On windows I think you use 'setx', stick these at the beginning of the batch file you use to launch the miner:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
Should I edit C:\Program Files (x86)\Miner\Simple GPU Miner\sgminer ?
Currently, C:\Program Files (x86)\Miner\Simple GPU Miner\sgminer has start.bat as:
setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_USE_SYNC_OBJECTS 1 sgminer -k darkcoin -o
http://elitter.net:7903 -u Xqtkkpugx3voWqFrwrUF8op6xbwLAJo1zX -p p -o
http://q30.qhor.net:7903 -u Xqtkkpugx3voWqFrwrUF8op6xbwLAJo1zX -p p -I 13 --balance
... although my wallet address is XhBQPDWwqR4opAXtsuu7fYLXGhLotgnV8J
Should I change the .bat to reflect my correct wallet address?YES. Otherwise anyhing you mine will go to someone else's wallet!
for latest (I think) sgminers. 290 cards should be pushing ~5MH