| Type | Server Memory Module |
| Form Factor | RDIMM |
| Memory Technology | DDR5 SDRAM |
| Capacity | 128 GB |
| Rank | 4Rx4 |
| DRAM Density | 16 Gb |
| Memory Speed | 4800 MHz |
| Module Voltage | 1.1 V |
| Buffered/Registered | Registered (Buffered) |
| ECC Support | Yes |
| Power Requirements | Standard DDR5 power (approx. 1.1V) |
| Intended Use | Servers and Data-Center Applications |
Cisco 128GB DDR5-4800 RDIMM 4Rx4 (16Gb)

Key Benefits
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- Supports expansion in enterprise servers needing large memory capacities with 128GB per module
- DDR5 and 4800 MHz speed dramatically enhance system responsiveness and virtualization performance
- TAA compliance makes it suitable for public sector and government procurement
Product Overview
The Cisco 128GB DDR5-4800 RDIMM 4Rx4 (16Gb) is a robust server memory module engineered for high-performance computing environments. With DDR5 DRAM technology operating at 4800 MHz, it ensures swift data throughput and better responsiveness. Featuring a 128GB capacity and 4Rx4 rank, it supports memory-intensive tasks like virtualization and big data processing. As a registered DIMM, it offers reliability in mission-critical deployments and adheres to TAA compliance—ideal for government and public sector applications.
Specifications
Product Overview
Wireless Features
Compliance & Origin
| Country of Origin | Korea, Republic of |
| TAA Compliant | Yes |
| RoHS Compliance | Yes |
| JEDEC Compliance | Yes |
| CE Certification | Yes |
| UL Certified | Yes |
| Halogen Free | Yes |
Advanced Security Features
| On-Die ECC | Yes |
| Data Bus Inversion (DBI) | Yes |
| CRC for Data Integrity | Yes |
| Sideband ECC | Yes |
| Chipkill Support | Yes |
| Secure Write Protection | Yes (Server Platform Dependent) |
Interfaces
| Interface Type | 288-pin DIMM |
| Bus Type | PC5-38400 |
| Data Transfer Rate | 38.4 GB/s |
Physical & Environmental
| Dimensions (W x H) | 133.35 mm × 31.25 mm |
| Operating Temperature Range | 0°C to 85°C (Ambient) |
| Storage Temperature Range | -55°C to 100°C |
| Weight | Approx. 25–30 g |
| Cooling Requirements | Standard airflow required for server DIMM slots |
| Component Height | Standard – ≈31.25 mm |