General

Engineer's Note

Designed for legacy server platforms, this 1GB DDR2-667 FB-DIMM utilizes Fully Buffered architecture and ECC to ensure signal integrity and data reliability in memory-intensive, multi-rank configurations. Its dual-rank x8 organization and CL5 latency make it well-suited for virtualization and small in-memory database workloads where error-free operation is critical.

Technical Specs & Insights

1. Fully Buffered DIMM architecture isolates the memory controller from electrical loading, enabling densely populated server racks to scale capacity without compromising signal integrity.
2. ECC error correction actively detects and corrects single-bit memory faults, preserving transactional accuracy in virtualized environments where data corruption is unacceptable.
3. The buffered signal path retimes and amplifies commands across multiple DIMMs, sustaining stable throughput for memory-intensive workloads like real-time analytics.
4. Dual-rank interleaving increases bank-level parallelism, reducing idle cycles and maintaining consistent bandwidth under the high concurrency of multi-tenant cloud hosts.
5. Tight column access latency shortens the critical path for data fetches, delivering faster response times that directly benefit latency-sensitive enterprise database operations.

Why These Specs Matter

When you deploy the Samsung M395T2953CZ4-CE61, you are not simply inserting a 1GB DDR2 module into a server—you are fortifying the foundation of your data center's reliability. This FB-DIMM leverages Fully Buffered architecture to decouple the memory bus from the DRAM chips, enabling massive capacity scaling without signal degradation. In a dense virtualization cluster running dozens of VMs, that means you can populate all 16 or 24 DIMM slots without compromising stability, keeping every guest responsive. Its integrated ECC engine continuously scans and corrects single-bit errors, a non-negotiable safeguard when a silent bit-flip in a financial database or an in-memory cache like Redis could otherwise corrupt transactions or trigger application crashes. The dual-rank x8 organization further interleaves banks to amplify sustainable bandwidth, so your hypervisor and memory-intensive databases experience smoother, stutter-free throughput during peak loads. Together, these features transform this module into a silent insurance policy: it absorbs electrical noise, deflects data corruption, and maintains the steady-state performance that enterprise workloads demand around the clock.

Endurance & Reliability

General Virtualization
This FB-DIMM module is designed for legacy server platforms, providing the ECC protection essential for virtualized environments. For general virtualization on DDR2-era systems, populate modules in matched sets across all memory channels, typically aiming for balanced total capacity (16–32 GB with these 1 GB sticks) to avoid memory contention. Prioritize fully populating each channel with identical DIMMs to maintain stable, error-corrected memory performance under multiple guest OS loads.

In-Memory Database
ECC and fully buffered architecture make this memory suitable for older servers running in-memory databases, where data integrity is paramount. Maximize capacity by filling all available FB-DIMM slots with identical 1 GB modules, as these platforms often require large, contiguous memory spaces (e.g., 32–64 GB). Configure memory sparing or mirroring in the BIOS if available, trading some capacity for higher resilience against uncorrectable errors in critical dataset operations.

High-Performance Computing (HPC)
For HPC clusters built on legacy DDR2 infrastructure, fully buffered DIMMs provide the signal integrity needed for dense node configurations. Install modules in sets that match the server’s interleaving scheme—typically four or eight identical 1 GB FB-DIMMs per node to maximize bandwidth through multi-channel interleaving. Ensure all DIMMs share identical rank and speed to avoid timing conflicts during parallel computational workloads, and leverage ECC to guard against silent data corruption in long-running simulations.

Verified Compatibility

Rigorously tested server FB-DIMM, compatible with Dell PowerEdge 2900/2950, HP DL380 G5, IBM x3650, and more.

FAQ