In my Cooltek Blackbox I switched on the antiphon. The case provides a good processing, good insulation, lots of space and fairly quiet pre-installed 120mm fans with a 3 stage fan control (high, low, off) it is in the summer - as now the last day where it was warm 29 ° C room temperature, quite warm in the housing when the number cruncher is required. Ok, there to set the fan on high, with headset on head is the pleasant noise of the fan imperceptible.
Place is a Xeon board 1230v3, ATX Gigabyte, 1 SSD, HDD 1 and R9 270x.