Cisco 15-12855-01 DDR3 16gb/8500 ECC Reg 1.35V 4rx4

Overview
The Cisco DDR3 16GB 8500 ECC Registered memory module (part number 15-12855-01) delivers high-performance, reliable memory for mission critical servers and networking equipment. Designed for Cisco UCS and other compatible platforms, this 1.35V module provides error-correcting code (ECC) protection and a 4Rx4 architecture that maximizes bandwidth while maintaining low power consumption.

Key Features

• 16GB capacity per module for dense memory configurations
• DDR3-1333 speed (8500 MB/s) for fast data throughput
• ECC (Error Correcting Code) to detect and correct single-bit errors
• Registered (buffered) design for improved signal integrity
• 1.35V low-voltage operation reduces power draw and heat
• 4Rx4 rank organization for optimal performance in multi-processor systems
• Fully compatible with Cisco UCS C-Series, M-Series and other supported servers

Technical Specifications

• Part Number: 15-12855-01
• Memory Type: DDR3 SDRAM
• Capacity: 16GB (16384 MB)
• Speed: 1333 MT/s (8500 MB/s)
• Voltage: 1.35V
• Form Factor: RDIMM 288-pin
• Rank: 4Rx4
• ECC: Yes, with parity checking
• Operating Temperature: 0 to 85 degrees C (non-industrial) or -40 to 85 degrees C (industrial)
• Data Width: 64-bit (plus 8-bit ECC)
• Latency: CL9 (typical)

Applications
This memory module is ideal for data center servers, virtualization hosts, database platforms, and high-performance computing environments where reliability and uptime are paramount. It is also suited for network infrastructure devices, such as Cisco UCS blades, that require robust memory to handle heavy workloads, large memory pools, and intensive I/O operations. By providing ECC protection and a registered design, the module helps prevent data corruption and ensures stable operation in demanding enterprise applications.