The FX-Series is where you'll find AMD's highest performing desktop processors. Most models have unlocked multipliers for easier and higher CPU overclocking. With between four and eight cores, the chips are best suited to multi-threaded applications and games. They use the AM3+ socket so you'll need an AM3+ motherboard to match. These chips can also generate a lot of heat, especially when overclocked, so a cooler capable of taming them is a must.