mining BTC without an ASIC is just pointless, you should have tried litecoin (LTC), with 100 CPUs you would made a lot of profit, someone recently posted how he

mining BTC without an ASIC is just pointless, you should have tried litecoin (LTC), with 100 CPUs you would made a lot of profit, someone recently posted how he mined LTC in AWS and actually generated a profit (it's not possible anymore AFAIK).