hi guys,
sorry when i posted false information, i wouldn't fooling anybody.
But my personal erxperience shows me, that i couldn' t mine with my 4 x 280x, 8gb ram, win7 64 and the given config settings. just got sicks and deads.
So i reduced the -R / buffer-size parameters and than it was working, with the half of the destinated hashrate. so this was unlucky.
Than i remembered that, already in the past, there were discussions about system memory. So i took of two gpus and tried again with the best settings and it was working nicely.
therefore i asked a friend to lend me some system memory, that i have 12gb now. i tried again with my 4 gpus, and now no sicks and deads anymore.
So just my personal erxperience. i'm not the pro here, definitly.
i would just help springdev because his problem sounds simular to mine.
when it's possible to mine with lesser system memory, than please someone post these settings.
i'm interested too, because i can give back the memory to my friend
You can mine without a problem with 8 gigs just lower your memory clock and either double your rI and buffer size or use -g 2 as a parameter it will work trust me.
P.P By memory clock i mean the gpu mem clock.