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| Product Type | Memory Module |
|---|---|
| Compliance Standards | RoHS |
| Memory Capacity | 8 GB |
| Memory Technology | DDR3 |
| Product Voltage | 1.5V |
| RAM Speed | 1866MHz |
| RAM Standard | DDR3-1866/PC3-14900 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL13 |
| Rank | Single Rank x4 |
| Quantity of Pins | 240-pin |
| RAM Genre | RDIMM |
This 8GB DDR3-1866 Registered ECC memory module is engineered for server platforms handling virtualization and in-memory databases, where its registered signal buffering and error correction ensure rock-solid data integrity under high-density, multi-DIMM configurations. The single-rank x4 organization and CL13 latency deliver a precise balance of tight timing and reliable throughput, directly improving responsiveness in transactional workloads without sacrificing stability.
1. Its moderate capacity per module supports dense virtualization without overspending on unused headroom, ideal for cost-conscious server scale-out.
2. High-frequency operation unlocks the full bandwidth potential of server-grade memory controllers, crucial for data-heavy applications.
3. On-the-fly error correction prevents silent data corruption, a must-have for transactional databases and long-running computational workloads.
4. The onboard register buffers address and command signals, enabling stable operation when populating all memory channels in large-scale server deployments.
5. The single-rank x4 layout maintains optimal command rate, minimizing access latencies in heavily consolidated virtual machines.
As a server-grade RDIMM, the Micron MT18JSF1G72PZ-1G9 is purpose-built for environments where an undetected memory error translates directly into financial loss or data corruption. Its true ECC engine does not simply detect single-bit flips – it silently corrects them. In a virtualization cluster running dozens of VMs on a single hypervisor, a cosmic-ray-induced bit flip in guest kernel memory can crash critical services or poison a replicated database. ECC turns that catastrophic fault into a transparent non-event, keeping your virtual infrastructure predictably alive.
Beyond error correction, the module’s registered (buffered) signal path stabilizes the command/address bus, allowing you to fully populate all DIMM slots per channel without signal degradation. This is non-negotiable in large memory-resident databases like SAP HANA or high-density Redis clusters, where every terabyte of RAM must remain accessible and coherent. Complementing that scalability is the 1866 MT/s speed, which delivers 14.9 GB/s of peak bandwidth per channel to feed data-hungry virtual machines simultaneously without throttling. Finally, the single‑rank x4 organization further reduces electrical loading, letting you sustain 1866 MT/s even across three DIMMs per channel, while the x4 data‑bus architecture maximizes bandwidth efficiency under sustained transaction loads. Together, these engineering choices move you from simply having memory to safeguarding application continuity and database integrity at scale.
This 8GB DDR3-1866 ECC Registered DIMM is a server-grade module. Capacity planning must match workload demands as follows.
General Virtualization
Populate all memory channels uniformly with these RDIMMs to exploit interleaving. A solid baseline is one module per channel (e.g., eight modules for a quad-channel CPU, yielding 64 GB) for moderate VM density. Scale by adding a second identical module per channel while preserving perfect symmetry.
In-Memory Database
Maximize overall capacity by fully populating every DIMM slot with the 8 GB modules, leveraging ECC for data integrity. In a dual-socket server with 24 slots, this delivers 192 GB suitable for mid-size in-memory datasets. Keep registered CL13 timings uniform across all sticks to avoid latency penalties.
High-Performance Computing
Feed bandwidth-hungry cores by placing at least one 8 GB RDIMM in each memory channel; a typical quad-channel processor benefits from eight modules (64 GB). For capacity-bound simulations, install two modules per channel only if the platform sustains the rated 1866 MHz without downclocking, otherwise stay at one per channel.
Rigorously tested DDR3 ECC Registered DIMM, compatible with Dell PowerEdge R730, HPE ProLiant DL380 Gen9, Lenovo System x3650 M5, and more.
Q: Can I mix this MT18JSF1G72PZ-1G9 with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands or speeds is not recommended. It may cause stability issues, loss of ECC functionality, or the system running at the speed of the slowest module, compromising server reliability.
Q: Is this memory compatible with my Intel Xeon E5-2600 v2 series server platform?
A: This DDR3-1866 RDIMM is compatible with Intel Xeon E5-2600 v2 and v3 platforms that support registered ECC memory. Verify your server's qualified vendor list (QVL) or chipset specifications to ensure 8GB RDIMM support.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical DIMMs per memory channel, starting with the slot farthest from the CPU. Typically, fill blue slots first for dual-channel configurations. Maintain balanced loading across all memory controllers for best throughput.
Q: Does this module support overclocking or XMP profiles?
A: No. Registered ECC memory operates at standard JEDEC speeds and voltages for data integrity. Overclocking or XMP is not supported, as it would compromise server stability and error correction capabilities.
Q: What warranty and typical failure rate can I expect?
A: This module includes a one-year warranty. It demonstrates a very low AFR (annualized failure rate), typically below 0.5%, thanks to stringent quality testing and compliance with RoHS standards.