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IBM 4490-9117 4GB Kit (4x1GB) DDR-266MHz Micro-DIMM 1Rx8 CL2.5 Memory
- Total Capacity: 4GB (4 x 1GB modules)
- Form Factor: Micro-DIMM
- Memory Type: DDR-266MHz
- Configuration: 1Rx8 (Single Rank, x8 Data Width)
- CAS Latency: CL2.5
- Designed for specific IBM systems
- Compact size for space-constrained devices
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Product Overview
The IBM 4490-9117 is a 4GB memory kit, consisting of four 1GB DDR-266MHz Micro-DIMM modules. This kit is designed for specific IBM systems that require the compact Micro-DIMM form factor. It features a 1Rx8 configuration and CL2.5 latency, providing a memory upgrade for space-constrained computing devices.
Technical Information
| Memory Type | DDR SDRAM |
| Capacity | 4GB Kit (4 x 1GB) |
| Speed | 266MHz |
| Form Factor | Micro-DIMM |
Additional Specifications
| Rank | 1Rx8 |
| CAS Latency | CL2.5 |
| Manufacturer | IBM |
Product Description
The IBM 4490-9117 memory kit provides a total of 4GB of DDR-266MHz RAM, packaged as four 1GB Micro-DIMM modules. This specialized Micro-DIMM form factor is significantly smaller than standard DIMMs and SO-DIMMs, making it suitable for ultra-portable laptops, subnotebooks, and other compact computing devices where space is a critical constraint. The DDR-266MHz speed is characteristic of the systems for which this memory is intended, offering sufficient bandwidth for their operational requirements. Each 1GB module in this kit is configured as 1Rx8, meaning it is single-ranked with an x8 data width. This configuration is typical for memory modules of this capacity and speed, providing a standard interface for the system's memory controller. The CAS latency (CL) of 2.5 clock cycles is a key timing parameter that affects the memory's responsiveness, defining the delay between a read command and data availability. This 4GB Micro-DIMM kit is designed for compatibility with specific IBM systems that require this unique memory type. Users must verify that their device supports the 4490-9117 part number or its exact specifications to ensure proper installation and operation. It serves as an effective upgrade or replacement option for extending the usability and performance of these specialized IBM portable computing platforms.
