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Title: Help with 3x7950 and 7970 Post by: jorginto on January 31, 2014, 04:20:01 PM Hey guys, I just bought Gigabyte GV-R797OC-3GD rev 2.1 7970 and I dont know how to set it up for I 13 tc 8132 and g2 in my cgminer bat file together with 3 7950's ( I wanna keep them I 17, tc 22400, g 1). My current configuration looks like this (7970 is gpu 4 and it's hashing around 560 right now):
-Q 0 --expiry 10 --scan-time 5 -I 17,17,17,17 --thread-concurrency 22400,22400,22400,24000 --gpu-threads 1 --lookup-gap 2 --worksize 256 --gpu-engine 1100,1100,1100,1050 --gpu-memclock 1500,1500,1500,1500 --gpu-powertune 20,20,20,20 --gpu-fan 68,65,65,65 --temp-cutoff 85,85,85,85 Title: Re: Help with 3x7950 and 7970 Post by: atp1916 on January 31, 2014, 04:49:18 PM Use SGMiner. SGMiner sets up just like CGMiner, except you do not include the --scrypt parameter. Link is in my sig.
It has a fix for CGMiner's inability to run different --gpu-threads (-g) cards together, as well as allowing a single -g with multiple parameters (you had to do separate -g flags for each card in CGMiner). Your config should look something like this: Code: -Q 0 --expiry 10 -d 0-2 -d 3 --scan-time 5 -I 17,13 --thread-concurrency 22400,8132 --gpu-threads 1,2 --lookup-gap 2,2 --worksize 256,256 --gpu-engine 1100,1050 --gpu-memclock 1500,1500 --gpu-powertune 20,20,20,20 --gpu-fan 68,65 --temp-cutoff 85,85 Title: Re: Help with 3x7950 and 7970 Post by: jorginto on January 31, 2014, 05:31:12 PM When I'm adding -d 0-2 and -d 3 cgminer keeps shutting down. I tried to do -d 0-2 7950's settings than -d 3 and 7970 settings. This way it starts, but runs only -d 3 settings for all cards. This is frustrating. Need to try with SGminer.
Title: Re: Help with 3x7950 and 7970 Post by: jorginto on January 31, 2014, 06:36:27 PM SG miner works without -d command. I'm using only comas but with I 13 g 2 and tc 8192 my 7970 is hashing only at 500 rate... damn.
Title: Re: Help with 3x7950 and 7970 Post by: jorginto on February 01, 2014, 08:10:49 AM So far I disconnected all 7950's and installed 7970 in PCIex16 slot. Works ok. I get around 720khash 1090/1500 I 13, g 2, TC 8192
After putting everything together again, this is what I get, GPU 3 is 7970 with exact settings (I also changed display to PCIex4 where 7970 is installed, but it doesnt change enything.) https://i.imgur.com/gZxqgwb.jpg Another thing is that with 4 cards my PCIex8 slot doesn't work, so my current set up is PCIex1 - 7950, PCIex16 - 7950, PCIex1 - 7950 i PCIx4 - 7970. GA 990 XA - UD3 + 4GB ram, sempron 145 i WIN7x64 fully updated |
