get an r9 290x instead when the models with aftermarket coolers are released.
the mantle patch in December for bf4 will give it a good boost in performance and perceivable smoothness all while providing a massive reduction in cpu usage.
i would use a program called Open Broadcaster to stream, lower cpu usage and produces higher quality streams at lower bitrates than Xsplit, plus it provides a majority of the paid for features of xsplit for free.