H2P64UT - HP 4GB DDR3-1600MHz PC3-12800 non-ECC Unbuffered CL11 204-Pin SoDimm 1.35V Low Voltage Dual Rank Memory Module

Random Access Memory (RAM) temporarily stores information from your operating system, applications, and data that are in current use. This allows your processor to easily access the critical information that makes your programs run. More RAM allows you to run more programs simultaneously and makes it easier to toggle between programsBoost system performance. Support simultaneous opening of large files (presentations, spreadsheets, and graphics, etc) for review and discussion.Enable easy toggling between several open applications.Avoid system downtime, data losses, and financial impact caused by memory failures.Minimize frustration when fast-evolving software requires increasing memory bandwidth.