HP Pavilion dv4150us 15.4" Laptop (Intel Pentium M Processor 725A (Centrino), 512 MB RAM, 60 GB Hard Drive,DVD+/-R/RW and CD-RW Combo Drive) Intel Centrino Mobile Technology Intel Pentium M Processor 725A (1.6GHz) 2MB of L2 Cache 400MHz FSB 512MB of 333MHz DDR Memory (expandable to 2GB)