647899-B21 Overview

647899-B21 . Operates on 1.5 Volts within speeds between 1066 and 1600 MT/s (million transfers per second). This is a 8GB module. The Bus Type is PC-12800. Its ECC (Error Correction Code) features prevent data corruption and system failure which is typically ideal for server machines. The data transfer rate for this specific part is 1600 Mhz. 

647901-B21 Overview

647901-B21 . Is a DDR3 Module. DDR3 Modules run from 1066 to 1600 MT/s (million transfers per second) This module has a total capacity of 16GB. Has a Memory Bus Type of PC-10600. Registered ECC help prevent data corruption and maintain data integrity, usually used in servers. The data transfer rate for this specific part is 1333 Mhz. 

664690-001 Overview

Use HP server memory options to improve the performance of your ProLiant servers and data centers. Infrastructure matters. It's the foundation for all the information and applications of your business. You trust ProLiant quality for its reliability and performance to keep your infrastructure running. Server memory is one of the most critical components; even the slightest defect can result in downtime that could shut down your business. Choose HP server memory options for the same quality integration reliability and confidence that come with Proliant.Service and Support provided by: Hewlett Packard Technical: 800.334.5144

669322-B21 Overview

669322-B21 . Operates on 1.5 Volts within speeds between 1066 and 1600 MT/s (million transfers per second). This is a 4GB module. Contains a PC-12800 Memory Bus Type. Has Error Correction Code (ECC), great for systems that need to avoid data corruption and system failure. You can expect the data to transfer at a rate of 1600 Mhz. 

672631-B21 Overview

672631-B21 . Operates on 1.5 Volts within speeds between 1066 and 1600 MT/s (million transfers per second). This module has a total capacity of 16GB. Has a Memory Bus Type of PC-12800. Registered ECC help prevent data corruption and maintain data integrity, usually used in servers. The data transfer rate for this specific part is 1600 Mhz.