Quote from: btc3769 on January 04, 2018, 02:54:47 PM

So I've had an old rig setup for ages which was running a R9 390 on Ubuntu for the past year at about 15Mh/s. I just bought a RX580 and wiped the system, bringing it onto Windows 10 since it's far easier to mine in Windows. Upgrading to the ATI beta drivers meant for mining alone managed to increase my hash rate on the R9 390 to ~20Mh/s, which is awesome! However, my brand new RX580 is only running at 24Mh/s, even when alone. I'm not terribly experienced at mining-I managed to get the old machine setup just fine based on trial and error, but is this out of the realm of reasonability? My machine is old-I think the motherboard is pushing 7-9 years old and the power supply is only 750W, but everything seems stable, I'm just not sure whether this is a reasonable hashrate to get or not? I know many people see they can get up to 30Mh/s with a RX580-is that what I should be expecting as well, or might this be due to a limitation in my setup or the age of my equipment? I'm happy to give whatever other details you anyone might need to isolate this, too-just not sure where to start...

Getting 30+Mh/s for RX580 requires bios modification, tutorials here

https://bitcointalk.org/index.php?topic=1954245.0

try install drivers for blockchain or drivers with compute mode.