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I just got a second 7950, and was wondering how to incorporate it into cgminer, because when i open cgminer, i still get the same hash rates as before i had two gpus. I'm not sure how to officially enable crossfire either, I just kinda plugged them both up and put a crossfire link between the gpus. 

 

My CGminer bat file:

 

setx GPU_MAX_ALLOC_PERCENT 100

setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://ltc.give-me-coins.com:3334 -u DeShack96.1 -p ltc1 --shaders 1792 -I 18 -w 256 --lookup-gap 2 --thread-concurrency 24000 --gpu-engine 1100 --gpu-memclock 1500 --temp-target 78 

One 7950s' all I need...

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If the bridge is not installed crossfire will be disabled.  You should be able to leave you .bat the same and both cards will run, but you may need to tweak each card differently for best performance. 

You are free, act like it~Warfairy. Moar guns. B) #3Dprinting

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