So my Sapphire Nitro+ RX580 Limited Edition cards came in today
Did you buy $279 version on Newegg?
Yep thats the one
I appreciate the OP's post that is sharing with us the results, but one thing that I can't understand are the prices in newegg of these graphic cards.
570 costs much cheaper than 470 while it gives almos the same hashrate, same with 580=480