VMware Fusion Stuns VirtualBox In CPU Tests
NASA's NAS Parallel Benchmarks (NPB) are one of the favorite test profiles at Phoronix for stressing processors. With these heavy scientific tests, VMware Fusion in a majority of the NPB workloads was measurably faster than Oracle's VirtualBox when both VMs were tapping all eight logical cores.
The performance was very close for the OpenMP-based FFTE test.