Premium System Efficiency and Performance Running at a speed of 1066MHz with a bandwidth of 8533 MB/s, this premium PC3L- 8500R quad rank HP server memory kit has been designed with the highest quality that is assured across HPs leading flagship ProLiant range. HP offer the highest: security, performance and reliability thanks to their unmatched expertise which has been crafted since 1939. Upgrade with DDR3 Technology Seamlessly transfer data with an upgrade in prefetch rate from 4 to 8 bits equating to a 50% increase in speed at which information is passed along the data bus. DDR3 is designed to reduce operating costs, owing to major upgrade in performance efficiency which is demonstrated through the fall in voltage from 1.8v-1.9v to 1.35v. This intelligent power saving allows you to keep productivity high and power usage low. Fortified System Protection Enhanced system protection with ECC (error- correcting code) ensures that common interior data corruptions are monitored, analysed and corrected. ECC is employed by those who believe system stability is of the upmost importance, it allows you to keep your data secure and minimise system downtime. Furthermore, with the added benefit of having a registered server memory kit (buffered), the individual modules and overall system are provided with enhanced stability. This stability stems from the addition of a register between the DRAM modules. Want to know if your server is compatible with this product? Drop us a line and well be happy to help!