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.
Single-threaded performance of the FX-8350 CPU is weak, but the 990FX Extreme9 does help give it a boost by being able to increase its clock speed by 15%.