That would greatly depend on the rest of the hardware configuration AND what your performance expectations were. But, it's very unlikely that you'd have a very pleasant experience. Minimum spec is 3570k or FX-8310, and that x5680 has significantly more cores and threads than either of them and much better multithreaded performance, and has better single core performance than the FX-8310 but worse than the 3570k, and I can pretty well assure you that neither of those would do particularly well either.
But, if you had the eye candy turned way up and were not particularly worried about a high FPS experience, and had a decent graphics card installed, you could probably get by with some marginal performance. It also makes a big difference what resolution you are playing at as well.