Secure payments
Standard refund policy
Trade Assurance
| Product Type | Memory Module |
|---|---|
| Memory Capacity | 8 GB |
| Memory Technology | DDR3 |
| Product Voltage | 1.5V |
| RAM Speed | 1066MHz |
| RAM Standard | DDR3-1066/PC3-8500 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL7 |
| Rank | Quad Rank x8 |
| Quantity of Pins | 240-pin |
| RAM Genre | RDIMM |
This is a server-class DDR3 RDIMM engineered for legacy enterprise platforms running virtualization, in-memory databases, or other data-integrity-critical workloads where ECC protection is non-negotiable. Its quad-rank x8 configuration and registered signal type maximize memory density and signal stability in fully populated multi-DIMM channels, while the CL7 latency delivers reliable, low-overhead access for sustained throughput.
1. ECC error correction works silently to detect and fix single-bit memory faults, preventing data corruption in financial databases and virtualized environments where uptime and integrity are non-negotiable.
2. Registered signal type buffers the command and address lines, enabling a server to pack multiple DIMMs per channel without signal degradation, which is essential for maximizing memory capacity in dense rack deployments.
3. Quad Rank x8 configuration packs four logical ranks onto a single module, significantly increasing per-slot density so that hypervisor hosts can allocate more memory to guest VMs without needing extra physical slots.
4. An 8GB capacity offers a reliable middle ground for consolidating small enterprise workloads, allowing IT to run more concurrent mail, web, and lightweight application servers on a single physical node.
5. 1066MHz speed with PC3-8500 bandwidth ensures steady, predictable throughput for legacy line-of-business applications, honoring service-level agreements by avoiding memory bottlenecks during peak transaction loads.
The M393B1K73CHD-CF8 is an 8GB DDR3-1066 Registered DIMM (RDIMM) designed for server workloads, where its four critical attributes—ECC, registered buffering, quad-rank density, and CL7 latency—directly solve mission-critical challenges. In virtualization clusters, silent memory errors can crash multiple VMs; the module’s ECC engine actively corrects single-bit flips, preserving uptime and data integrity for every tenant. The registered buffer isolates the memory controller from heavy DRAM loads, enabling you to fill every DIMM slot without signal compromise—a must when scaling memory to 512GB or more for dense VM hosts. Quad-rank x8 construction doubles the capacity per module compared to dual-rank alternatives, letting in-memory databases like Redis or SAP HANA hold larger datasets directly in RAM for real-time processing. Finally, the true CL7 latency at 1066MHz provides deterministic low latency, accelerating transactions and meeting strict query SLAs under load.
General Virtualization
For general virtualization hosts running hypervisors like VMware ESXi or Hyper-V, this 8GB DDR3-1066 RDIMM provides a solid entry point. Deploy modules in matched sets of six or eight per dual-socket system to populate all memory channels, achieving balanced capacity and bandwidth. Aim for 48GB to 64GB per host using these quad-rank DIMMs, which enable moderate VM density without excessive power draw.
In-Memory Database
In-memory databases such as Redis or SAP HANA demand low latency and high reliability, making ECC registered memory essential. Populate all available DIMM slots with identical 8GB RDIMMs to maximize capacity while maintaining lockstep memory interleaving. A minimum of 128GB (16 modules) per node is recommended for mid-sized datasets, ensuring data consistency through error correction and sustained performance under heavy write loads.
High-Performance Computing (HPC)
For HPC clusters executing parallel workloads, memory bandwidth and RAS features are critical. Install these quad-rank RDIMMs in fully balanced configurations—typically 12 or 16 modules per 2-socket node—to saturate all memory controllers. Capacity per node should target 96GB to 128GB, accommodating large simulation data sets and MPI job requirements while benefiting from registered buffering that stabilizes signals across densely populated servers.
Validated for servers: compatible with Dell PowerEdge R710/R610, HP ProLiant DL380 G7, and select IBM System x models.
Q: Can I mix this M393B1K73CHD-CF8 with other memory modules of different brands or speeds?
A: Mixing is not recommended. This RDIMM requires identical ECC Registered, quad-rank x8 modules of the same speed and CAS latency to avoid stability risks and server POST failures.
Q: Is this memory compatible with my Intel Xeon or AMD Opteron server platform?
A: Compatibility requires a DDR3 chipset supporting Registered ECC, 1.5V, and quad-rank 1066MHz DIMMs. Verify your server board supports 8GB RDIMMs with 4Rank x8 organization and 240-pin layout.
Q: What is the recommended DIMM population order for optimal performance on a server board?
A: Populate identical quad-rank RDIMMs starting with the first slot of each memory channel, following the board's color-coded banks. This ensures balanced interleaving and avoids rank-mixing penalties.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a JEDEC-compliant server RDIMM operating at fixed 1066MHz with CL7. Overclocking and XMP are not supported and would violate registered DIMM signaling integrity requirements.
Q: What warranty and typical failure rate can I expect for this module?
A: This part carries a 1-year warranty. As an enterprise-grade RDIMM with ECC, it exhibits an extremely low annualized failure rate under normal thermal and electrical operating conditions.