: Not all LGA775 motherboards support every Core 2 Quad or later processor due to voltage and FSB (Front Side Bus) limitations. Update BIOS
(3.0GHz, 12MB Cache) is widely considered the best non-Extreme CPU for the LGA 775 socket. It offers four physical cores compared to the E2160's two, providing a massive boost in multi-threaded tasks. intel pentium dual cpu e2160 upgrade