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IBM 7028-4490 4GB Kit (4x1GB) DDR-266MHz Micro-DIMM 1Rx8 CL2.5 Memory
- IBM Memory Kit
- Part Number: 7028-4490
- Total Capacity: 4GB
- Configuration: 4 x 1GB modules
- Type: DDR
- Speed: 266MHz
- Form Factor: Micro-DIMM
- Rank: 1Rx8
- CAS Latency: CL2.5
- Designed for specific IBM systems
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Product Overview
The IBM 7028-4490 is a 4GB memory kit consisting of four 1GB DDR-266MHz Micro-DIMM modules. This memory is designed for specific IBM systems that utilize the compact Micro-DIMM form factor, offering a total capacity of 4GB for enhanced system performance.
Technical Information
| SKU | 7028-4490 |
| Product Type | Memory Kit |
| Brand | IBM |
| Total Capacity | 4GB |
| Module Configuration | 4 x 1GB |
Additional Specifications
| Memory Type | DDR |
| Speed | 266MHz |
| Form Factor | Micro-DIMM |
| Rank | 1Rx8 |
| CAS Latency | 2.5 |
Product Description
The IBM 7028-4490 is a memory upgrade kit specifically designed for IBM systems that require the compact Micro-DIMM form factor. This kit provides a total of 4GB of RAM, distributed across four individual 1GB modules. The memory operates at DDR-266MHz, which corresponds to a clock speed of 133MHz, and features a CAS Latency (CL) of 2.5, indicating its timing characteristics. The Micro-DIMM form factor is significantly smaller than standard DIMMs or SO-DIMMs, making it suitable for highly space-constrained devices such as certain laptops, embedded systems, or specialized IBM platforms. The 1Rx8 designation refers to the memory chip organization: '1R' for single-rank and 'x8' indicating that each memory chip has an 8-bit data width. This configuration is common for DDR memory modules. Upgrading the memory with this kit can improve the overall performance of compatible IBM systems by allowing them to handle more applications simultaneously, process larger datasets, and operate more efficiently. It is essential to ensure system compatibility before purchasing, as Micro-DIMMs are not interchangeable with other DIMM types.
