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| Product Type | RAM |
|---|---|
| Memory Capacity | 256 MB |
| Memory Technology | |
| RAM Speed | 800 MHz |
| RAM Standard | DDR3-800/PC3-6400 |
| Error Identifying | ECC |
| Quantity of Pins | 184-pin |
| RAM Genre | RIMM |
This 256 MB DDR3-800/PC3-6400 ECC RIMM module is a legacy server and workstation memory solution purpose-built for platforms demanding the 184-pin Rambus interface with full data integrity. Its integrated Error Correcting Code actively detects and corrects single-bit memory errors, making it ideal for mission-critical memory databases and virtualized environments where uninterrupted reliability is non‑negotiable.
1. ECC error correction actively detects and fixes single-bit memory faults, preserving transactional integrity for financial databases and virtualized server fleets.
2. RIMM architecture sustains high per-channel throughput, preventing memory bottlenecks when hosting dense, concurrent workloads on aging enterprise platforms.
3. A 256 MB module granularity allows precise capacity tuning, so legacy servers hit recommended memory limits without expensive over-provisioning.
4. 800 MHz operation lowers read latency in sequential access patterns, keeping response times predictable for latency-critical hosted applications.
5. The 184-pin design enforces proper channel termination with continuity RIMMs, eliminating signal reflections that could destabilize always-on server deployments.
The MR18R1628AF0-CK8 is a specialized server-grade memory module, immediately recognizable by its 184-pin RIMM form factor, ECC support, 800MHz speed, and 256MB capacity. In legacy enterprise environments where availability is non-negotiable, these four characteristics translate directly into operational resilience. Consider a financial trading system still running on a verified platform. The ECC engine actively detects and corrects single-bit errors in real time, preventing a silent memory flip from corrupting a transaction record and causing an audit failure that could cost millions. The 800MHz Rambus channel provides high sustained bandwidth, ensuring that a lightweight, in-memory index for trade matching never stalls under bursts of market data. Meanwhile, the 184-pin RIMM design enforces a continuous, impedance-controlled signal path and a secure mechanical lock, eliminating intermittent contact faults on a factory-floor SCADA server exposed to constant vibration. Even the 256MB density is a deliberate asset: it matches the exact memory footprint of a validated industrial control operating system, avoiding unnecessary power draw and memory scrubbing overhead. For you, this means absolute data integrity and deterministic latency in the dedicated, single-purpose systems your infrastructure depends on.
General Virtualization
To power a hypervisor hosting multiple VMs, you will need to combine many of these 256 MB ECC RDIMMs. Aim for at least 64–128 GB of total memory by populating all available channels with identical modules—roughly 256 to 512 sticks—to maintain balanced memory access and reliable ECC protection.
In-Memory Database
An in-memory dataset demands substantial capacity, often 512 GB or more. With these small modules, you would have to install over 2,000 sticks, exceeding the physical limits of most servers. For any feasible deployment, interleave modules across every memory riser and bank to maximize bandwidth, but consider migrating to higher-density DIMMs instead.
High-Performance Computing
HPC nodes thrive on bandwidth, not sheer capacity. Deploy these modules in a fully symmetric configuration across all memory controllers—for example, 128 sticks per node providing 32 GB—to saturate the DDR3-800 channels. This extreme multi-module setup can reduce per-core memory latency when combined with interleaving, but it is only viable in legacy, custom-engineered clusters.
Rigorously tested server-grade RIMM. Compatible with Dell PowerEdge 1650, 2650, and Precision 530 workstations.
Q: Can I mix this MR18R1628AF0-CK8 with other memory modules of different brands or speeds?
A: Mixing RIMMs of different brands, speeds, or part numbers is not recommended. RDRAM systems require all populated sockets to use identical, matched modules for stable operation; mismatched modules may cause system failure.
Q: Is this memory compatible with my Intel or AMD server platform?
A: This 256MB PC800 ECC RIMM is designed for Intel-based servers and workstations using 184-pin RDRAM chipsets (e.g., i840, i860). Verify chipset support and ECC requirement; not compatible with AMD platforms or standard DDR/DDR2 systems.
Q: What is the recommended DIMM population order for optimal performance?
A: RIMMs must be installed in matched pairs, populating the primary bank first. All empty RIMM slots must hold a continuity module (C-RIMM). Refer to your motherboard manual for specific channel population order.
Q: Does this module support overclocking or XMP profiles?
A: No. This ECC RIMM is a server-grade module operating strictly at JEDEC-specified 800MHz. It does not support overclocking, XMP, or SPD-based tuning. Operating beyond standard frequency may compromise data integrity.
Q: What warranty and typical failure rate can I expect?
A: This module includes a 1-year warranty. Designed for mission-critical RDRAM systems, it delivers high reliability with a typical annualized failure rate (AFR) below 0.5% under normal operating conditions.