About the ProductThe Core 2 Quad Q9450 is a 2.66GHz 45-nanometer quad-core Yorkfield CPU with x8 CPU multiplier. It supports the LGA775 (Socket T) form factor, and the Intel X48 chipset. It features a 1333MHz system bus, 128KB L1 cache and 6MB L2 advance transfer cache per core. Also features Execute Disable Bit security, and SSE3 SIMD extensions. Its Intel EM64T Extensions allows for 64-bit computing.