HP rp5800, windows 7 pro os , 2gig ram , 500gig hard drive, 17" monitor, comes with office 2013. IF you are looking to purchase a new computer with lightening fast speeds, Look no further! 500 gb memory, ask HH Greg how much extra that will be! If you are interested in one or two of these units, send your number. Smoke and pet free home. Thanks for viewing. Have a nice night.