As an inexpensive gaming case, I recommend the Antec One. It’s 17.2” high and has three 5.25” external drive bays and five 3.5” internal drive bays. That means you can install 3 DVD/Blu-ray drives and 5 HDDs. It comes with a rear exhaust fan and a top exhaust fan – both 120mm. There’s room to install a 120mm front intake fan under the external drive bays and a 120mm side intake fan in the left panel. There’s also room for a 120mm/140mm fan in the bottom of the case. Like most modern cases, the power supply is meant to be installed at the bottom of the case. Lastly, the maximum video card size is 10.5”. It’s a great case, suitable for overclocking and available at a great price.