pin
• Error correction: 8-bit parity ECC
• Supports up to two DIMMs per channel

Compatibility and scalability

This memory module fits standard DDR4 server sockets and supports configurations with up to two DIMMs per channel, making it suitable for a wide range of server architectures including dual-socket and quad-socket systems. Its support for both x4 and x8 DRAM organizations allows it to integrate smoothly into existing hardware setups, enabling phased upgrades without requiring a full system overhaul.

Performance and reliability

With its registered design and integrated register, the module ensures clean clock, command, and control signals, which is critical when multiple memory modules operate on the same channel. The built-in error correction with 8-bit parity protects against data corruption and unexpected crashes, which is essential for demanding workloads such as virtualization, transactional databases, and in-memory analytics.

Ideal uses and environments

This Samsung memory module is well suited to data centers and enterprise servers that require large memory capacity combined with stable and efficient operation. It works well in environments running VMware hosts, SQL servers, or high-performance computing nodes where maintaining uptime and responsiveness is crucial. Its energy-efficient design also helps reduce operational costs in large-scale deployments.

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