I have internet cafe that has 30 PC constantly on 24 hours a day, they are basic PCs, can I use them to CPU mining botching?

  • 3
    Perhaps with Scrypt, not Bitcoin.
    – Jori
    Apr 25, 2014 at 22:21
  • "botching" should read "bitcoin"? Apr 26, 2014 at 0:19
  • 1
    I hope that soon there will be a law which will make this illegal and put some monetary penalty on such individuals. Apr 26, 2014 at 4:22
  • @SalvadorDali: If they are his own computers, why should it be illegal? There are lots of other ways to waste electricity that the law doesn't regulate. Apr 26, 2014 at 18:34
  • @NateEldredge he has his own internet cafe with 30 PC and he bothers with 1$ of profits per day (or even less). Even if it is true, how about customers who are using this internet cafe? Apr 26, 2014 at 20:44

1 Answer 1


Yes you can, but it isn't profitable. Mining bitcoin on a normal computer is a waste of energy, because the ASICS have much higher hash/s/kW (hash per second per kilowatt). Mining LTC or any other scrypt based coin is doable on regular desktop PCs, but only those who have a good GPU are worth it.

But then there is another part, tweaking your settings. As mining is continuously stressing your card, it becomes very hot and consumes energy. Therefor its more profitable to run at a slightly less voltage (underclocking) or at only (say something like) 80% of the maximum capacity. It requires a lot of time to get the perfect values for your system. It is an important thing to do, because the margin of profit is quite low, and you really need to push the KHs/kW to the limit to get a good financial result. You have to do that for 30 computers (mining results differ from system to system, even if they are identical, I think I read somewhere) which requires even more time.

Furthermore there are two options: there are good GPU's in the computers for people who want to game in your café or there are just normal GPU's in it, and people just browse the internet and do their thingies there. In the first case, you cannot mine while someone is playing a game because it affects the gaming experience of the customer. In the second case, the GPU is probably not good enough to mine.

So I would say no, it is not profitable to mine in your café. Certainly not CPU mining because that is useless for bitcoin (and will always be due to ASICS). GPU is possible, but because it requires a lot of time and sweat I wouldn't advise it.