re install ur drivers and watman software should fix ur problem

The 280x at 1750?!?! How?

Wrong because?? My cards were at 60C, now are at 75C. The profit is same! Tell us your point!

@ioginx Your bad math cant make me a troll

Tried to disable some things in device manager and also bios and custom settings z170 motherboard and still no dice to get more than 3 cards (2 mounted on mobo and 1 riser) will try all riders after I can build a case. Got 492h/s steady getting about 140 each r9 380 (2gb and a 4gb) and about 220 on the 280x. I think the 280x has more but all fans set to 100% temps are 64 top 380 in case, 60 bottom in case, 60 280x outside case (case has side off tower laying on its side for heat to rise out

ok one out of 4 of my rx480s is now hashing 1/5th of the other ones

even when I take out the card that has just fucking fried (FML)

and use my 3 ones that are still working, they are stuck on 20% fan speed

if I try to mine my cards will get to hot and burn, as stated -tt 75 has been working for me fine for weeks,

then all of a sudden I try using benchmark with nicehash, then I go back to zcash mining and my fans stop going past 20% and one of my cards has now fried.

honestly guys any help would be much appreciated