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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 32 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2 V |
| RAM Speed | 2933 MHz |
| RAM Standard | DDR4-2933/PC4-23400 |
| Error Identifying | ECC |
| Signal Type | Registered |
| Column Access Strobe (CAS) | CL21 |
| Rank | Dual Rank x4 |
| Quantity of Pins | 288-pin |
| RAM Genre | RDIMM |
Designed as a server-grade RDIMM, this Samsung M393A4K40CB2-CVFBY module is ideal for virtualization hosts and in-memory databases where data integrity is paramount. Its registered ECC architecture with Dual Rank x4 organization ensures stable signal integrity under heavy loads, while 2933 MT/s at CL21 delivers consistent bandwidth for latency-sensitive enterprise workloads.
1. The 32GB capacity per module enables dense memory configurations, allowing virtualization hosts to pack more VMs per physical server without sacrificing memory headroom.
2. 2933 MT/s speed elevates memory bandwidth, directly reducing data retrieval times for memory-hungry database engines and real-time analytics platforms.
3. ECC error correction silently detects and fixes single-bit flips, a non-negotiable safeguard for financial transactions and long-running scientific computations where data integrity is paramount.
4. Registered signal type buffers command and address lines, stabilizing signal integrity across fully populated server boards to maintain uptime in large-scale deployments.
5. Dual Rank x4 organization leverages bank interleaving to saturate memory channels, boosting effective throughput under heavy virtualization and multi-tenant workloads.
The M393A4K40CB2-CVFBY is a server-grade 32 GB DDR4-2933 Registered DIMM built to eliminate the silent data corruption and downtime that haunt data centers. Its ECC technology continuously detects and corrects single-bit memory errors—a critical safeguard when cosmic radiation flips a bit inside a virtualized host running dozens of VMs. Without ECC, a flipped bit can crash a hypervisor or silently poison a financial transaction log, turning a minor hardware event into a major business incident. The Registered signal buffer embedded in this RDIMM stabilizes command and address signals across high-density memory channels, allowing a virtualization cluster to pack 512 GB or more per node without signal degradation; this means you can run dense multi-tenant environments with predictable, stall-free performance.
The dual-rank x4 organization, paired with a 2933 MT/s data rate and CL21 latency, delivers the sustained bandwidth that in-memory databases like SAP HANA or Redis demand. When a real-time analytics engine scans tens of millions of rows, the interleaved access across two ranks hides precharge cycles and keeps the data pipeline saturated, cutting query response times by double-digit percentages compared to single-rank buffers. In practice, this translates to dashboards that refresh instantly and algorithmic trading platforms that act on market data without a microsecond of hesitation. For infrastructure teams that measure reliability in “nines” and performance in transactions per second, this Samsung DDR4 RDIMM is not a commodity—it is the foundation of consistent, error-free compute at scale.
Memory Type Identification
The module is a DDR4-2933 Registered ECC DIMM (RDIMM) with 32 GB capacity, dual-rank x4 organization, and CL21 latency. Its ECC, registered signaling, and 288-pin form factor are definitive for server-class platforms, not desktop or laptop use.
General Virtualization
Deploy identical modules in multiples of 8 or 16 per server to populate all memory channels evenly. A typical 2-socket virtualization host benefits from 16 × 32 GB RDIMMs (512 GB total) to run dozens of VMs without memory contention, while leaving headroom for live migration and failover. Balance capacity per NUMA node for predictable latency.
In-Memory Database
Maximize capacity and bandwidth by filling every DIMM slot with identical 32 GB RDIMMs, often reaching 1 TB or more per node. The low 1.2 V and ECC protection guard against data corruption during sustained in-memory workloads like Redis or SAP HANA. Use dual-rank x4 modules to achieve optimal rank interleaving and throughput.
High-Performance Computing
Configure all memory channels symmetrically with one or two DIMMs per channel to prevent unbalanced bandwidth. For memory-bandwidth-bound HPC jobs, 12 or 16 identical 32 GB RDIMMs provide 384–512 GB of RAM while sustaining near-peak 2933 MT/s speed. Registered ECC ensures silent data errors do not compromise long-running simulations.
Rigorously tested, verified compatible with Dell PowerEdge R750, HPE DL380 Gen10, Lenovo SR650, and other enterprise servers.
Q: Can I mix this M393A4K40CB2-CVFBY with other memory modules of different brands or speeds?
A: Mixing RDIMMs of different brands, speeds, or ranks is strongly discouraged in server environments due to signal integrity risks and potential system instability. For guaranteed compatibility, always pair with identical Samsung M393A4K40CB2-CVFBY modules.
Q: Is this memory compatible with my system?
A: This Samsung 32GB DDR4-2933 Registered ECC module is compatible with Intel Xeon Scalable (Skylake/Cascade Lake) and AMD EPYC platforms that support 288-pin RDIMMs. Please consult your server board's QVL to confirm support for PC4-23400 at 2933MT/s.
Q: What is the recommended DIMM population order for optimal performance?
A: Populate DIMMs in matched sets across the platform's memory channels, typically starting with the blue slots farthest from each CPU. Follow the mirroring scheme in your server manual to ensure balanced interleaving and full memory bandwidth.
Q: Does this module support overclocking or XMP profiles?
A: No. This JEDEC-compliant ECC RDIMM operates solely at its rated DDR4-2933 with CL21 timings. It has no XMP profiles or overclocking support, as it is engineered for 24/7 enterprise reliability and data integrity.
Q: What warranty and typical failure rate can I expect?
A: This module includes a one-year warranty. Samsung enterprise RDIMMs exhibit an industry-leading annualized failure rate typically below 0.3% under proper thermal and voltage conditions. Extended coverage options may be available upon request.