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| Model | M391T2863QZ3-CF7 |
|---|---|
| Product Type | Memory Module |
| Compliance Standards | EU RoHS,FCC |
| Memory Capacity | 1 GB |
| Memory Technology | DDR2 |
| Product Voltage | 1.8V |
| RAM Speed | 800MHz |
| RAM Standard | DDR2-800/PC2-6400 |
| Error Identifying | ECC |
| Signal Type | Unbuffered |
| Column Access Strobe (CAS) | CL6 |
| Rank | Single Rank x8 |
| Quantity of Pins | 240-pin |
| RAM Genre | UDIMM |
Designed as an ECC UDIMM for legacy server and workstation platforms, this DDR2-800 module is best suited for small business servers, NAS systems, or embedded applications where data integrity is critical. Its unbuffered architecture with single-rank x8 organization and CL6 latency delivers reliable error correction and stable signal quality without the added latency of registered memory, ensuring consistent performance in 24/7 operation.
1. ECC protection silently corrects single-bit errors, ensuring transactional data integrity for entry-level file servers that store irreplaceable business records.
2. Unbuffered signal architecture eliminates register latency, delivering agile command response for lightweight database applications where query consistency defines user satisfaction.
3. A dedicated 1GB capacity fits purpose-built network appliance firmware, slashing boot complexity and improving long-term uptime stability.
4. 800MHz transfer speed provides balanced bandwidth for handling multiple small-scale VPN connections without bottlenecking encrypted packet flows.
5. CL6 latency delivers predictable memory access timing, keeping real-time monitoring dashboards responsive under continuous sensor data ingestion.
The M391T2863QZ3-CF7 is a server-class DDR2-800 Unbuffered ECC UDIMM, purpose-built for entry-level servers and legacy workstations where uptime and accuracy are absolute requirements. Its four defining characteristics—ECC protection, unbuffered architecture, single-rank x8 organization, and balanced 800MHz CL6 timings—directly solve real operational pain points. ECC actively corrects single-bit errors, preventing silent data corruption that could quietly distort financial transaction logs or audit trails in a lightweight database. For you, this means every balance stays accurate without undetected bit-flips. The unbuffered design eliminates register latency, a critical advantage for latency-sensitive caching proxies or DNS resolvers where sub-millisecond responses keep services snappy. The single-rank configuration reduces bus loading, ensuring stable signal integrity when all four DIMM slots are populated in a compact 1U firewall or VPN gateway—maintaining performance under maximum capacity. Finally, the 800MHz speed with CL6 latency delivers consistent throughput for steady packet inspection or industrial control commands. Upgrading an aging mail server or a medical imaging archive with this module fortifies your infrastructure’s reliability, guaranteeing that every critical operation rests on uncompromising data integrity.
General Virtualization
This DDR2-800 ECC UDIMM provides the data integrity required for lightweight hypervisors on legacy server platforms. For general virtualization with small virtual machines, install modules in matched pairs to enable dual-channel interleaving, populating a minimum of four 1 GB modules (4 GB total) to give the hypervisor breathing room. Avoid mixing unmatched DIMMs, as unbuffered ECC demands strict symmetry for reliable error correction.
In-Memory Database
In-memory databases thrive on both low latency and fault tolerance, making ECC non-negotiable. Due to the 1 GB per module limitation, achieve meaningful cache sizes by fully populating all available slots—typically eight modules (8 GB) on dual-socket boards—and configure the memory as a unified interleaved pool. Prioritize rank interleaving over clock speed gains; the single-rank x8 design here helps keep command rates low, but capacity will still bottleneck real-world datasets quickly.
HPC
High-performance computing clusters often rely on node density and stable memory subsystems. Deploy this UDIMM in dual-processor nodes with a balanced DIMM population—for instance, four or six identical modules per CPU—to maximize bandwidth through symmetric channel loading. While 800 MHz and 1.8 V keep thermals predictable in dense racks, the 1 GB capacity restricts modern HPC workloads; reserve these modules for legacy parallel codes or control-plane nodes where DRAM errors must be eliminated without registered DIMM overhead.
Rigorously tested, compatible with HP ProLiant ML110 G5, Dell PowerEdge T100, Lenovo ThinkServer TS100.
Q: Can I mix this M391T2863QZ3-CF7 with other memory modules of different brands or speeds?
A: Mixing is not recommended. Server platforms demand strict uniformity. Combining this ECC UDIMM with different speeds or brands may compromise signal integrity and disable ECC protection, risking data corruption.
Q: Is this memory compatible with my system?
A: It is designed for servers/workstations using Intel 3000/5000 or AMD Opteron platforms with DDR2 support. Verify your board specifically requires unbuffered ECC DDR2-800 UDIMMs via its Qualified Vendor List.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical modules in sets according to the motherboard’s memory channel architecture. For dual-channel operation, install matched pairs in the same-colored slots, starting with the slots furthest from the CPU.
Q: Does this module support overclocking or XMP profiles?
A: No. As a server-grade ECC UDIMM, it adheres strictly to JEDEC DDR2-800 specifications. Overclocking and XMP are not supported to ensure 24/7 data integrity and system stability.
Q: What warranty and typical failure rate can I expect?
A: This module is backed by a 1-year warranty. Its ECC design and stringent component screening result in a very low annualized failure rate, typically under 0.5% in controlled server environments.