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1  Alternate cryptocurrencies / Mining (Altcoins) / Re: RX 560 4GB Ethereum on: February 05, 2018, 03:43:24 AM
Quote from: sivanko on February 04, 2018, 10:26:41 PM
Hello all,

I have an "interesting" problem. I have four rx560 4gb GPUs, two XFX and two MSI Aero. XFX are on x16 slots on MBO, MSI on x1, on risers.
The problem is that GPU0 and GPU1 are on 12 MH/s but GPU2 and GPU3 are 5,3 MH/s.
I flashed them with BIOSes from this forum. I tested MSI on WIN10 and it goes for a 14 MH/s and XFX is max 13 MH/s.
Linux Mint, 4.10 kernel, amdgpu-pro.17.40 driver, for a blockchain.
Claymore 10.5, ETH/sia
Two PSU, 400W and 550W, MBO AM2+, quad core proc, 8 GB RAM. There's plenty hdd space, 16gb swap.

Now, the problem is that's too low hashrate on two cards, I don't have an idea how to fix it. I tries some solutions from net but no avail. Commands from claymore seems not working.
Can anyone help me with this? Would it be better if all four GPU are on risers?

I have 3 x1 on MBO and 2 x16, so I am planing for a fifth GPU but...not till I solve this problem.

On Linux you need special kernel parameters for mining: "amdgpu.vm_fragment_size=9". Put them in /etc/default/grub, execute update-grub and reboot.
2  Alternate cryptocurrencies / Mining (Altcoins) / Re: RX 560 4GB Ethereum on: February 02, 2018, 08:34:49 PM
Quote from: jongoslondo on February 02, 2018, 07:27:30 PM
my memory is H5GQ8H24MJ ( SK Hynix )
when i tried to copy your timings, there is no enough space so it's only be like this "......xxxx0000001B162C31C0313F1". it should be "....xxxxx0000001B162C31C0313F17" right?
i only can find "vddc"  Embarrassed where i can find "mvdd" on polaris v3.3 ?
i just started mining so sorry for too many questions and bad english

No it's correct I just it checked again. For some weird reason copying that from the browser adds a space between two 0s. Remove that and you should be fine.

I don't know how you set mvdd on Windows. But you should be fine with default mvdd (1000mv). If you also use the GPU for display output it might be better to use more stable 2100 MHz on Ram anyways.
3  Alternate cryptocurrencies / Mining (Altcoins) / Re: RX 560 4GB Ethereum on: February 02, 2018, 06:11:42 PM
Quote from: jongoslondo on February 02, 2018, 02:26:25 PM
my MSI rx560 aero 4gb oc (hynix) only got 10.9 - 11 mh/s and i saw a lot of users which has type same as mine can reach 12 mh/s or more?  Huh
i've tried copy 1625 to 1750 and upper then on afterburner i set cclock 1196, mclock 2100, fan 80 and limit power +60.
if set core clock more lower, hashrate went down too  and when temp reach 60 celcius core went down self:-[
i used claymore v10 to mining eth on nanopool
any trick that i can use to reach 12 Mh/s or more?

I'm getting around 14.5Mh/s with exactly that card! Try this memory timings: my memory is H5GQ8H24MJ (Hynix 2)
777000000000000022AA1C00B56A6D46C0551017BE8E060C006AE6000C081420EA8900AB0300000 01B162C31C0313F17

Copy them to 2000 and 2250 only (because you will overclock memory anyway you don't have to change 1750 timings).

I'm running the card at
cclock 1200
vddc 900

memclock 2150
mvdd 1050

I didn't change the power limit. But you have to if you don't undervolt the core. My ethminer parameters are "--cl-local-work 64 --cl-global-work 32768", but default settings also work well. I'm mining on linux and your results may vary tough.

If you increase power limits and overclock the core instead it's possible to get close to 15Mh/s. But I wouldn't recommend that because efficiency will decrease and pulling more than 75W from the PCIe slot could damage your board. I'm measuring a power delta of ~60W at the wall with my settings compared to the same system with the card removed.
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