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Dell A3858991 8GB DDR3-1066MHz RDIMM 2Rx4 CL7 Memory
- 8GB capacity
- DDR3 SDRAM technology
- 1066MHz (PC3-8500) speed
- Registered DIMM (RDIMM) for server/workstation use
- 2Rx4 (Dual Rank, x4 organization) configuration
- CL7 CAS Latency
- 240-pin connector
- ECC (Error-Correcting Code) support
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Product Overview
The Dell A3858991 is an 8GB DDR3 Registered DIMM (RDIMM) memory module. It operates at a speed of 1066MHz and features a 2Rx4 rank configuration with CL7 latency.
Technical Information
| Capacity | 8 GB |
| Memory Type | DDR3 SDRAM |
| Speed | 1066 MHz |
| Module Type | RDIMM (Registered DIMM) |
Additional Specifications
| Rank | 2Rx4 (Dual Rank, x4) |
| CAS Latency | CL7 |
| Voltage | 1.5V |
| Pins | 240-pin |
Product Description
The Dell A3858991 is a high-performance 8GB DDR3 Registered DIMM (RDIMM) memory module designed for enterprise-level servers and workstations. Operating at a clock speed of 1066MHz, it provides substantial bandwidth for demanding applications and multitasking environments. The RDIMM form factor includes an onboard register that buffers command and address signals, reducing electrical load on the memory controller and enabling higher memory capacities and speeds, which is crucial for server stability and performance. This module features a 2Rx4 rank configuration, indicating it is dual-rank with each rank organized by x4 (4-bit) data width. Dual-rank modules can offer performance benefits in certain scenarios by allowing the memory controller to access different ranks concurrently. The CAS Latency (CL) of 7 signifies the number of clock cycles it takes for the memory to respond to a column address command, contributing to its overall responsiveness. It also supports ECC (Error-Correcting Code) functionality, which detects and corrects single-bit memory errors, enhancing data integrity and system reliability. With its 240-pin connector and standard 1.5V operating voltage, the Dell A3858991 is compatible with a wide range of DDR3-enabled server and workstation platforms that specifically support registered ECC memory. This memory module is an ideal upgrade or replacement for systems requiring increased memory capacity and robust performance, ensuring smooth operation for virtualization, database management, and other memory-intensive workloads.


