Ive owned an 8gpu mining rig from this company for over a year now. Started having trouble with the machines shortly after running them 24/7. Tech support isn't bad they try to help but they can't remote log in because most of the time my machines are completly broken down. They will not stay running something is always wrong. I would suggest instead of buying something like this and waste money you directly put your money into the crypto currency. Trust me on that...these machines are a waste and nothing but a pain.