I am wiling try wolf CUDA miner, but since it is not compiled.... ( I know GT 640 is "small card" ) but I am interested in trying that card: Assume that will give more hash rate then CPU and it consumed less power.
So please release exe file....
Second after reading and re reading this post from top to end I manage to get working two card same time on solo mining
Hash rate with lowered voltage and slighty OC GPu is
hr: 1763224, efficiency: 105% (shares 332/333, blocks 0/0)
hr: 1763208, efficiency: 105% (shares 332/333, blocks 0/0)
hr: 1763193, efficiency: 105% (shares 332/333, blocks 0/0)
hr: 1763177, efficiency: 105% (shares 332/333, blocks 0/0)
hr: 1763161, efficiency: 105% (shares 332/333, blocks 0/0)
hr: 1763146, efficiency: 105% (shares 332/333, blocks 0/0)
hr: 1763130, efficiency: 105% (shares 332/333, blocks 0/0)
hr: 1763202, efficiency: 104% (shares 332/333, blocks 0/0)
hr: 1763187, efficiency: 104% (shares 332/333, blocks 0/0)
hr: 1763171, efficiency: 104% (shares 332/333, blocks 0/0)
2014-Aug-10 15:25:20.880570 [miner 0]Share found 1005573449, <93812e1
hr: 1763243, efficiency: 104% (shares 333/334, blocks 0/0)
hr: 1763227, efficiency: 104% (shares 333/334, blocks 0/0)
hr: 1763212, efficiency: 104% (shares 333/334, blocks 0/0)
hr: 1763196, efficiency: 104% (shares 333/334, blocks 0/0)
hr: 1763267, efficiency: 104% (shares 333/334, blocks 0/0)
So lets see how time to find block. Then I will try on pool
Thanks for this miner!