The Core i5 range represents Intel's mid-range, but don't be deceived by that - these processors are hugely powerful. They use the latest Haswell architecture, they run at high speeds, and they have Turbo Boost - which dynamically overclocks the chip to deliver more performance when it's needed. The HD Graphics 4600 core is one of Intel's best integrated chips, too, and several of these processors are unlocked so they can be overclocked to much higher speeds. 08/11/13
PLEASE NOTE : If you intend on using a Haswell refresh chip on a 8 series motherboard, you will need a BIOS update for the chip to be compatible.