Ok, so let me first explain, I have had a Gigabyte r9 270x running 420-470khashes for the last two weeks, I recently bought a sapphire r9 270x 2GB yet with the settings I have for my Gigabyte it is only getting about 50 khashes. I'm so confused could someone please help me?
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o stratum+tcp://flo.smalltimeminer.com:3344 -u USERNAME.WORKER-p PASSWORD --lookup-gap 2 -w 256 -I 18
You need to specify settings for each card sperated by a comma
Ie.
-I 18,18
Therefore
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o stratum+tcp://flo.smalltimeminer.com:3344 -u USERNAME.WORKER-p PASSWORD --lookup-gap 2 -w 256 -I 18,18
lookup gap and -w apply to all cards though