Brand: Lenovo | Category: Memory (RAM)
SKU: 4X77A94073 | Part #: 4X77A94073 | MPN: 4X77A94073
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The Lenovo TruDDR5 4800MHz ECC RDIMM 128GB (2Rx4), part number 4X77A94073, is a high-capacity registered DDR5 memory module engineered specifically for Lenovo ThinkSystem servers. Operating at 4800MHz with a dual-rank, quad-die (2Rx4) organization, this module delivers substantially higher bandwidth and improved power efficiency compared to DDR4 predecessors, leveraging the on-die ECC and improved signal integrity architecture inherent to the DDR5 standard.
As a Registered DIMM (RDIMM), the module incorporates a register component that buffers command and address signals, enabling greater memory capacity scalability and electrical stability in multi-DIMM-per-channel configurations. The 128GB density is achieved through a x4 device width configuration across dual ranks, making it well-suited for memory-intensive enterprise workloads that demand both high capacity and reliable data integrity under sustained load. Error-correcting code (ECC) functionality provides hardware-level single-bit error correction and multi-bit error detection, a critical attribute for mission-critical deployments.
Validated under Lenovo's TruDDR program, this module undergoes rigorous compatibility and reliability testing against Lenovo ThinkSystem server platforms, ensuring predictable performance and stability in production environments. It is positioned for deployment in enterprise data centers, AI inferencing and training infrastructure, in-memory database platforms, and virtualization hosts where high per-DIMM capacity, DDR5 bandwidth, and ECC-grade reliability are non-negotiable requirements.
| Manufacturer | Lenovo |
| Manufacturer Part Number | 4X77A94073 |
| Module Type | RDIMM (Registered DIMM) |
| DDR Generation | DDR5 |
| Capacity | 128GB |
| Speed | 4800MHz |
| Rank Configuration | 2Rx4 (Dual Rank, x4 device width) |
| Error Correction | ECC (Error-Correcting Code) |
| Form Factor | 288-pin DIMM |
| Voltage | 1.1V |
| On-Die ECC | Yes (DDR5 native on-die ECC) |
| CAS Latency | CL40 |
| Module Height | Low Profile (31.25mm) |
| Compatible Platform | Lenovo ThinkSystem servers with DDR5-capable Intel Xeon Scalable (4th Gen and later) processors |
| Memory Bus Width | 64-bit data bus with ECC |
| Operating Temperature | 0°C to 85°C (standard operating range) |
| Product Line | Lenovo TruDDR5 |
Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.
| Brand | Lenovo |
| Category | Memory (RAM) |
| SKU | 4X77A94073 |
| Part Number | 4X77A94073 |
| Condition | New |
| Manufacturer Part Number | 4X77A94073 |
| Module Type | RDIMM (Registered DIMM) |
| DDR Generation | DDR5 |
| Capacity | 128GB |
| Speed | 4800MHz |
| Rank Configuration | 2Rx4 (Dual Rank, x4 device width) |
| Error Correction | ECC (Error-Correcting Code) |
| Form Factor | 288-pin DIMM |
| Voltage | 1.1V |
| On-Die ECC | Yes (DDR5 native on-die ECC) |
| CAS Latency | CL40 |
| Module Height | Low Profile (31.25mm) |
| Compatible Platform | Lenovo ThinkSystem servers with DDR5-capable Intel Xeon Scalable (4th Gen and later) processors |
| Memory Bus Width | 64-bit data bus with ECC |
| Operating Temperature | 0°C to 85°C (standard operating range) |
| Product Line | Lenovo TruDDR5 |
Part number 4X77A94073 is qualified for Lenovo 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.
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.
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.