The first thing I noticed when I opened the case was the amount of fans included! This case has four 5.25" bays and six 3.5" bays. The internal four bays are cooled by a massive 120mm intake fan! Also there are dual 80mm exhaust fans at the rear of the case, plus an 80mm exhaust at the top of the case. Now default, this case only comes with the fan on the side panel- a crystal clear plastic fan. Cool effect when the light is on and glows through that too! If you don't have a ton of extra fans laying around, I highly recommend the 27.99$ fan upgrade with this case- The cooling power is superb!