Brand: Lenovo | Category: Memory (RAM)
SKU: 4X77A77494 | Part #: 4X77A77494 | MPN: 4X77A77494
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The Lenovo TruDDR4 32GB 2Rx4 PC4-25600 ECC RDIMM (Part No. 4X77A77494) is a registered ECC DDR4 memory module engineered specifically for Lenovo ThinkSystem servers. Operating at 3200MHz with a dual-rank, quad-die architecture (2Rx4), the module delivers a balance of high capacity and memory bandwidth suited to demanding server environments. The PC4-25600 designation reflects a peak transfer rate of 25,600 MB/s, while the registered (buffered) design offloads electrical load from the memory controller, enabling higher DIMM populations per channel without signal integrity compromise.
As a Lenovo TruDDR4 module, this RDIMM is validated and qualified through Lenovo's full system-level testing process for ThinkSystem platforms, ensuring interoperability, firmware compatibility, and stable operation across supported server generations including ThinkSystem SR series and ST series rack and tower servers. Error-Correcting Code (ECC) functionality continuously detects and corrects single-bit memory errors in real time, providing the data integrity required for enterprise-grade workloads where silent data corruption is unacceptable.
With a 32GB density per module and support for multi-DIMM configurations, this memory is well-suited to memory-intensive workloads such as in-memory databases, AI/ML inference, large-scale virtualization, and enterprise application servers. Its registered buffered design and ECC protection make it a dependable building block for datacenter infrastructure serving UAE, GCC, EMEA, and APAC enterprise environments.
| Manufacturer | Lenovo |
| Manufacturer Part Number | 4X77A77494 |
| Module Type | RDIMM (Registered / Buffered DIMM) |
| Memory Technology | DDR4 |
| Capacity | 32GB |
| Rank Configuration | 2Rx4 (Dual Rank, x4 organization) |
| Speed Grade | DDR4-3200 |
| PC Speed Rating | PC4-25600 |
| Peak Transfer Rate | 25600 MB/s |
| Error Correction | ECC (Error-Correcting Code) |
| Form Factor | 288-pin RDIMM |
| Voltage | 1.2V |
| CAS Latency | CL22 |
| Operating Temperature | 0°C to 85°C |
| ECC Support | Yes |
| Registered (Buffered) | Yes |
| Compatible Platform | Lenovo ThinkSystem servers (SR and ST series) |
| Series | Lenovo TruDDR4 |
Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.
| Brand | Lenovo |
| Category | Memory (RAM) |
| SKU | 4X77A77494 |
| Part Number | 4X77A77494 |
| Condition | New |
| Manufacturer Part Number | 4X77A77494 |
| Module Type | RDIMM (Registered / Buffered DIMM) |
| Memory Technology | DDR4 |
| Capacity | 32GB |
| Rank Configuration | 2Rx4 (Dual Rank, x4 organization) |
| Speed Grade | DDR4-3200 |
| PC Speed Rating | PC4-25600 |
| Peak Transfer Rate | 25600 MB/s |
| Error Correction | ECC (Error-Correcting Code) |
| Form Factor | 288-pin RDIMM |
| Voltage | 1.2V |
| CAS Latency | CL22 |
| Operating Temperature | 0°C to 85°C |
| ECC Support | Yes |
| Registered (Buffered) | Yes |
| Compatible Platform | Lenovo ThinkSystem servers (SR and ST series) |
| Series | Lenovo TruDDR4 |
Part number 4X77A77494 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.