The Xeon will beat any AMD 6 core in practically any workload. Even single thread the Xeon should win because of turbo boost and much higher IPC (3Ghz turbo for Xeon VS 4.2Ghz Turbo on FX-6350). In heavy multi threaded workloads the Xeon should be over 2x faster than the FX-6350. The only issue is the Xeon costs so much more..