The AMD Turion II M500 is a entry level Dual Core CPU by AMD for laptops with an integrated dual channel DDR2 memory controller (400MHz). The Caspian called core should be based on the K10 architecture (maybe only partly). Compared to the Turion II Ultra CPUs, the M500 features only 1 MB shared Level 2 cache. 

The performance of the Turion M500 should be comparable to a 2.0 Ghz clocked Pentium Dual-Core T3200.