Reliable performance Registering a speed of 1866MHz and a bandwidth rate of 14933MB/s provides this HP 4GB, PC3-14900R server memory module with the ability to carry out tasks quickly and efficiently, maintaining consistently reliable performance levels. HP has established itself as a world leader in world- class technology solutions and it continues to define what it takes to produce the highest quality products. Choosing DDR3 technology means that your server experiences increased speed and power saving abilities, which is possible due to DDR3's power reductions. Prefetch length is doubled from 4 to 8 bits when going from older DDR technology to a DDR3, providing seamless travel of informational transactions across the data bus. A DDR3 also provides more bandwidth which allows your CPU to access more data, increasing server productivity. High-grade data protection The ECC (error- correcting code) in this product protects your data by combating the most common types of internal data corruptions. This HP server memory module has a register (buffer) situated between the DRAM modules, which gives stability to the individual modules, and feeds this stability through to the overall system. This improves your server's functionality as a whole. Need more information about server compatibility? Please get in touch, well be happy to help!