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| Model | M393T2950CZA-CE6Q0 |
|---|---|
| Product Type | Memory Module |
| Compliance Standards | EU RoHS,FCC |
| Memory Capacity | 1 GB |
| Memory Technology | DDR2 |
| Product Voltage | 1.8V |
| RAM Speed | 667MHz |
| RAM Standard | DDR2-667/PC2-5300 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL5 |
| Rank | Single Rank x4 |
| Quantity of Pins | 240-pin |
| RAM Genre | RDIMM |
Designed for legacy server platforms, this DDR2-667 Registered ECC DIMM (M393T2950CZA-CE6Q0) is ideally suited for memory-intensive virtualization and database workloads where data integrity is non-negotiable. Its single-rank x4 organization and registered signal topology minimize electrical loading on the memory bus, enabling stable operation in fully populated multi-channel systems while ECC corrects single-bit errors in flight.
1. Registered DIMM architecture buffers command and address signals, enabling all server slots to be populated simultaneously for maximum memory capacity without signal degradation.
2. ECC protection automatically corrects single-bit errors in real time, shielding long-running financial or database workloads from silent data corruption.
3. DDR2 technology provides a mature, rigorously validated memory foundation that ensures stable operation and extended lifecycle support in legacy enterprise servers.
4. Single Rank x4 organization uses x4-wide DRAM chips for superior error isolation and cleaner signal integrity, aligning with the zero-downtime demands of mission-critical environments.
5. CL5 latency guarantees deterministic low-lag access, improving responsiveness for latency-sensitive server tasks such as in-memory caching and virtualization scheduling.
The Samsung M393T2950CZA-CE6Q0 is a 1GB DDR2-667 Registered ECC DIMM, purpose‑built for legacy server platforms where uptime and data integrity are non‑negotiable. In a virtualisation cluster running multiple guest machines on ageing dual‑socket systems, an undetected single‑bit error in main memory can cascade into a corrupted hypervisor state and bring down dozens of services. The module’s ECC engine silently corrects these single‑bit flips—caused by background radiation or electrical noise—so your virtual infrastructure stays healthy without costly night‑time reboots. Meanwhile, the registered design buffers address and command signals, preventing signal‑loading degradation as you populate all DIMM slots. This becomes critical when you need to maximise capacity for an in‑memory database like Redis or Memcached: even with a modest 1GB stick, the stable electrical environment lets you fill every channel and achieve predictable, low‑latency response under heavy read‑write pressure. Combined with the 667MHz speed and CL5 single‑rank x4 organisation, the memory delivers consistent bandwidth and thermal efficiency in dense rack deployments, directly translating to lower refresh budgets and fewer memory‑related support tickets. If your mission‑critical application still relies on DDR2‑era servers, this module is a cost‑effective prescription for reliability, not just another spare part.
General Virtualization
For virtualized hosts using the 1GB M393T2950CZA-CE6Q0 Registered ECC DDR2-667 RDIMM, populate all memory channels symmetrically to maintain balanced bandwidth across VMs. Install a minimum of 8 identical modules (8 GB total) per socket for light workloads, and scale up by fully populating every slot with matching single-rank modules to reach the platform’s maximum capacity while ensuring interleaving and stability.
In-Memory Database
In-memory databases require large, resilient capacity; with 1 GB modules, you must populate every available DIMM slot to maximize addressable memory. Deploy identical RDIMMs across all branches and consider enabling memory mirroring or hot-spare ranks for fault tolerance, though this reduces usable capacity by half. Because total capacity on legacy DDR2 servers is often limited to 16–32 GB, evaluate dataset size carefully and plan for near-complete slot utilization.
High-Performance Computing (HPC)
HPC nodes benefit from high sustained bandwidth, so install these modules in balanced pairs per channel to avoid throttling. Configure at least four or eight identical 1 GB RDIMMs per node (4–8 GB total) to keep data local to each processing core. Since per-module capacity is small, prioritize filling all memory channels over very large per-node footprints, and tune problem sizes and MPI ranks to stay within the populated physical memory envelope.
Server memory, rigorously tested, compatible with Dell PowerEdge 2950, HP ProLiant DL380 G5, IBM System x3650.
Q: Can I mix this M393T2950CZA-CE6Q0 with other memory modules of different brands or speeds?
A: Mixing is not recommended. For reliable server operation, use identical RDIMMs with the same speed, rank, and ECC. Mixed modules may force the system to fall back to the lowest common speed or cause instability.
Q: Is this memory compatible with my server?
A: This DDR2-667 Registered ECC RDIMM is designed for older Intel and AMD server platforms with 240-pin sockets. Please verify your motherboard or system supports 1.8V, 4-rank capable, ECC Registered DDR2 memory before purchase.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate identical single-rank x4 RDIMMs in pairs per memory channel, following your server board's slot numbering. Typically, start with the slots farthest from the CPU per channel for proper signal termination and performance.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a server-grade Registered ECC DIMM built for stability at JEDEC standard DDR2-667. It does not support XMP or overclocking, as server environments prioritize data integrity over performance tuning.
Q: What warranty and typical failure rate can I expect?
A: This module is covered by a 1-year warranty. As an enterprise-class ECC RDIMM with rigorous screening, the typical Annualized Failure Rate (AFR) is very low under specified operating conditions, ensuring reliable long-term operation.