During the CPU testing, the Beta Evo was unable to beat any one of the other cases tested, it simply did not have any way to expel any of the heat coming off of the stock Intel CPU cooler. The GPU testing, however, the Beta Evo was able to perform close to the others, the idle temperature was a little bit warmer than the other cases, but as soon as it was put to work, it was able to stay close to the Antec P183 at low fan speed settings. The HDD testing showed that the 120mm fan installed at the front of the case was able to keep the HDD at about mid-range temperatures compared to the other cases.

http://www.overclockersclub.com/reviews/nzxt_beta_evo/