
Safe checkout
Secure payments
Fast dispatch
1–2 day handling
Free shipping
U.S. ground
Warranty & RMA
Support after delivery
9406-4444 - IBM 1GB Kit (4 X 256MB) DDR-266MHz PC2100 ECC Registered CL2.5 208-Pin DIMM Memory
- 1GB total memory capacity
- DDR-266MHz speed
- Micro-DIMM form factor
- 2Rx8 configuration (Dual Rank, 8-bit)
- CL2.5 latency
- Designed for compatible IBM systems
- Enhances system performance and multitasking
9406-4444 isn't on our shelf today — we source it to order. Request a quote and we'll confirm price and lead time within one business day.
Key specifications
See full specs ↓- Capacity
- 1GB Kit
- Memory Type
- DDR-266MHz Micro-DIMM
- Configuration
- 2Rx8
- Latency
- CL2.5
Product details
This IBM 9406-4444 is a 1GB memory kit featuring DDR-266MHz Micro-DIMM modules. It is configured as 2Rx8, indicating dual rank and 8-bit prefetch, with a CL2.5 latency, suitable for specific IBM systems requiring compact memory modules.
Technical Information
| Capacity | 1GB Kit |
| Memory Type | DDR-266MHz Micro-DIMM |
Additional Specifications
| Configuration | 2Rx8 |
| Latency | CL2.5 |
Description
The IBM 9406-4444 memory kit provides a 1GB upgrade designed to enhance the performance of compatible IBM systems. This kit utilizes DDR-266MHz technology, offering a balance of speed and efficiency for memory-intensive tasks. The Micro-DIMM form factor is specifically chosen for its compact size, making it suitable for systems with limited space, such as certain laptops or specialized IBM hardware where standard DIMMs may not fit. The memory modules are configured as 2Rx8, which signifies dual rank and an 8-bit prefetch architecture. This configuration can offer performance benefits by allowing the memory controller to access different ranks of memory independently, potentially improving throughput. The CAS Latency (CL) is set at 2.5, which is a measure of the delay between the memory controller requesting data and the data being available. A lower CL value generally indicates faster response times. This 1GB kit is intended to boost the overall computing power of supported IBM machines, enabling smoother multitasking, faster application loading, and improved responsiveness in demanding workloads. It is crucial to ensure compatibility with the specific IBM system model before installation, as memory upgrades are hardware-specific. The 9406-4444 represents a targeted solution for memory expansion in select IBM platforms.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
Buying 10+ units?
Get volume pricing and availability for 9406-4444.



