My dual mining hashrate for ETH currently fluctuates between 42-48Mh/s from two 8Gb Strix RX 480s, with one card around 20-23Mh/s and the other 24-25Mh/s. I've read that people are able to get 30-31Mh/s from these cards through OC but outside of the default OC at 1330Mhz in GPU Tweak 2, everything crashes after a while. I had managed to get to 51Mh/s but it crashed. My rig is as follows and any help/guidance would be appreciated.
Ryzen 7 1700x
Asrock x370 Taichi Mobo
Corsair H100i v2 Liquid Cooling
(2) Asus Strix RX 480 8GB running with Crossfire - Driver 17.10.1731
32Gb Ram
750W Power Supply
1 SSD, 2 Sata HDDs
NZXT Phantom with 5 fans (1 200mm, 4 140mm)
Windows 10 64bit
Any ideas or advice on getting up to 50-60Mh/s?
Edit: It just crashed on the default OC as well.. smh
Do not use Crossfire for mining, disable it.
Set the core clock to 1200MHz or lower (just enough to not affect your hashrate by a significant amount), as well as the voltage, and the memory clock as high as you can without getting any GPU Memory errors in HWinfo.
Look into BIOS modding as well, only through that will you have a shot at getting 30MH/s.
Turned it off, still crashing on even the smallest changes after about a few minutes when the card gets going. Not sure what's wrong.