Thanks a lot ;p do you think that with more ram it is possible to get higher hashrate?
No, not necessary ... yet...
Unless somebody creates a way to run higher tc on 4GB systems without increasing lookup-gap then on a 290 more is needed
I'm running 2 4GB and 1 2GB card in one machine that only has 4 GB system RAM. It can be done!
Sure it can - albeit slowly
What cards and what KH/s?