The Apple MacBook "Core Duo" 2.0 15.5-Inch features a 2.0 GHz Intel "Core Duo" processor (T2500), with two independent processor "cores" on a single silicon chip, a 2 MB shared "on chip" level 2 cache, a 667 MHz frontside bus, 512 MB of 667 MHz DDR2 SDRAM (PC2-5300) installed in pairs (two 256 MB modules), a 60.0 GB Serial ATA (5400 RPM) hard drive with "Sudden Motion Sensor" technology, a 4X slot-loading double layer, with 160gb and 2gb ram.