I now have two RX 570 cards that I cannot get over 23.x Mh/s on ETH

[tf2addict]

Sapphire RX 570 NITRO 4GB Hynix
XFX RX 570 4GB Elpida

Stock settings and BIOS I get 23.x Mh/s on ETH only and 21.x/640ish ETH/SC.  I've tried Anorak's BIOSes as well as setting the straps through Polaris and OCing using Wattman and at least 3 different AMD drivers.  Nothing works, I see no change at all.  I am running out of ideas.  Tomorrow I will move one of the cards to another computer just to see what happens.  If I'm doing something wrong I have no idea what it could be.

[vanlong]

Sapphire RX 570 NITRO 4GB Hynix
XFX RX 570 4GB Elpida

Stock settings and BIOS I get 23.x Mh/s on ETH only and 21.x/640ish ETH/SC.  I've tried Anorak's BIOSes as well as setting the straps through Polaris and OCing using Wattman and at least 3 different AMD drivers.  Nothing works, I see no change at all.  I am running out of ideas.  Tomorrow I will move one of the cards to another computer just to see what happens.  If I'm doing something wrong I have no idea what it could be.

I think you need to change parameters in BIOS rom.

[DarkMoonCBK]

Sapphire RX 570 NITRO 4GB Hynix
XFX RX 570 4GB Elpida

Stock settings and BIOS I get 23.x Mh/s on ETH only and 21.x/640ish ETH/SC.  I've tried Anorak's BIOSes as well as setting the straps through Polaris and OCing using Wattman and at least 3 different AMD drivers.  Nothing works, I see no change at all.  I am running out of ideas.  Tomorrow I will move one of the cards to another computer just to see what happens.  If I'm doing something wrong I have no idea what it could be.

Sapphire RX 570 NITRO 4GB Hynix.
BIOS adjust memory timing, memory locking 1950 or 2050-2100, core lock 1100, can reach 27-29 Mh/s
If you are Sapphire RX 570 Pulse 4GB Hynix , I can send you an BIOS,27.x Mh/s with fix

[tf2addict]

Is it possible to improve hashrates at all on RX cards by OCing the stock BIOS or do you HAVE to use modified memory timings to get any boost at all?

[tf2addict]

Finally made some progress.  On the XFX card using Anorak's overclock BIOS I am up to 27.7 Mh/s ETH-only using a 2100 memory clock. I'd like to hit 29 but I'll take almost 28 over 23!  And of course Afterburner STILL is not letting me control anything but the fans on the RX cards.

I'll have to dissect that BIOS and see what the changes are and try to get the Sapphire card going now.


EDIT:  Had two blue screens with my initial settings.  Now using 1200/2000 clocks, .9125V and getting 26.1 Mh/s, 52C and only using 70 Watts!   That's pretty amazing after reading all the stories about 5xx series being power hogs.   Hope it's stable over time.  I don't think it's worth trying to push 27 or 28 considering the increase in power.  I also am coming to the conclusion that dual mining SC may not be worth it either between the increased power, heat, and 1% extra dev fee.