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Title: 6850 slowing down Post by: simon66 on May 08, 2012, 05:10:30 AM Hi,
So today I bought a 6850 Sapphire. I got another 5770 Sapphrise. 6850 = 201mh/s 5770 = 188mh/s Both cards are not overclocked. Running both should get me ~390 mh/s but the thing is that when I run both, my mh/s drop. My 6850 drops to ~140 mh/s. I use that card as my primary, meaning that I got both my monitors connected to it. Running it alone is fine, but running both makes it drop to around 140mh/s. Any help? Thank you! Title: Re: 6850 slowing down Post by: juggalodarkclow on May 08, 2012, 08:58:29 PM more info please (OS, mining software, mobo. et...)
Title: Re: 6850 slowing down Post by: oldDirty on May 08, 2012, 09:24:05 PM Guiminer?
If yes, 100% for shure you forget to set "miner1??" to GPU0 and "miner2??" for GPU1. Guiminer cannot set it automatically. Title: Re: 6850 slowing down Post by: check_status on May 08, 2012, 11:49:35 PM Which SDK are you using?
Which Catalyst drivers are you using? Which Miner are you using? Which OS/Version/bit are you using? The 6850 can get 240-250 MH/s with 850-900 engine, 300 memory. I don't know about the MH/s with 5770. Title: Re: 6850 slowing down Post by: simon66 on May 09, 2012, 05:19:19 AM Which SDK are you using? Which Catalyst drivers are you using? Which Miner are you using? Which OS/Version/bit are you using? The 6850 can get 240-250 MH/s with 850-900 engine, 300 memory. I don't know about the MH/s with 5770. SDK = I'm not so sure Catalyst = 12.4 Miner = GUIminer OS = Windows 7 Pro 64 bit and yes, I am setting my GPU1 to 1 worker and my GPU0 to another worker. Title: Re: 6850 slowing down Post by: oldDirty on May 09, 2012, 07:52:53 AM post a screenshots of the worker windows.
It it possible that the different Chipdesign of your GPUs ( Vliw4 and Vliw5 ) cause that prob? --- @ check_status, a stock 5770 produce ~180-200mh/s. Title: Re: 6850 slowing down Post by: check_status on May 09, 2012, 01:32:35 PM This may be useful to you.
https://bitcointalk.org/index.php?topic=57784 Title: Re: 6850 slowing down Post by: GernMiester on May 31, 2012, 02:30:18 AM GET RID OF 12.4 its crap should be the 1st reply... 12.3 works better and runs faster
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