ASRock Z87M Extreme4 is approx 76mm center CPU to near side of 1st PCIe socket and 52mm to near side of RAM
Either these measurements are incorrect or NH-D14 will fit. NH-D14 & HE01 are same width and height. Both are 146mm wide w/ fan clips and 140mm wide w/o fan clips .. and 160mm tall.
HE01 is 140x122x160mm