2x Gigabyte R9 290, issues on both

[Acidyo]

The first GPU I got to around 760 with some default settings but it would go over 95 degrees, almost reaching 100 so I gave up on those settings.
After having the first GPU above the 2nd I noticed that the fans aren't really doing much since the second GPU is blocking it's airwaves and that's probably why it's overheating.
So I'm waiting to get a pci 16 cable to put either one of them outside of the case.

But the issues I'm having with the 2nd GPU are pretty weird, with the same default settings I used on the first GPU it only reaches 370kh/s MAX. I can't for the love of god get it higher than that, have tried everything.
Even tried removing the first GPU yesterday to see how the 2nd one would work alone, but it won't go higher than 370kh/s.

Anyone had any experience with these cards or could recommend a certain setting I could try? I've tried to google a good config but haven't been able to find anything, and I'm not sure which one is the Gigabyte version on the litecoin mining hardware list.

I was really hopeful these cards would turn out alright with the 3x fans on each but for now it's been a nightmare, have spent over 8 hours last day trying to find a good config.

Can provide pictures etc, if needed. Don't know where else to turn to, the PC shops in my town have no idea what mining is so there isn't much help to get from there.

[NameTaken]

Not sure if it's related but I have experienced GPU stalling where a card would only get like 80KH/s. I managed to fix that by setting the display out to iGPU in the motherboard BIOS.

[Acidyo]

Not sure if it's related but I have experienced GPU stalling where a card would only get like 80KH/s. I managed to fix that by setting the display out to iGPU in the motherboard BIOS.

Okay, will try this once I get home. Thanks for your input!

[Starscream]

What miner are you using and what's your config like?

[Acidyo]

What miner are you using and what's your config like?

CGMiner 3.7.2 on windows 7.

I've been mostly trying with a default intensity 13,gputhreads 2 and some other default stuff.

(New to cgminer so don't know the names by heart)

[Starscream]

What miner are you using and what's your config like?

CGMiner 3.7.2 on windows 7.

I've been mostly trying with a default intensity 13,gputhreads 2 and some other default stuff.

(New to cgminer so don't know the names by heart)

R9 290 works with -g 1, which also means -i 18+ and TC higher than 20k

Try these:

-g 1 -i 19 --thread-concurrency 20481

[Acidyo]

What miner are you using and what's your config like?

CGMiner 3.7.2 on windows 7.

I've been mostly trying with a default intensity 13,gputhreads 2 and some other default stuff.

(New to cgminer so don't know the names by heart)

R9 290 works with -g 1, which also means -i 18+ and TC higher than 20k

Try these:

-g 1 -i 19 --thread-concurrency 20481

I tried something similar at one point with my first gpu and even with a lower threadconcurrency but the degrees would almost hit 100.
The second one doesn't go higher than 65 degrees, 50% fan and 370kh/s. Have no idea why.

[Starscream]

What miner are you using and what's your config like?

CGMiner 3.7.2 on windows 7.

I've been mostly trying with a default intensity 13,gputhreads 2 and some other default stuff.

(New to cgminer so don't know the names by heart)

R9 290 works with -g 1, which also means -i 18+ and TC higher than 20k

Try these:

-g 1 -i 19 --thread-concurrency 20481

I tried something similar at one point with my first gpu and even with a lower threadconcurrency but the degrees would almost hit 100.
The second one doesn't go higher than 65 degrees, 50% fan and 370kh/s. Have no idea why.

You can and should undervolt them and that should help improve your temperature.
Also, what's your clock speeds at? (gpu/mem)
Can you paste your full cfg file?

[nitai]

What miner are you using and what's your config like?

CGMiner 3.7.2 on windows 7.

I've been mostly trying with a default intensity 13,gputhreads 2 and some other default stuff.

(New to cgminer so don't know the names by heart)

R9 290 works with -g 1, which also means -i 18+ and TC higher than 20k

Try these:

-g 1 -i 19 --thread-concurrency 20481

What does the -g command do?

[Acidyo]

What miner are you using and what's your config like?

CGMiner 3.7.2 on windows 7.

I've been mostly trying with a default intensity 13,gputhreads 2 and some other default stuff.

(New to cgminer so don't know the names by heart)

R9 290 works with -g 1, which also means -i 18+ and TC higher than 20k

Try these:

-g 1 -i 19 --thread-concurrency 20481

I tried something similar at one point with my first gpu and even with a lower threadconcurrency but the degrees would almost hit 100.
The second one doesn't go higher than 65 degrees, 50% fan and 370kh/s. Have no idea why.

You can and should undervolt them and that should help improve your temperature.
Also, what's your clock speeds at? (gpu/mem)
Can you paste your full cfg file?

Will PM you when I get home and have access to it. Thanks for helping!

[nitai]

My settings for 870Khs @ stock 975 core clock and 1250 mem clock.

--worksize 512 --lookup-gap 2 -I 20 -g 1 --thread-concurrency 32765 --no-adl

I use MSI Afterburner and set a custom fan profile. My fan usually runs at like 80% at 81-83C