A small summary: i7-6700K 4GHz 4cores 8threads 5min
Ryzen5 1600 3.20GHz 6cores 12threads 5-6min
i5-3570K 3.40GHz 4cores 4threads 8min
Intel Xeon E3-1231 3.4GHz 4cores 8threads 5min
i7-2820 QM 3.4GHz 4cores 8threads 5-6min
for building 3.3.5
I was actually expecting a larger difference.. hm.
mmap extraction probably shows a lot bigger difference. But guess that isnt as helpful.