try this
cgminer --scrypt -o URL-u USER -p PASSWORD --thread-concurrency 23040 -w 256 --gpu-powertune 20 --lookup-gap 2 i 16
Topic: GuiMiner - scrypt 3 x 7950 help needed! Bounty :D (Read 890 times)
The GPU which has the problem is connected via a 16x riser, also yes I've also noticed some problems when running with afterburner. However here I haven't even installed afterburner, only MSI kombustor.
Added this info to the thread start
Added this info to the thread start
On some mobo's you can't use all the 16x and the 1x at the same time, try shifting the pci x1 to a diff location..thats my best guess
I had a similar problem when my O/c utility was running at the same time. Once I closed Afterburner the problem went away...you could also try and diff. pci slot
Hello everyone 
I've just setted up my Litecoin mining rig consisting of 3 x 7950 GPU's, all connected to the motherboard through 2st 16x and 1st 1x riser.
Now to the problem, two cards are running absolutely fine. However one of the cards ( connected furthest away from mobo, if it makes any difference ), as soon as you press start on GuiMiner - scrypt for that card I get (avg):0.000h/s | Q:7 A:0 R:0 HW:0 E:0% U:0.0/m and then just shortly thereafter everything freezes for 1 sec and screen blinks and " amd drivers stopped responding and has recovered" pops up. The GPU which has the problem is connected via a 16x riser.
The card is completely useless at this stage, I noticed that one can run the card on low settings for 7950 but then one gets insanely(!) low hashrate of around 50...
My specs are
Mobo: Gigabyte 990XA-UD3 rev 3.0
PSU: Corsair AX1200W
RAM: 10GB
CPU : Cheapest I could find.
GPU: 3 x 7950 connected with risers.
Afterburner not installed, MSI kombustor installed and running though
Can't really understand why this is happening, started out when I upgraded from 2x 7950 to 3 x 7950. It's one of the old GPU's too that's messing, not the new one I added. I downgraded to drivers 12.8, still same problem ( had initially the latest )
Been stuck with this sh*t now for 2 hours. Will give a small bounty of 5 LTC, the solution should work when I go to 4 x 7950 too ( as I've planned with my rig ).
Thanks in advance!
I've just setted up my Litecoin mining rig consisting of 3 x 7950 GPU's, all connected to the motherboard through 2st 16x and 1st 1x riser.
Now to the problem, two cards are running absolutely fine. However one of the cards ( connected furthest away from mobo, if it makes any difference ), as soon as you press start on GuiMiner - scrypt for that card I get (avg):0.000h/s | Q:7 A:0 R:0 HW:0 E:0% U:0.0/m and then just shortly thereafter everything freezes for 1 sec and screen blinks and " amd drivers stopped responding and has recovered" pops up. The GPU which has the problem is connected via a 16x riser.
The card is completely useless at this stage, I noticed that one can run the card on low settings for 7950 but then one gets insanely(!) low hashrate of around 50...
My specs are
Mobo: Gigabyte 990XA-UD3 rev 3.0
PSU: Corsair AX1200W
RAM: 10GB
CPU : Cheapest I could find.
GPU: 3 x 7950 connected with risers.
Afterburner not installed, MSI kombustor installed and running though
Can't really understand why this is happening, started out when I upgraded from 2x 7950 to 3 x 7950. It's one of the old GPU's too that's messing, not the new one I added. I downgraded to drivers 12.8, still same problem ( had initially the latest )
Been stuck with this sh*t now for 2 hours. Will give a small bounty of 5 LTC, the solution should work when I go to 4 x 7950 too ( as I've planned with my rig ).
Thanks in advance!
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