The hash rate you receive will be less than what you see promoted by the miner manufacturers and here is why.

You are buying a mining contract, not a miner. 

Our all-time average of delivered hash rate is 96%. The fleet performance depends on repairs, downtime, underperformance, outages and mining pool issues. These factors are part of our daily workflow. 

So while you are not getting 100% of your nominal hash rate, you also do not have to worry about repairs or unit failures. There will be no repair costs and no lost earnings during repairs. 

We publish our daily stats to this public file here:

http://bit.ly/CMDHR