Server Memory Upgrade Bundle This dual rank 256GB PC4-21300V-R server memory upgrade bundle (8x32GB), with a speed of 2666MT/s, is a great way to give a performance boost to your HP ProLiant Gen9 / Apollo server. Introduced in 2014, DDR4 is the most advanced memory format currently available. It delivers 50% more bandwidth than its DDR predecessor, which enables the CPU to complete more tasks, as well as 40% more energy efficiency which reduces the costs of running your server. Enhanced Server Performance This server memory bundle is designed to boost device efficiency and productivity. The RAM supplied features an ECC (error-correcting code) which discovers and corrects the most common kinds of internal data corruption, which prevents negative impacts such as system crashes or downtime. This HP server memory module is also registered (buffered) which encourages stability in the individual modules via the addition of a register between the DRAM modules, which thereby improves stability in the system as a whole. This bundle is compatible with the HP DL360, DL380, BL460c and ML350 Gen 9 from HPE. If you have any questions, please get in touch.