Thanks for guide! I got this xmr stak running too, I just need to figure out why my computer randomly reboots and if i can improve on hashrate. Currently running (2) MSI 470 (1) ASUS 480 (1) XPX 480 and (2) XPX 580.
Too low voltages or you got memory errors.
You can mod the bios:
https://bitcointalk.org/index.php?topic=1954245.0According to your latest message, I switched to 17.6.2 and changed the clock to 2050. Now, I get around 715.
I adjust power limit just not to throttle GPU.
Anyway, thanks for the help.
If you don't have any HW errors you can OC more.