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IBM 4490-9118 4GB Kit (4x1GB) DDR-266MHz Micro-DIMM 1Rx8 CL2.5 Memory
- Capacity: 4GB Kit (4x 1GB modules)
- Type: DDR SDRAM
- Form Factor: Micro-DIMM
- Speed: 266MHz (PC-2100)
- Organization: 1R x 8 (per module)
- Latency: CL2.5 (CAS Latency 2.5)
- Voltage: 2.5V (typical for DDR)
- Application: IBM systems, small form factor devices
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Product Overview
The IBM 4490-9118 is a 4GB memory kit, comprising four 1GB Micro-DIMM modules, designed for specific IBM systems or other compact devices. Each module operates at 266MHz with a 1 rank x 8 bits organization and CL2.5 latency.
Technical Information
| Capacity | 4GB Kit (4x1GB) |
| Memory Type | DDR SDRAM |
| Form Factor | Micro-DIMM |
| Speed | 266MHz |
Additional Specifications
| CAS Latency | CL2.5 |
| Organization | 1R x 8 |
| Model | 4490-9118 |
| Brand | IBM |
Product Description
This IBM 4490-9118 memory kit provides a total of 4GB of RAM, distributed across four individual 1GB Micro-DIMM modules. Micro-DIMMs are a specialized, compact form factor used in systems where space is extremely limited, such as certain IBM servers, industrial PCs, or specific laptop models. The memory technology is DDR SDRAM, operating at a frequency of 266MHz, which corresponds to a PC-2100 data transfer rate. This speed was common for DDR memory in the early to mid-2000s. Each 1GB module within the kit features a 1R x 8 organization, meaning it uses a single rank of memory chips, each with an 8-bit data width. The CAS Latency (CL) is set at 2.5, indicating the number of clock cycles delay between the memory controller's request and the data being available. This timing parameter, along with the clock speed, influences the module's performance characteristics. Operating at a standard voltage of 2.5V, these Micro-DIMMs are designed for compatibility with specific system boards that require this form factor and DDR memory type. It is essential to verify system compatibility before installation, as Micro-DIMMs are physically distinct from standard DIMMs and SO-DIMMs and cannot be interchanged. This kit is intended for upgrades or replacements in systems that explicitly support 1GB DDR 266MHz Micro-DIMM modules.
