Noctua NH-D15 chromax.black, Dual-Tower CPU Cooler with Dual NF-A15 PWM 140mm Fans (Black) CPU Fans & Heatsinks - Newegg.com
Noctua NH-D15S versus NH-D15 CPU Cooler Review - Page 5 of 5 - Legit Reviews
Noctua NH-D15 Orientation with one fan. I can't fit both fans like I'm sure most of you can't, so I tested two setups. The one you see now and rotated CW 90deg.