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| Model | M393T5160QZA-CF7 |
|---|---|
| Compliance Standards | EU RoHS,FCC |
| Product Type | Memory Module |
| Memory Capacity | 4 GB |
| Memory Technology | DDR2 |
| Product Voltage | 1.8V |
| RAM Speed | 800MHz |
| RAM Standard | DDR2-800/PC2-6400 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL6 |
| Rank | Dual Rank x4 |
| Quantity of Pins | 240-pin |
| RAM Genre | RDIMM |
This registered DDR2-800 RDIMM with ECC is purpose-built for legacy server platforms, delivering the data integrity essential for memory-critical workloads such as virtualization hosts and small-scale in-memory databases. Its dual-rank x4 organization and CL6 latency maximize interleaving efficiency on aging chipsets while the registered signal buffering stabilizes multi-module configurations, ensuring reliable operation even in fully populated server nodes.
1. ECC memory detects and corrects single-bit errors silently, safeguarding transactional integrity for always-on databases and financial services running on legacy enterprise servers.
2. Registered signal buffering stabilizes the command and address bus, allowing a server motherboard to populate all channels with high-density modules without signal degradation.
3. Dual rank x4 organization increases bank-level parallelism, helping virtualized environments maintain steady memory response even as multiple VMs compete for resources.
4. A 4 GB capacity suits isolated service roles like lightweight domain controllers or monitoring appliances, where dedicated memory prevents noisy-neighbor interference in a rack.
5. The PC2-6400 rated bandwidth reliably feeds concurrent network I/O and file-serving requests, making it a cost-effective backbone for small business server tasks that prioritize uptime over raw speed.
The M393T5160QZA-CF7 is a server-grade DDR2-800 Registered ECC DIMM, and its four defining characteristics directly address the critical demands of data center infrastructure. The integrated ECC engine continuously detects and corrects single-bit errors, preventing silent data corruption in memory-intensive databases like SAP HANA or Redis. For a financial transaction system, this means the difference between a verified balance and an unrecoverable bit flip that cascades into financial discrepancy—data integrity is not just a specification, it is the bedrock of trust. The Registered buffer stabilizes command and address signals, allowing a virtualization cluster running VMware ESXi to populate all 16 or more DIMM slots without signal degradation. This enables you to confidently scale VM density, since the reduced electrical load on the memory controller eliminates intermittent boot failures and unexplained host crashes under heavy consolidation. Its dual-rank x4 organization leverages rank interleaving to overlap memory accesses, significantly improving bandwidth utilization. When a hypervisor simultaneously serves dozens of virtual machines or when a real-time analytics platform queries massive in-flight datasets, the interleaved ranks reduce latency penalties and prevent the memory bus from stalling. Finally, the 800MHz frequency paired with a Column Access Strobe latency of CL6 delivers deterministic response times that keep synchronous replication and high-frequency OLTP workloads fluid, ensuring that even a legacy server refresh yields predictable, enterprise-grade performance without silent data risk.
Server Memory Identified
Based on the DDR2-800 Registered ECC RDIMM (4GB, dual-rank x4, CL6, 1.8V), this is legacy server memory. Capacity planning must respect its age, limited density, and power constraints while maximizing stability for retired or niche duty.
General Virtualization
For light virtualization on older hosts, install modules in matched sets to populate all channels. A common balanced config is 8 x 4GB (32GB total), enabling memory interleaving and sufficient headroom for 8–12 small VMs. Never mix ranks or vendors; uniformity preserves ECC reliability under multi-tenant loads.
In-Memory Database
Latency-sensitive caching layers require maximum capacity with full ECC protection. Deploy 16 x 4GB (64GB total) across all DIMM slots if the board supports it, observing identical part numbers. This dense population feeds large in-memory datasets, but note the 800MT/s speed ceiling—only suitable for read-heavy caches, not high-throughput transactional stores.
High-Performance Computing
HPC clusters built on DDR2-era nodes demand large per-socket memory footprints for MPI batch jobs. Configure 8 x 4GB or 16 x 4GB per node to reach 32–64GB, leveraging registered DIMMs to maintain signal integrity at full population. Dual-rank x4 modules help rank interleaving, yet plan for higher power draw; adequate cooling and 1.8V supply stability are critical for long-running scientific workloads.
Rigorously tested, compatible with Dell PowerEdge R805, HP ProLiant DL385 G2, IBM System x3455, and other DDR2 servers.
Q: Can I mix this M393T5160QZA-CF7 with other memory modules of different brands or speeds?
A: Mixing is strongly discouraged for server environments. Mismatched DIMMs can cause instability, ECC errors, and even system boot failure. Always populate identical modules to ensure reliability.
Q: Is this memory compatible with my server system?
A: This RDIMM is designed for DDR2-era server platforms supporting Registered ECC memory, such as Intel 5000/5400 chipset-based boards. Please verify your motherboard requires 240-pin DDR2-800 Registered ECC DIMMs.
Q: What is the recommended DIMM population order for optimal performance?
A: Follow your server board manual. Generally, populate identical DIMMs in groups matching the memory channel architecture, starting from the farthest slots from the CPU per channel for balanced interleaving and cooling.
Q: Does this module support overclocking or XMP profiles?
A: No. As a server-grade Registered ECC DIMM, it operates strictly at JEDEC standard DDR2-800 with CL6 timings. Overclocking and XMP are not supported, prioritizing data integrity over speed.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. Enterprise memory like this exhibits very low failure rates under proper operating conditions, typically measured in single-digit AFR percentage, ensuring long-term stability.