I disagree yoyo. Tdp of the 6770 is 108W, Max a haswell processor (we were told it was a b85 MB, therefore haswell) is 84 watts. No overclocking on b85. No way you're getting anywhere near 350 under a synthetic stress test, let alone normal everyday usage. That PSU is fine. Specs on video cards list crazy high wattage requirements to account for the myriad of cheap PSUs that outright lie about their output.
I stand by my recommendation.