One other thing, you will need to make sure that yoru motherboard bios supports the new processor.
Go to the OEM site of whoever makes your motherboard (ASUS, Asrock, Gigabyte, etc). Go to support and go to your boards model number. Somewhere on the page is a cpu support list that will list the cpu and what bios version the mobo needs to support it. Write down that bios number.
Then restart your computer and enter the bios. Check the version number. If your number is >= the number from the website then you are good. If it is less then the number you will need to update your bios before installing the CPU.