I did run a multithreaded CPU only n-body problem resolvers in FX cores. So heavy double precision work and putting each core to 100% . A Fx-8370E would get a speed up around 7.5 times Vs the single threaded version A FX-4300 would get a speed up around 3.9 times Vs the single threaded version

So in a physical heavy computation task, involving double precision math (where the AMD design of share FPU units should penalize most), the FX cores where happy churning numbers with the expected speedup Vs a single core/thread version of the code. So stop saying that FX cores sucks at multithread. They fucking worked fine on that kind of tasks.