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Title: 6950 Sapphire xtreme - It goes no further 320mhas Post by: oo-oo on September 27, 2011, 11:29:04 PM 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? Title: Re: 6950 Sapphire xtreme - It goes no further 320mhas Post by: worldinacoin on September 27, 2011, 11:36:21 PM Try to do a google and change the flag setting, it does help quite a bit.
Title: Re: 6950 Sapphire xtreme - It goes no further 320mhas Post by: malevolent on September 28, 2011, 02:07:20 PM - 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) Title: Re: 6950 Sapphire xtreme - It goes no further 320mhas Post by: hmongotaku on September 28, 2011, 07:10:44 PM 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.
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