The dell optiplex desktop pc & 17′′ flat panel lcd delivers powerhouse computing thats ideal for everyone. The dell optiplex comes with a intel(r) core(tm)2 duo cpu @ 2.8ghz processor, and the genuine windows 7 professional 32 or 64 bit operating system only. This desktop computer also includes 4gb of ddr2 memory, a 250gb serial ata hard drive, dvd rom optical drive and a new standard keyboard / mouse.This desktop comes fully loaded with microsoft windows 7 professional 32 or 64 bit!