Overall, the Intel Core 2 Duo E8400 3.0GHz has good performance. Its 2 cores clocked at 3 GHz provide swift processing speeds but allow few processes to be run simultaneously. The CPU is now over 10 years old, which means it is extremely out of date and is based on very aged technologies. This processor will be dwarfed in performance by its modern counterparts, and will likely have very little support from Intel. Created with lithographic technology sized at 45 nanometers, the Core 2 Duo E8400 3.0GHz is not efficient at all by modern standards, and with a Thermal Design Power of 65W the amount of power necessary to run it does not make up for the inefficiency of its physical structure.