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HP PR789AVR 4GB Kit (4x1GB) DDR2-400MHz RDIMM 1Rx4 CL3 Memory
- Kit Capacity: 4GB
- Module Configuration: 4 x 1GB
- Memory Type: DDR2 SDRAM
- Speed: 400MHz (PC2-3200)
- Form Factor: RDIMM (Registered DIMM)
- Rank: 1Rx4 (Single Rank x4)
- CAS Latency: CL3
- ECC: Yes (Registered ECC)
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Product Overview
The HP PR789AVR is a 4GB memory kit comprising four 1GB RDIMM modules. It is identical in specifications to the PR789AV, designed for server use with DDR2-400MHz speed, a 1Rx4 configuration, and CL3 latency. This kit ensures reliable performance and stability for server applications.
Technical Information
| Brand | HP |
| Part Number | PR789AVR |
| Kit Capacity | 4GB |
| Module Size | 1GB |
| Number of Modules | 4 |
Additional Specifications
| Memory Type | DDR2 SDRAM |
| Speed | 400MHz |
| Form Factor | RDIMM |
| Rank | 1Rx4 |
| CAS Latency | CL3 |
Product Description
The HP PR789AVR memory kit offers a total of 4GB of RAM, configured as four 1GB Registered DIMM (RDIMM) modules. This kit is engineered for server and workstation environments where data integrity and system stability are paramount. It operates using DDR2 SDRAM technology at a speed of 400MHz (PC2-3200), providing a reliable performance baseline for various server applications. The RDIMM format is crucial for enterprise-level systems, as it includes onboard registers that buffer data signals. This buffering mechanism reduces the electrical load on the memory controller, allowing for greater scalability in terms of memory capacity and improved signal integrity across multiple modules. The 1Rx4 rank configuration signifies that each module consists of a single rank of memory chips, with each chip having an x4 data width. This specific organization is often chosen for its compatibility and performance characteristics within server motherboards. As with most server-grade memory, the PR789AVR modules are ECC (Error-Correcting Code) enabled. ECC memory is designed to detect and correct common data corruption errors, thereby enhancing system reliability and preventing data loss or system crashes. This feature is indispensable for mission-critical applications and continuous server operations. The CAS Latency (CL) of 3 indicates the number of clock cycles required for the memory module to respond to a column address strobe command, contributing to the overall timing performance.
