Samsung 8GB DDR3 2RX4 PC3L ECC REG Server Memory Module

The Samsung M393B1K70DH0-YH9 is an 8 GB server memory module that uses DDR3 technology and features registered ECC. Designed for motherboards that support 240-pin RDIMM slots, it delivers a data rate of 1333 Mbps while keeping signal integrity high through an onboard register that buffers clock, command, and control lines. Because the module can run at either 1.5 V or 1.35 V, system builders gain flexibility when balancing performance with power efficiency.

This module fits naturally in rack or tower servers that handle virtualization, database work, or any workload where stability is more important than raw clock speed. The ECC mechanism, backed by an extra 8-bit parity field, detects and corrects common memory errors before they reach the operating system, which helps maintain uptime in environments such as small business data centers, lab servers, or edge deployments.

The 2-rank by 4-device layout distributes the memory load evenly across the bus, making it a sensible choice for dual-processor boards where signal quality can suffer under high traffic. If you are refreshing older systems or adding capacity to a mixed-voltage fleet, this dual-voltage design lets you match the module to what the motherboard already supports without sacrificing future flexibility.

Before installation, confirm that your server’s user manual lists registered ECC DDR3 modules in its qualified vendor list, then power down, seat the module firmly in the 240-pin slot, and reboot to enjoy an immediate 8 GB boost in reliable, buffered memory capacity.

• 8 GB DDR3 RDIMM with error-correcting code
• 1333 Mbps data rate for balanced speed and stability
• 2-rank by 4-device organization improves signal distribution
• Operates at either 1.5 V or 1.35 V for power flexibility
• 240-pin interface compatible with ECC-enabled server boards