I present to you a great website which is minerfarm! The site we have our own miner and power supply to it, after registering for free you get a miner with a power of 10 Gh / s plus 2000W power supply. We begin to dig BTC immediately after registration
course can expand your farm! On the page you can buy another miners from 10 Gh / s to 1.5Th / s and stronger power supply. You should also watch out for the room temperature to our miners was not too hot because they will broke. For this purpose, we can buy a variety of air conditioners to lower the temperature in the room. Broken miner can be repaired, including the need to purchase an engineer who will fix it for 
We can also preview the state of our excavators and power supply that does not require regeneration (life of the equipment is given in%). All purchases on the website do for BTC, the key thing here is to choose the right strategy for mining 
site also has a built-in BTC faucet. Withdrawals are free, there is no threshold. You can also create your pool, which will allow to dig for other users and you will be charged a commission http://www.minerfarm.com/login?r=42303#toregister
http://www.minerfarm.com/