Crucial 128GB DDR5-4800 ECC MRDIMM CL40 1.1V (Multiplexed Rank)
Brand: Crucial | Category: Memory (RAM)
SKU: CT128G48C40MR5 | Part #: CT128G48C40MR5 | MPN: CT128G48C40MR5
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About the Crucial 128GB DDR5-4800 ECC MRDIMM CL40 1.1V (Multiplexed Rank)
DDR5-4800 at 128GB capacity delivers the speed and density enterprise servers demand. The Crucial 128GB DDR5-4800 ECC MRDIMM CL40 1.1V (part number CT128G48C40MR5) is a registered, buffered memory module engineered for high-performance server environments where reliability and throughput are non-negotiable. Built on the DDR5 architecture and operating at 4800 MT/s, this module combines cutting-edge speed with Crucial's proven quality to support demanding workloads without compromise.
This Crucial module features on-die error-correcting code (ECC) as part of the DDR5 native specification, protecting critical data integrity across transaction-intensive applications. The 288-pin MRDIMM form factor with multiplexed rank architecture maximizes memory density per socket while the 1.1V operating voltage aligns with JEDEC DDR5 standards. With CAS latency of CL40 and an operating temperature range of 0°C to 85°C, the CT128G48C40MR5 is built to sustain continuous operation in demanding data center environments. For IT procurement teams and infrastructure architects evaluating next-generation memory solutions, this module represents a direct upgrade path for systems requiring both capacity and performance.
Enterprise Deployment Scenarios
- High-frequency trading and financial analytics platforms requiring minimal latency and maximum per-socket memory density
- Virtualization hypervisors managing hundreds of guest instances with strict data integrity requirements
- In-memory database clusters and real-time analytics engines processing large datasets at scale
- Machine learning inference and model serving infrastructures where ECC protection safeguards trained model weights
- Mission-critical application servers where registered ECC memory prevents silent data corruption across 24/7 operations
Contact Omnixon Global to request a quotation for the Crucial CT128G48C40MR5 and explore volume pricing tailored to your enterprise deployment timeline.
Technical Specifications
| Brand | Crucial |
| Category | Memory (RAM) |
| SKU | CT128G48C40MR5 |
| Part Number | CT128G48C40MR5 |
| Condition | New |
| Manufacturer Part Number | CT128G48C40MR5 |
| Capacity | 128GB |
| Memory Type | DDR5 |
| Form Factor | MRDIMM (Multiplexed Rank DIMM) |
| Speed Grade | DDR5-4800 |
| Data Transfer Rate | 4800 MT/s |
| CAS Latency | 40 (CL40) |
| Voltage | 1.1V |
| Error Correction | ECC (Error-Correcting Code) |
| On-Die ECC | Yes (DDR5 native) |
| Rank Architecture | Multiplexed Rank (MRDIMM buffer) |
| ECC Type | Registered / Buffered with ECC |
| Pin Count | 288-pin |
| PCB Layers | Not publicly specified |
| Operating Temperature | 0°C to 85°C (standard JEDEC server module range) |
| Compliance | JEDEC DDR5 MRDIMM specification |
Frequently Asked Questions about Crucial 128GB DDR5-4800 ECC MRDIMM CL40 1.1V (Multiplexed Rank)
Is the Crucial 128GB DDR5-4800 ECC MRDIMM CL40 1.1V (Multiplexed Rank) compatible with my server?
Part number CT128G48C40MR5 is qualified for Crucial servers that list compatible memory in their QVL. We verify QVL match before quoting — share your server model in the RFQ and our pre-sales engineers confirm fit, recommended population pattern, and total capacity supported.
What support applies to this memory module?
Full manufacturer support (typically 3 years, RDIMM/LRDIMM SKUs often lifetime against manufacturing defects). All product is sourced through distribution so support registers cleanly under your company name.
How do I request a quote?
Submit the RFQ form on this page with your quantity and destination country. Our pre-sales team responds with a vendor-confirmed quote, availability, and matching server-QVL confirmation if needed.