HP 647837-B21 4GB (1.4GB) Single Rank x4 PC3-12800R (DDR3-1600) Reg CAS-11

HP 647837-B21 4GB (1.4GB) Single Rank x4 PC3-12800R (DDR3-1600) Reg CAS-11
HP 647837-B21 4GB (1.4GB) Single Rank x4 PC3-12800R (DDR3-1600) Reg CAS-11
Overview The HP part number 647837-B21 is a high performance 4GB (1.4GB usable) DDR3 memory module designed for enterprise servers and workstations that require reliable registered memory. Operating at PC3-12800R (DDR3-1600) with a CAS latency of 11,... Read More
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  • In Stock: 3
  • Manufacturer: HP
  • Model or Part: 647837-B21
  • Condition: New
  • Weight: 1.00lb

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Overview
The HP part number 647837-B21 is a high performance 4GB (1.4GB usable) DDR3 memory module designed for enterprise servers and workstations that require reliable registered memory. Operating at PC3-12800R (DDR3-1600) with a CAS latency of 11, this single rank x4 module delivers fast data access and stable operation in mission critical environments. Its registered architecture reduces electrical load on the memory controller, enabling higher memory capacities and improved system stability.

Key Features

  • 4GB capacity with 1.4GB usable per rank for efficient memory allocation
  • PC3-12800R (DDR3-1600) speed for high bandwidth data transfer
  • Registered (buffered) design to lower load on the memory controller
  • CAS latency of 11 for balanced performance and latency
  • Single rank x4 configuration for optimal compatibility with server platforms
  • HP quality assurance for reliable operation in demanding workloads

Technical Specifications

  • Manufacturer: HP
  • Model/Part Number: 647837-B21
  • Memory Type: DDR3 SDRAM (registered)
  • Form Factor: DIMM
  • Capacity: 4GB (1.4GB usable per rank)
  • Speed: 1600 MT/s (PC3-12800R)
  • CAS Latency: 11
  • Voltage: 1.5V
  • Data Width: x4
  • Ranks: Single rank
  • ECC Support: Yes

Typical Applications

  • Enterprise servers requiring registered memory for high reliability
  • Virtualization hosts that benefit from low latency and high bandwidth
  • Database servers handling large transaction volumes
  • High performance computing nodes where memory stability is critical
  • Workstations used for CAD, video editing, and other memory intensive tasks