General

Engineer's Note

This 8GB DDR3-1600 registered ECC RDIMM (M393B1G70BH0-CK0Q9) is purposed for enterprise servers and excels in virtualization clusters and in-memory database workloads where uncompromising data integrity is required. Its registered signal type stabilizes command and address buses in dense multi-DIMM configurations, while the single-rank x4 organization reduces bus loading and the integrated ECC delivers robust single-bit error correction to maximize uptime.

Technical Specs & Insights

1. ECC error correction detects and corrects single-bit memory faults silently, safeguarding transactional database integrity and preventing costly data corruption in always-on enterprise servers.
2. Registered DIMM architecture buffers address and command lines, preserving signal integrity across fully populated memory channels for uncompromised stability in dense virtualization hosts.
3. 1600MHz clock speed translates to PC3-12800 peak bandwidth, accelerating in-memory analytics and large-page table walks under heavy multi-tenant workloads.
4. Single-rank x4 organization minimizes electrical loading on the memory bus, allowing consistent 1600MHz operation even when all 24 DIMM slots are filled in a 2U rack server.
5. An 8-gigabyte capacity per module hits a pragmatic density sweet spot for scale-out clusters, delivering ample guest memory for containers and mid-sized VMs without overspending.

Why These Specs Matter

The M393B1G70BH0-CK0Q9 is a server-grade RDIMM, and its architecture directly addresses the punishing demands of modern data centers. In a virtualized cluster hosting dozens of mission-critical VMs, ECC is non-negotiable: it detects and corrects single-bit memory errors caused by cosmic radiation or silicon aging, preventing a flipped bit from silently corrupting an in-memory database like SAP HANA or causing a hypervisor to crash. The registered signal buffer allows 24 DIMM slots per host to be fully populated without electrical loading instability, so you can scale up to 768GB RAM per server safely—essential for dense private clouds. Meanwhile, the single-rank x4 organization paired with 1600MHz speed balances low latency and high sustained bandwidth, keeping transaction commit times predictable under heavy OLTP workloads. This isn’t just memory; it’s insurance for uptime and data fidelity when every workload counts.

Endurance & Reliability

General Virtualization
Equip dual-socket servers with at least eight of these 8GB RDIMMs (64GB total), filling all memory channels evenly to maintain full bandwidth and balanced performance for hypervisor workloads. Scale to 16 modules (128GB) when hosting a larger virtual machine density or resource-heavy applications, ensuring headroom for memory ballooning and failover.

In-Memory Database
Maximize capacity by populating every available DIMM slot with this 8GB module—commonly 16 or 24 slots in a dual-socket DDR3 system—to deliver 128GB to 192GB of low-latency memory. Keeping the entire dataset in RAM avoids disk I/O bottlenecks, and if capacity needs exceed this limit, combine with 16GB RDIMMs while retaining these modules in remaining slots.

High-Performance Computing (HPC)
Install exactly one 8GB RDIMM per memory channel (1DPC) to sustain the full 1600 MT/s speed, which is critical for bandwidth-sensitive parallel tasks. On a typical dual-socket node with four channels per CPU, this yields 64GB and avoids the clock reductions that occur when populating more than one DIMM per channel, directly protecting floating-point throughput in MPI or OpenMP workloads.

Verified Compatibility

Rigorously tested DDR3 Registered ECC memory, compatible with Dell PowerEdge R720, HP DL380p Gen8, Lenovo RD430.

FAQ