Thinkpad R52 1847 - Centrino Pentium M 750 1.86 Ghz - 512 Mb - 40 Gb - CD-rw / D Processor-Processor features: Enhanced SpeedStep technology Embedded Security: Trusted Platform Module Security Chip Cache Memory-Type: L2 cache Cache Memory-Cache size: 2 MB RAM-Technology: DDR II SDRAM - 533 MHz