Type | System Memory Module |
Memory Type | DDR4 SDRAM |
Module Type | UDIMM |
Capacity | 32 GB |
Rank | 2Rx8 |
TruDDR4 Compatibility | Yes |
Manufacturer Part Number | 4X77A77496 |
UPC | 889488592029 |
Memory Technology | TruDDR4 ECC UDIMM |
Voltage | 1.2 V |
Chip Organization | X8 |
Weight | Approx. 20g |
Lenovo 32GB TruDDR4 3200MHz ECC UDIMM Memory Module



Key Benefits

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- Enhanced throughput with 3200 MHz speed supports demanding enterprise workloads.
- ECC technology ensures high data accuracy and minimized downtime, critical for business continuity.
- Optimized compatibility and performance with Lenovo ThinkSystem infrastructure validated by TruDDR4.
Product Overview
The Lenovo ThinkSystem 32GB TruDDR4 ECC UDIMM (4X77A77496) is engineered to provide exceptional memory performance and reliability for enterprise-class computing. Designed to operate at a memory speed of 3200 MHz and using the ECC (Error-Correcting Code) technology, this DRAM-based UDIMM is purpose-built for critical workloads where data accuracy and system uptime are paramount. Running at only 1.2 volts, it balances speed and power efficiency to reduce overall system heat and energy consumption.
This module includes 32GB of DDR4 TRUDDR4 memory in a 2Rx8 configuration, suitable for systems requiring high capacity without compromising reliability. Being part of the TruDDR4 family, it undergoes strict qualification and testing to integrate seamlessly with Lenovo ThinkSystem servers, ensuring optimal performance and compatibility.
Whether used in virtualization, big data processing, or business-critical applications, the Lenovo ECC UDIMM provides IT professionals with a scalable and serviceable memory solution. The ECC function adds an essential layer of fault-tolerance to prevent and correct memory errors, leading to increased system stability and data integrity across workloads.
Specifications
Product Overview
Physical & Environmental
Form Factor | UDIMM |
Module Dimensions (W x H) | 133.35 mm x 31.25 mm |
Operating Temperature Range | 0°C to 85°C |
Storage Temperature Range | -55°C to 100°C |
Relative Humidity (operating) | 10% to 85% (non-condensing) |
Relative Humidity (non-operating) | 5% to 95% (non-condensing) |
Cloud Management & Licensing
Lenovo Server Compatibility | ThinkSystem Servers |
Firmware Authentication | TruDDR4 Signature Authentication |
Interfaces
Interface | 288-pin DIMM |
Data Transfer Rate | PC4-25600 |
Bus Type | DDR4 SDRAM |
Compliance & Origin
ECC Support | Yes |
RoHS Compliant | Yes |
JEDEC Compliant | Yes |
Country of Origin | Varies by manufacturing location |
TAA Compliant | |
Halogen Free | Yes |
Advanced Security Features
Error Correction | ECC (Error-Correcting Code) |
Fault Tolerance | Yes |
Memory Reliability Features | On-die ECC, parity detection |