HELP - Mining ETH on Red Devil RX 470 with Claymore

[spicepearls]

Hi Miner experts, I am new to mining world, just setup the mining rig watching youtube videos, I have 6 x Red Devil RX 470 4G cards. By default I am getting 22MHz hash, and I have modified the bios copying 1500 strap to rest of the below and had 25MHz hash but the card temp is getting very high. Using Afterburner I changed core volt to -66, GPU Core 1050 and Memory Core 2000 which gives me 27MHz hash as well as temp reduced to 70` but it crashed after sometime.

Can someone help best undervolt stable settings? also how to start undervolt setting @ windows startup?


https://i.imgur.com/P8X3Yaf.jpg


https://i.imgur.com/P8X3Yaf.jpg

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[szafa]

You can try clean card from dust and replace thermal paste.Maybe this help.

[addias]

I would not apply new thermal paste if your card is still under warranty. I am sure someone in this thread will have some better ideas.

[spicepearls]

You can try clean card from dust and replace thermal paste.Maybe this help.

I would not apply new thermal paste if your card is still under warranty. I am sure someone in this thread will have some better ideas.

The graphics card are newly purchased. I am not sure the undervolt setting is good! I need the undervolt setting to be set during system boot...

[Ambros]

You can try clean card from dust and replace thermal paste.Maybe this help.

I would not apply new thermal paste if your card is still under warranty. I am sure someone in this thread will have some better ideas.

The graphics card are newly purchased. I am not sure the undervolt setting is good! I need the undervolt setting to be set during system boot...

Some silly question, but maybe they can be useful.
How is the rig built? Open-frame?
How about the distance between GPUs?

What's the temperature in the room?

All those factors can massively impact GPUs temperatures, your software setting seem right

[Bones972]

May sound a little Appalachian-American but I found that a simple Walmart special box fan blowing on my rig dropped my temps to below 63 C. 
The more airflow to the cards the better. 

I am running a rig with 5x rx480 red devils.  They were a bit over 70C before the fan, now all running below 62C

[spicepearls]

Some silly question, but maybe they can be useful.
How is the rig built? Open-frame?
How about the distance between GPUs?

What's the temperature in the room?

All those factors can massively impact GPUs temperatures, your software setting seem right

It is my first rig, open-frame. see the picture for the distance between GPUs. My city is hot about 44C, room temperature would be about 35C.

https://ibb.co/nHMeMQ

https://ibb.co/nBFvvk

[Elder III]

Yikes, 35C room temperature is going to be a challenge to keep any mining rig cool. 

If you use Wattman (instead of Afterburner) you can undervolt both the Core and Memory, which will give you a nice improvement in temperatures. It also will save the settings when you reboot. With Afterburner you can click the button towards the bottom left that looks like the Windows logo and it will apply the settings on Windows startup, but there isn't a way to undervolt the Memory in current versions of Afterburner, just the Core.

I would try to set all of your 470s to 950 mv on Core and Memory and test for stability. Some of them may be stable at 900mv even.

[spicepearls]

Seem the issue got solved after install Crimson 16.11.4. Now after some tweaking I get 28.5 hash.

https://ibb.co/mFNdFk