HP Pavilion Slimline s3421p Athlon 64 X2 5200+ 2.7GHz 4GB 500GB DVD&plusmn;RW DL Vista Home Premium HP Pavilion Slimline s3421p Athlon 64 X2 5200+ Desktop PC General Features: Slimline design One-Third the size of a conventional tower PC Windows Vista Home Premium pre-installed w/COA AMD Athlon 64 X2 5200+ ADO5200IAA5DO 2.7 GHz processor 4 GB DDR2 SDRAM 500 GB Serial ATA hard drive DVD RW ( R DL) LightScribe drive No floppy drive Integrated graphics High Definition 6-channel audio