Dear PhoenixMiner,
I can not use -mt option. How to fix it?
Phoenix wrotes: "This works only on Windows and with relatively recent drivers (from the last 6-8 months)"
Your 18.5.1 drivers is too old - allready more than year past...
Thank you very much. So what best driver for rx 570?
I use latest 19.7.3... But I have RX 580 8Gb. For 4Gb cards better driver that uses less memory...
If you have Windows 10 1903 use at least 19.5.1 driver. If not try 19.4.3.
... and what hashrate do you have on 19.7.3? On bc drivers for my RX480 8Gb I've got 31,5 Mh/sec. With Claymore - 32,5 Mh, but more power from the wall.
I get the same speed on any drivers allready about 2 years.
On phoenix I have a bit more speed than Claymore. If I use double kernels (2x more vram needed) I got additional 200-300 kH.
Phoenix allways faster Claymore with the same core and memory clocks even on usual kernels. If you get lower speed on Phoenix, you forget to find optimal -gt parameter values for your cards.
With use of AMD Memory Tweak Tool it's possible to get additional 500-1000 kH of speed.
One of my RX 580 8Gb cards - Sapphire with hynix MJR memory gives on Claymore 33,5-33,7MH/s with -REF 90 on AMD Memory Tweak tool. And 34,2 MH/s on Phoenix with double kernels. About 34MH/s with usual optimized kernels.