Hello Guys,

I can share some mining configs with you.

First you have to download Yacminer - https://github.com/Thirtybird/YACMiner/releases/download/3.5.0-yac2/yacminer-3.5.0-yac2-x86.zip
These configs works on systems with more than 4GB RAM.

Config for 290x - yacminer --scrypt-chacha --nfmin 4 --nfmax 30 --starttime 1389028879 --worksize 128 -g 1 --lookup-gap 3 --buffer-size 3532 -R 10496
Config for 290 - yacminer --scrypt-chacha --nfmin 4 --nfmax 30 --starttime 1389028879 --worksize 128 -g 1 --lookup-gap 3 --buffer-size 3420 -X 32
Config for 280x - yacminer --scrypt-chacha --nfmin 4 --nfmax 30 --starttime 1389028879 --worksize 128 -g 1 --lookup-gap 3 --buffer-size 2590 -R 7680
Config for 280 - yacminer --scrypt-chacha --nfmin 4 --nfmax 30 --starttime 1389028879 --worksize 128 -g 1 --lookup-gap 3 --buffer-size 2394 -X 32
Config for 270x - yacminer --scrypt-chacha --nfmin 4 --nfmax 30 --starttime 1389028879 --worksize 128 -g 1 --lookup-gap 3 --buffer-size 1648 -R 4864
Config for 7950 - yacminer --scrypt-chacha --nfmin 4 --nfmax 30 --starttime 1389028879 --worksize 128 -g 1 --lookup-gap 3 --buffer-size 2394 -X 32
Config for 7970 - yacminer --scrypt-chacha --nfmin 4 --nfmax 30 --starttime 1389028879 --worksize 128 -g 1 --lookup-gap 3 --buffer-size 2590 -R 7680