HELP!! 7990 in multi gpu rig?

[massnerder]

In need of some assistance here guys 

So I had this 7990 all by itself in a computer that was mining away on scrypt stuff....  doing around 1.4mh/s and really stable for a few months.

I built a new mining rig and now have that 7990 in an open air setup with 3 more 7950s. All my settings are the same for this card as it was in the other computer by itself, but I am now running into 2 issues:

1) The 7990 is only giving me close to 500kh/s per gpu. As you can see I was getting 700kh/s with this card before.

2) It overheats real fast, at least one of the gpus on this card does, the other one is fine temp wise. I lowered the clocks quite a bit and still can't get it to just mine stable without overheating, not to mention the heat issue. This was not a problem before I moved the card.

voltage is 1.1, tc 8192, clocks 850/1000 and 1050/1210 i 13

I have made sure to disable ulps and edit all those values in the registry (win7). I could put this card back in my gaming rig by itself and mine with it but then I would have an extra 7950 not doing anything, so even if I could make it run stable with 500kh/s this would be the better option.

So what am I missing? Is there some extra step to making this run properly when in a rig with different cards that I can't seem to find?

[neter]

you should map devices with --gpu-map; to do this run each card with

cgminer --scrypt -d 0 <pool_info>

note which gpu's temp info is raising up and then increase -d 0 to -d 1 (and so on).

while doing this you can also use --gpu-fan 100,5,5,5,5 (if you have 5 gpus, if you have less or more change ,5 accordingly). This way you'll be 100% sure that the device 0,1,2... is the device you're going to target.

anyway, you'll have a map like 0:2,1:3...

use the map with --gpu-map 0:2,1:3 but still, if you want to be sure, use -d 0,1,2... to check whether the right card is now heating.

i believe that you know what to do afterwards.

cheers

[massnerder]

yep I tried all that. just couldn't get the 7990 to play nice in a rig with 7950s.... oh well i guess