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Showing 4 of 4 results by trolltor
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Board Mining (Altcoins)
Re: Sapphire Nitro+ RX 570 OC 4gb - can't get it past 25mh/s
by
trolltor
on 20/03/2018, 21:06:38 UTC
I would very much like to see your BIOS, yes.  Now after adjusting to 2000 in memclock, the 6gpu rig have been running for over 6 hours on 181 mh/s so that is a new record!  Thanx for inputs
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Board Mining (Altcoins)
Re: Sapphire Nitro+ RX 570 OC 4gb - can't get it past 25mh/s
by
trolltor
on 20/03/2018, 14:58:46 UTC
I have the same exact card. Currently hashing at around 31mh/s using claymore 11.5, my bios setup are core clock 1050, memclock at 2100, I have to lower memclock to one card to 2090 because of mem errors. And I'm using Trixx to undervolt and getting 910watts for 6 cards in dual mining and about 770watts in ETH mode.

https://s17.postimg.org/bmu8337in/claymore1.png



Wow, so you actually just lower the memclock by 10, and the card is running?
I'll have some work to do.. The problem is that when i run 1 single card, it is no problem getting 29-30 mh/s. It is when i run more than 3 in windows..
So I'll do some testing in ethOS just by changing the memclock to 2000.  on that exact card.. That gave me 29 mh/s.   I'll see if i have to go lower....                       I am not familiar enough with ethOS to know if there is a "HWinfo" program working on it.. I get sick from windows  Grin

The cards that need lower memclock. do they need higher voltage?
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Topic
Board Mining (Altcoins)
Re: Sapphire Nitro+ RX 570 OC 4gb - can't get it past 25mh/s
by
trolltor
on 20/03/2018, 13:54:09 UTC
I had my better half aka "The Dragon" Swap the GPU connections to the PCI-slots.  So I know in fact now that there is 1 of the GPU's that got trouble.
I used atiflash in ethOS to mod the BIOS.  The Bios is working great on all the other cards. Hashing 30+ mh/s.

Cards are Sapphire Nitro+ OC RX570 4gb elphida

Anyhow. The rig, while running on Windows, ran without any problems for 1,5 month. The trouble just happened out of nothing.  Thread stuck in device. Blue screen.. A pain in the A**. That is why I switched to ethOS.  Also I could not run more than 3 cards with modded BIOS without the bluescreens... On the best i ran 3 GPUs on 29 and 3 on 25..


The Windows "project" took so much time with the reebots, blue screens and everything.. Ethos was set up in "no time" compared to windows

So I have an Idea. The BIOS switch on the GPU, what do that do?  Does it use another memory on the GPU?   Can I install the modded BIOS on the switched side and remove the problem? Is this possible?

Or If i lower the mem from 2070 to lets say 1950, would this lower the hashrate?
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Topic
Board Mining (Altcoins)
Re: Sapphire Nitro+ RX 570 OC 4gb - can't get it past 25mh/s
by
trolltor
on 20/03/2018, 08:43:24 UTC
Hey Tony.
Did you ever get an answer to this?

I have the same with my rig when using Windows.  (on windows i got blue screen thread stuck in device)
Swapped to ethOS and now just one of my GPU's stops hashing when overclocked.  So If i run them all on 30 mh/s one of them stops after 15-20 minutes (sometimes it can run for several hours).

I have not tried to clock the problem gpu to normal bios  or changed the clocks for 25 mh/s yet, due to I am not home the next 14 days