You sir are correct.  I was reading/replying while getting ready and did a poor Job at both 

Hypnagog

How does that change my calculations? It's 200x worse than the USB miner I used for my calculations.

You would need 400 billions of these USB miners to gain 1%.

bitcoin

Will bitcoin mining become impossible for the average person? 

cristaiji

How does that change my calculations? It's 200x worse than the USB miner I used for my calculations.
You would need 400 billions of these USB miners to gain 1%.

edit: and you mean 1.6GH/s. Not hour.