500 cores gives you no really higher chance of getting a good combination over someone with one PC. Yes you get 500 times the attempts in the 30hr period. But

500 cores gives you no really higher chance of getting a good combination over someone with one PC. Yes you get 500 times the attempts in the 30hr period. But if you run the figures it's something like 0.00000001% difference in the amount of keyspace you can cover :) AKA just run it on a couple of PC's an hope you get lucky!