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1  Bitcoin / Mining / Re: Optimizing ATI performance, 6950 in particular on: June 09, 2011, 12:38:41 PM

I have 6950 unlocked shaders, getting 408Mhash/s easily.
What I use:
MSI Afterburner - 1175v / 950 core / 450 mem / 60 fan (YMMV)
You might need to edit the config of Afterburner. Also you will have to lower the mem as low as possible, then close the app, then reopen. This will allow you to hit 450 mem. This was stable for me. 425 gave me artifacts. YMMV
guiminer flags -v -r5 -f1 -w128

Sorry if its sloppy I've been up for... 36hrs or something.




Thanks. I've tried this and I'm getting 332Mhash/s when running these. It's stable just isn't fast.

I'm using these cards http://www.newegg.com/Product/Product.aspx?Item=N82E16814127555&cm_re=6950-_-14-127-555-_-Product

I unlocked using OPs instructions, GPU-Z is showing shaders at 1536 unified. 

Any other ideas on this?
2  Bitcoin / Mining / Re: Optimizing ATI performance, 6950 in particular on: June 09, 2011, 03:44:44 AM
I have 4 6950's and unable to get above 362mhash/s. I'm running unlocked shaders with 11.5 drivers and have tried all different clock/mem/volt/miner settings and unable to go any higher. I would like to get 400 per card. Am I missing something?

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