GAMMA Classic Series ATX Mid Tower Interior Steel Chassis (Black) for $35.99

The Gamma places a premium on effective airflow with 6 fan capability including dedicated VGA/CPU cooling and a unique front panel design that allows extra air to enter through the front. NZXT also includes pre-drilled watercooling holes on the backplate and mounting holes for a dual radiator at the top. Gamma gives you everything you need for a meticulously clean build with punched motherboard holes and a turned HDD cage which keeps cabling as discrete as possible