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| Model | MT18HTF12872AY-667B3 |
|---|---|
| Product Type | Memory Module |
| Compliance Standards | RoHS |
| 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 | Unbuffered |
| Column Access Strobe (CAS) | CL5 |
| Rank | Dual Rank x8 |
| Quantity of Pins | 240-pin |
| RAM Genre | UDIMM |
Designed for entry-level servers and workstations requiring data integrity, this DDR2-667 Unbuffered ECC UDIMM is best suited for legacy single-socket platforms running lightweight virtualization or archival NAS workloads. Its dual-rank x8 organization enhances command interleaving for modest throughput gains, while ECC correction safeguards against single-bit errors in extended-duration operations.
1. ECC error correction actively detects and fixes single-bit memory faults, preserving data integrity in long-running server tasks where undetected corruption could silently compromise financial or medical records.
2. Dual Rank x8 organization interleaves memory banks to keep the channel busy, improving bandwidth utilization for consistent response times under moderate virtualization workloads.
3. Unbuffered signal path eliminates the register delay found in registered modules, delivering lower latency that benefits latency-sensitive small business databases and caching layers.
4. Operation at this mid-tier DDR2 frequency provides stable throughput without excessive power draw, well-matched to entry-level server boards that prioritize reliability over peak speed.
5. DDR2’s 1.8V supply voltage compared to later generations keeps thermal output moderate inside compact server chassis, reducing cooling demands for always-on deployments.
The MT18HTF12872AY-667B3 is a 1GB DDR2-667 Unbuffered ECC UDIMM designed for small servers, NAS appliances, and mission-critical workstations. Its ECC correction is vital in always-on environments: a bit-flip in a ZFS metadata block or financial database transaction log could corrupt data silently; ECC detects and fixes such errors instantly, safeguarding your records. Unbuffered architecture eliminates register delay, providing lower latency critical for memory-resident applications. Running a Redis cache or a light virtualization host with two VMs demands snappy response—every microsecond saved accelerates queries and keeps guest operating systems fluid. The Dual Rank x8 organization enables rank interleaving, effectively doubling memory bandwidth under concurrent loads. When those VMs contend for the memory bus, interleaving prevents bottlenecks that cause sluggish performance. Finally, the 1.8V DDR2-667/PC2-5300 specification with CL5 timings ensures drop-in stability on legacy boards, offering a reliable upgrade path without surprises. For operation-critical tasks where data integrity meets responsive computing, this module turns technical merit into real-world dependability.
General Virtualization
For basic virtualization hosts using this DDR2-667 ECC UDIMM, install modules in matched pairs to enable dual‑channel interleaving, which improves memory throughput under concurrent VM loads. Start with eight 1 GB modules (8 GB total) and scale to sixteen modules if your server board supports it, ensuring adequate headroom for hypervisor overhead and multiple light guests.
In‑Memory Database
In‑memory databases demand the largest possible capacity and data integrity, making this ECC memory essential. Populate every available DIMM slot—typically 16 or more modules (16 GB+) on dual‑socket DDR2 platforms—to build a resilient, fully‑buffered platform that reduces the risk of silent data corruption under heavy transactional workloads.
High‑Performance Computing
HPC clusters often rely on parallelism and memory bandwidth. Configure the node with an even population of identical 1 GB UDIMMs across both memory channels, using four or eight modules to maximize sustained bandwidth. Keep CAS latency (CL5) consistent across all sticks to maintain synchronization and avoid bottlenecks during tightly coupled parallel computations.
Rigorously tested server memory, compatible with Dell PowerEdge 860, HP ProLiant ML110 G5, IBM System x3200.
Q: Can I mix this MT18HTF12872AY-667B3 with other memory modules of different brands or speeds?
A: Mixing is not recommended. ECC UDIMMs require identical specs for stable error correction. Different brands or speeds may cause boot failures or silent data corruption in server environments.
Q: Is this memory compatible with my server? I am using an Intel or AMD platform.
A: Compatibility depends on the platform's support for DDR2-667 ECC Unbuffered DIMMs. Please verify your server board’s qualified vendor list to ensure it accepts 240-pin, 1.8V UDIMMs with ECC.
Q: What is the recommended DIMM population order for optimal performance in a server?
A: Populate identical modules in matched pairs according to your motherboard manual, typically filling the slots of the same memory channel first. This enables dual-channel mode and reliable ECC operation.
Q: Does this module support overclocking or XMP profiles?
A: No. This is a server-grade ECC UDIMM built for stability at JEDEC standard DDR2-667 speeds. It does not support overclocking or XMP, as data integrity takes priority over performance tuning.
Q: What warranty and typical failure rate can I expect with this module?
A: The MT18HTF12872AY-667B3 comes with a 1-year warranty. Typical annualized failure rate for such enterprise-class ECC memory is very low, around 0.1–0.3%, under normal operating conditions.