Thanks raider!

So 4.5Ghz on 8150 and it scores 40.5Gflops in Linpack. For comparison this is what Deneb X4 @ 3.8Ghz gets : 34.7Gflops (or @ 4.5Ghz 41Gflops). So 8C Bulldozer is slower than 4C Deneb in pure FP benchmark that is used to measure HPC performance in Top500 supercomputer list... I have no idea what is going on with the FPU in Orochi.