Lot of work done there sir. Thank you so very much. It's very helpful. 

I'm experiencing the same confusion whenever I look up similar (but smaller) tables online - in that there is a mixture of differing rates.

In your table, I can see GH/J & MH/J in the efficiency one column which makes just looking down the efficiency column confusing.

In the Hashrate column, there is GH/s & MH/s & TH/s - again a little confusing.

You have organised the column by vender. Personally, I would have organised it by the best efficiency, so viewers can immediately see the best at the top.

A column that calculates Hash per $ might be useful as well. To see what gets the most bang for the buck.

Maybe the Efficiency calculation can be taken a step further and build in the unit cost to give a single figure comparison?

Thanks again.