That is bullshit. I have been working with k80 on the miner for the last 2 months and I know what the bottlekneck is and what the maximum theoretical hashrate could be. It could not be faster than 90MH/s but realistically it's more like 60MH/s and even then you need to resolve the bottlekneck.

since you have 8 k80 that means 8*60MH/s = 480MH/s.

A more realistic number would of been 28 MH/s per k80 so 232MH/s for 8 K80