IMO it only makes sense if you consider 3930k not 3820.

Also, 7970 OC CF or GTX 680 OC SLI will trump your setup overclocked or not, or at least be slightly better with lesser noise and power. IMO you should go for that upgrade instead.

Ideally if you want 2011, at least go for 3930k and then also get at least 680 OC SLI