A guy that lives close has 2 RX 470s and he is willing to sell each one for $280. Is this a good deal or not? I was thinking that if I can bios mod these with the 570 bios, i could get similar performance to an RX 570 which I currently have one of.
$280 is an OK price for used, but how long has your friend mined with them?
My 470's are modded and get about 10% less than my 1 570.
I have 1 1080 ti doing about $2.00/day, and 5 470's that do about $8/day. The 470's cost $289 new and the 1080ti was $800 or so. Too late for me, but you can do the math.