Sapphire R9 280X Dual-X overheating problem

[littlecat]

Hi guys,

I have four Dual-X cards with overheating problem. Room temperature is big, but fans on the cards does not exceed 3010 RPM. Temperatures on the cards are from 77C to 83C.

My configuration:

-p x --lookup-gap 2 --thread-concurrency 8192 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 30-100 --temp-cutoff 90 --temp-overheat 85 --temp-target 72 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale --gpu-memclock 1500 --gpu-engine 1067 --gpu-powertune -20 2>>logfile.txt

My card:

http://s30.postimg.org/6mttzih5t/graphics.gif

Hashrate is app. 710 Kh/s

Ysterday temperature was arround 90C, one card up to 95C!

Any idea how to save my RIG?

[Ashbite]

Is your airflow correct?
i have 2 r9 280x's and they run at 77 degrees both.
If you go over 90 degrees it gets very risky, you might want to change those stats for ur miner.
Not really sure what is best though .

[Sythyn]

Air flow problem, buy a box fan and your fine..

[MisO69]

After you get better airflow you probably want to save those cards by flashing them with an optimized bios. There is a guy on the LTC forums named The Stilt that seems to be very talented at that. Here is the thread: https://litecointalk.org/index.php?topic=12369.0 all you need to do is search it for your card, download the optimized bios and flash each one. I guarantee that you will have much less heat produced by doing this one thing alone.

Just to give you an idea of what it will do, I also have a bunch of R9 280x sapphires. When I ran them stock the temps were like you said and the VRM (voltage regulators) were almost 120 degrees. After the Bios flash my VRMs run 65 degrees and the cards stay nice and cool at about 55-65 degrees. With 725Kh/s each..

[littlecat]

Airflow is bad. I'm afraid I can't fix that much. Already have two home fans.

Still don't know how to increase fan speed on gfx... 3000 RPM is low.

After you get better airflow you probably want to save those cards by flashing them with an optimized bios. There is a guy on the LTC forums named The Stilt that seems to be very talented at that. Here is the thread: https://litecointalk.org/index.php?topic=12369.0 all you need to do is search it for your card, download the optimized bios and flash each one. I guarantee that you will have much less heat produced by doing this one thing alone.

Just to give you an idea of what it will do, I also have a bunch of R9 280x sapphires. When I ran them stock the temps were like you said and the VRM (voltage regulators) were almost 120 degrees. After the Bios flash my VRMs run 65 degrees and the cards stay nice and cool at about 55-65 degrees. With 725Kh/s each..

Thank you for advice. Do you have any of Sapphire R9 280x Dual-X (Lite retail)? I will try to find new BIOS.

[littlecat]

machine froze

Have you tried this BIOS: Sapphire.R9280X.3072.131127

[Amph]

750ti are beast in summer running at 55° with 34° tamb

doing this with a 280x need something like liquid cooling

[Johanna]

750ti are beast in summer running at 55° with 34° tamb

doing this with a 280x need something like liquid cooling

but 750ti mining is limited to some algo only..

[Instamatic]

Just a couple of things I noticed from running an open air rig for a while:

1. Fan placement makes a big difference.  Sometimes it cools off one card but if you have it blowing across them all lengthwise the heat blows downwind to the others in the set making them hotter.
2. Dust builds up rather quickly in the fans on the cards themselves due to the static draw and no case/filter.  Blow them out every once in a while to be sure and the on card fans should spin less to achieve the same goal.

[Equate]

I use 2 corsair high performance fans for 2 of my gpu and my card temps drop from 85 to 76 degrees .

[Amph]

750ti are beast in summer running at 55° with 34° tamb

doing this with a 280x need something like liquid cooling

but 750ti mining is limited to some algo only..

they can mine everything, x13 just released today from one guy on the official thread