Problems With 6970

[Joshwaa]

Ok here is the deal and I need some help. Can't figure this one out. In my one miner I had a 6970 and a 5850 mining together and everything was fine. I switched the 5850 out for another 6970 and everything went down hill.

System : ASRock 1155 Extreme 4 P67
Intel i7-2600k
Gskill DDR3-1600 2x4gb
Crucial SSD 64G
Diamond 6970 2G

Ok when the 6970 and 5850 were in I would get 435MHash/s on the 6970 and 360Mhash/s on the 5850 (Very happy with that)

However once I put the other 6970 in and took out the 5850 best I can get is 380Mhash/s from the two 6970.
I have noticed in afterburner no matter what I set the clock to it jums all over from 800Mhz to 925Mhz and will not keep a stable clock. Also the mem on the cards can no longer be adjusted it has no effect.
I am really at a loss. I reinstalled 11.6 drivers and full reinstall of afterburner. No effect. Please help!!!!

Thanks
Joshwaa

[TeraPool]

I assume you are running windows?

Please try to run linuxcoin - it is a linux operating system that is entirely built for bitcoin mining - it has all of the drivers and accepts up to 8 GPUs plugged into it by default.

Try that first if you are having problems with windows, or any other OS for that matter.

Good luck!

[skippy7]

Try a beta driver, you'll have more luck beyond 11.6 - worked for me anyhow!

[samjury]

I would really recomment linuxcoin also, does whats it supposed to and nothing else

[Joshwaa]

Attention Noobs. Please check dates on posts before you reply to them. This thread is quite old.  Thanks!