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IBM 53P1639 2GB DDR-266MHz Micro-DIMM 2Rx8 CL2.5 Memory
- Capacity: 2GB
- Memory Type: DDR
- Speed: 266MHz
- Form Factor: Micro-DIMM
- Configuration: 2Rx8 (Dual Rank, x8 organization)
- CAS Latency: CL2.5
- Designed for specific IBM systems requiring Micro-DIMM memory
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Product Overview
This IBM 53P1639 is a 2GB DDR-266MHz Micro-DIMM memory module, identical in specifications to the 12R9255. It is designed for systems that utilize the Micro-DIMM form factor and require reliable memory upgrades. With a speed of 266MHz and CL2.5 latency, it offers a balance of performance and compatibility for compatible IBM systems.
Technical Information
| Capacity | 2GB |
| Memory Type | DDR |
| Speed | 266MHz |
Additional Specifications
| Form Factor | Micro-DIMM |
| Rank | 2Rx8 |
| CAS Latency | CL2.5 |
Product Description
The IBM 53P1639 is a specialized memory module engineered to meet the demands of certain IBM server and workstation platforms that employ the compact Micro-DIMM form factor. This 2GB module operates at a DDR-266MHz speed, providing a foundational level of memory performance suitable for a range of business applications and multitasking scenarios. Its 2Rx8 configuration indicates a dual-rank design with an x8 data width per rank, which can influence memory access patterns and overall system responsiveness in compatible architectures. The module's CAS Latency (CL) of 2.5 is a critical timing parameter that dictates the number of clock cycles required to access data from the memory. A lower CL value generally translates to faster data retrieval. This specific latency setting is optimized for compatibility and performance within the intended IBM hardware ecosystem. The DDR (Double Data Rate) technology allows for data transfer on both the rising and falling edges of the clock signal, effectively doubling the data throughput compared to traditional SDR SDRAM. As a Micro-DIMM, this memory is physically smaller than standard DIMMs, making it ideal for space-constrained devices such as certain laptops, small form factor PCs, or specialized industrial computing systems. The 53P1639 ensures that users can expand or replace memory in these specific environments, maintaining system stability and potentially improving performance for memory-intensive tasks. It is crucial to verify system compatibility before installation to ensure optimal operation and to avoid potential hardware conflicts.

