General

Engineer's Note

This DDR3-1600 registered ECC RDIMM with a low 1.35V operating voltage is purpose-built for dense server environments running virtualization, in-memory databases, and other mission-critical workloads that demand uncompromising data integrity. Its dual-rank x4 organization combined with registered signaling and ECC enables stable high-capacity configurations while reliably correcting single-bit errors and detecting multi-bit faults under continuous 24/7 operation.

Technical Specs & Insights

1. ECC error correction actively detects and fixes single-bit memory errors, preventing silent data corruption that could crash critical database services or compromise long-running analytics jobs in a server environment.
2. Registered signal buffering isolates the memory controller from excessive electrical loading, enabling densely populated server boards to maintain rock-solid stability while scaling up for memory-hungry enterprise applications.
3. Dual Rank x4 organization alternates bank accesses across internal ranks, maximizing sustained bandwidth utilization so virtualized workloads experience fewer stalls and more consistent latency under heavy consolidation.
4. 1.35V low-voltage operation reduces the power budget per module, directly trimming datacenter energy bills and easing cooling demands in racks packed with high-density compute nodes.
5. 1600MHz transfer speed raises the channel throughput ceiling, cutting data retrieval times for in-memory caches and delivering snappier response to line-of-business applications during peak load.

Why These Specs Matter

The M393B1K70QB0-YKO is a 1.35V Registered DDR3-1600 RDIMM engineered for enterprise servers where uptime and scalability are non-negotiable. Its ECC actively detects and corrects single-bit errors; in a virtualization cluster, a flipped bit in the hypervisor can silently corrupt guest VMs or crash an entire node—ECC erases that risk, preserving service continuity for your consolidated workloads. The registered buffer restores signal integrity, enabling you to fully populate all memory channels without degradation, which is critical when you need to carve out large, stable memory pools for dozens of virtual machines on a single host. The dual-rank x4 organization supports rank interleaving, overlapping memory accesses to raise effective bandwidth; for an in-memory database like Redis or SAP HANA, this directly translates to faster, more consistent query throughput under heavy concurrent loads. Operating at just 1.35V, the module dramatically lowers power draw and cooling overhead across your server fleet, turning every saved watt into tangible operational savings. This is how raw specifications become real data-center resilience.

Endurance & Reliability

General Virtualization
This 8GB DDR3L-1600 RDIMM is ideal for moderate-density virtualization hosts. Populate six to twelve modules across all memory channels for a balanced 48–96 GB footprint, which comfortably supports 20–40 light-to-medium VMs when paired with a dual-socket Xeon E5 v1/v2 platform. Stick to identical dual-rank x4 DIMMs per channel to maximize interleaving and throughput while keeping power consumption low with 1.35V operation.

In-Memory Database
For in-memory workloads like Redis or Memcached, latency and capacity are paramount. Use the maximum supported DIMMs per server—often 24 slots across two processors—to reach 192 GB, ensuring datasets fit entirely in RAM. The registered ECC and dual-rank design provide the signal integrity and error correction needed for 24/7 data integrity, though 8 GB DIMMs may require a larger node count for multi-terabyte caches.

High-Performance Computing
HPC clusters benefit from the module’s 1600 MHz speed and low CAS latency of 11 on DDR3 platforms. Configure nodes with one DIMM per channel across all sockets (typically 8–16 modules) to sustain memory bandwidth for simulation and computational fluid dynamics codes. The 1.35V low-voltage operation reduces thermal load in dense racks, allowing higher ambient temperatures and lower cooling costs during sustained parallel jobs.

Verified Compatibility

Rigorously tested, compatible with Dell PowerEdge R720/R620, HP ProLiant DL360p/DL380p Gen8, Lenovo ThinkServer RD630, Cisco UCS C240 M3.

FAQ