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HP CB423A-R 256MB DDR2-533MHz PC2-4200 non-ECC Unbuffered CL4 240-Pin UDIMM 1.8V Single Rank Memory ...
- Capacity: 256MB
- Memory Type: DDR2
- Speed: 533MHz (PC2-4200)
- Form Factor: 240-Pin UDIMM
- ECC: Non-ECC
- Buffering: Unbuffered
- Latency: CL4
- Voltage: 1.8V
- Rank: Single Rank
- Manufacturer: HP
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Product Overview
This HP memory module is a 256MB DDR2-533MHz PC2-4200 UDIMM. It is designed for non-ECC applications and operates unbuffered, with a CL4 latency. The module requires 1.8V and is a Single Rank configuration.
Technical Information
| Capacity | 256MB |
| Memory Type | DDR2 |
| Speed | 533MHz |
| Module Type | UDIMM |
| ECC | Non-ECC |
Additional Specifications
| Buffering | Unbuffered |
| CAS Latency | CL4 |
| Voltage | 1.8V |
| Rank | Single Rank |
Product Description
The HP CB423A-R is a 256MB memory module designed for older computer systems that utilize DDR2 technology. It operates at a speed of 533MHz, corresponding to a PC2-4200 data transfer rate. This module is a 240-pin Unbuffered DIMM (UDIMM), a standard form factor for desktop and some server motherboards of that era. The 'Unbuffered' nature means it directly interfaces with the memory controller, which can offer lower latency compared to buffered modules. This memory module is Non-ECC, meaning it lacks error-checking capabilities, making it suitable for general-purpose computing where data integrity is not as critical as in server environments. It operates at a voltage of 1.8V and has a CAS Latency (CL) of 4, indicating a relatively fast response time for memory operations. The Single Rank configuration means the memory chips are placed on one side of the PCB, which is typical for lower-density modules. As an HP branded component, it is designed to meet specific compatibility and performance standards for HP hardware. The SKU CB423A-R precisely identifies this 256MB DDR2-533MHz module. While 256MB is a modest amount of RAM by modern standards, it was sufficient for many applications and operating systems during the DDR2 era, and this module serves as a replacement or upgrade component for compatible systems.
