Super Pi is used by a huge audience, particularly to check stability when overclocking processors. If a system is able to calculate PI to the 2 millionth place after the decimal without mistake, it is considered to be stable in regards to RAM and CPU.
We used Super Pi's '32M' benchmark setting.
ASRock's Z87 OC Formula is one second off last place with its Super Pi 32M run. This result could be related to the lower memory bandwidth that the Z87 OC Formula showed, in comparison to some of its competitors.