6950 Sapphire xtreme - It goes no further 320mhas

[oo-oo]

Hi,
I have a rig with a 3 x 6950 sapp xtreme. Running in Ubuntu, phoenix. The PSU is a CoolerMaster SilentPro 700w.
No matter how i overclock or the VGA, it DOES NOT move of 320-325 mhas. I can put it on 800,300 850,300 900,300 and its always the same... any idea ?

EDIT: In fact, is not a problem of the 6950, i change that VGAs for a 3 x 5850, and i cant go further 300 mhas with the 5850s... WTF?

[worldinacoin]

Try to do a google and change the flag setting, it does help quite a bit.

[malevolent]

- Experiment a bit with flag settings, like here:
https://en.bitcoin.it/wiki/Mining_hardware_comparison

- Stupid question, but are you saving the settings? go to GPU-Z and check the clocks when GPUs are under load.

- Does it only happen with only all three GPUs connected simultaneously? How does it look with only one GPU connected? Same mhash/s? (if it's higher then there might be a problem with your PSU)

[hmongotaku]

maybe it's the software? try downloading the latest? the phatk 3% mod really helps for me in windows 7. it goes from 280-320mh/s to 312-366mh/s  If you want more I suggest water cooling & volt-modding.