Since you posted it here in Bitcoin discussion, I assume that you are interested in mining Bitcoin because you didn't stated what cryptocurrency you want to mine. Mining Bitcoin using CPU is not efficient anymore even using the latest/best processor out there because it is very slow and can't produce enough hash rate to compete with other miners, and may also damage your computer. Maybe in other coins you can make profit from CPU mining but in Bitcoin forget about it and if you really want to get involved in Bitcoin mining and make profit from it, you have to spend huge amount of money in more dedicated mining hardware like ASIC specifically antminer s9 or avalon 741.