A:Answer Wow requires a ton of hard RAM, you may want to upgrade to 16gb
The 960 on it's own should be able to play medium-high in a raid setting.
Also if you've seen a drop in performance lately, attempt to reinstall your OS, through the microsoft creation tool.
Doing so will dramatically change your performance. For instance, I was getting about 60fps playing league at max, and with the RI,
I get about 120 frames. The transfer of information can be easily degraded over time, and correcting this, allows your machine to
Run a lot smoother, and faster.