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HP 8155101-B21 64GB DDR4-2666MHz LRDIMM 4Rx4 CL19 Memory
- 64GB capacity
- DDR4 SDRAM technology
- Speed: 2666MHz (PC4-21300)
- Form Factor: LRDIMM (Load-Reduced DIMM)
- Rank Configuration: 4Rx4 (Quad Rank x4)
- CAS Latency: CL19
- ECC (Error-Correcting Code) support
- Designed for servers and enterprise environments
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Product Overview
The HP 8155101-B21 is a 64GB DDR4-2666MHz Load-Reduced DIMM (LRDIMM) memory module. It is designed for servers and high-performance workstations requiring significant memory capacity and speed. The 4Rx4 configuration indicates four ranks of memory chips per module, offering high density and performance.
Technical Information
| Capacity | 64GB |
| Memory Type | DDR4 SDRAM |
| Speed | 2666MHz |
| Form Factor | LRDIMM |
| Rank | 4Rx4 |
Additional Specifications
| CAS Latency | CL19 |
| Part Number | 8155101-B21 |
| Brand | HP |
| ECC | Yes |
Product Description
The HP 8155101-B21 is a high-capacity 64GB memory module engineered for demanding server and workstation environments. Utilizing DDR4 SDRAM technology, it operates at a speed of 2666MHz, identified by the PC4-21300 designation, providing substantial bandwidth for data-intensive applications. This module is specifically a Load-Reduced DIMM (LRDIMM), which incorporates an اسرائیلی buffer chip to reduce the electrical load on the memory controller. This allows for higher memory capacities and more memory modules to be installed in a system, crucial for enterprise-grade computing. The 4Rx4 configuration signifies that the module is quad-rank, with each rank utilizing x4 (4-bit) data width memory chips. This multi-rank design enhances performance by allowing the memory controller to access different ranks concurrently, improving efficiency and throughput. The CAS Latency (CL) is rated at 19, indicating the number of clock cycles required for the memory to respond to a column address command. This module also features Error-Correcting Code (ECC) functionality, which detects and corrects single-bit errors, ensuring data integrity and system stability – a critical requirement for mission-critical applications. This HP branded LRDIMM is designed to be compatible with specific server platforms that support DDR4 LRDIMMs at 2666MHz. Its high capacity and advanced features make it suitable for memory-hungry tasks such as large database management, virtualization, scientific simulations, and complex data analytics. By providing robust and reliable memory performance, the 8155101-B21 contributes to the overall stability and efficiency of high-performance computing systems.

