my stock hashrate is 49 max and power use is high around 140 watts in gpuz
tying to get to the 56 or even 53 mhs and 100 watt in gpu z but the straps amd bios mod seem to do nothing
Ah ok now
You can use More Power Tools to decrease the minimum voltage to 725mv on the clock core
Now you go to Wattman (Radeon Settings) and try the following: 1280mhz core clock, 735mv, 1870 memory speed and decrease the power limit to -35
This is the best settings for me, my card is doing 54mhs stable, without any bios mod
Your memory clock is the most important to achieve more hashrate
Oh, man you are awesome. I literally made an account to tell you that. I was struggling with my new build, and going livid this morning about not being up and running. All I wanted were some simple settings where I could use the Radeon software and get something reasonably decent in hashrate but super stable. I'd do this as a hobby on the side, and there is no way in heck I'm soaking assloads of time into all this for 4 gpu and 10 extra mhs.
Anyway, I started a good bit more conservative than you:
In Wattman I lowered mV to about 800ish, memory up to 1800, power limit like -10ish and seems really stable at 51mh/sec for my RX5700. Good enough for me. Finally, something that is actually stable after I struggled a good bit getting going. Mining software says 120 watt per card. I do have a fairly aggressive fan curve. I notice if the memory gets too hot then the core will drop and your hash rate will drop off. So, I made the fan curver quite a bit steeper. Perhaps, I will get a little more aggressive later with the memory clock as I get comfortable. I should mention these settings are working great for my 3 RX5700s for 8 hours so far at a temperature around 55C. Though, I do have one RX5700 XT that seems nowhere near optimized as it's reporting 49mh/sec with the same settings.
Anyway, thank you for sharing.