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IBM 12R7634 4GB DDR-266MHz Micro-DIMM 4Rx8 CL2.5 Memory
- Capacity: 4GB
- Memory Type: DDR SDRAM
- Speed: 266MHz (PC2100)
- Form Factor: Micro-DIMM
- Pin Count: 200-pin
- CAS Latency: CL2.5
- Configuration: 4Rx8 (Quad Rank, x8 data width)
- Designed for specific portable systems
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Product Overview
The IBM 12R7634 is a 4GB DDR-266MHz Micro-DIMM memory module. It is designed for specific portable devices and systems that utilize the compact Micro-DIMM form factor and DDR-266 speed.
Technical Information
| Memory Capacity | 4GB |
| Memory Type | DDR SDRAM |
| Memory Speed | 266MHz |
| Form Factor | Micro-DIMM |
Additional Specifications
| Pins | 200-pin |
| CAS Latency | CL2.5 |
| Rank | 4Rx8 |
Product Description
The IBM 12R7634 is a specialized memory module with a capacity of 4GB, utilizing DDR SDRAM technology. It operates at a speed of 266MHz, which corresponds to the PC2100 standard, providing a balance between performance and power efficiency suitable for its intended applications. The module features a CAS Latency (CL) of 2.5, indicating the number of clock cycles required for the memory controller to access a specific column in a row once the row has been opened. The critical distinguishing feature of this memory module is its Micro-DIMM form factor. Micro-DIMMs are significantly smaller than standard SO-DIMMs or DIMMs, making them ideal for ultra-portable devices such as certain laptops, subnotebooks, or other compact computing systems where space is at a premium. The 200-pin configuration is typical for DDR memory in this form factor. The 4Rx8 designation indicates a quad-rank configuration with an x8 data width per rank. This arrangement can affect memory performance and compatibility, particularly in systems that are sensitive to memory interleaving and rank configurations. This specific IBM part number suggests it was designed for integration into particular IBM or compatible portable computing platforms that require this precise memory specification.
