Nvidia 6GB cards and AMD 8GB cards supported. 6GB cards in Windows10 may not work as WIndows steals some of the memory.
ah okay thank for the info i got some 4 GB and 8 GB ram modules laying around will try it tomorrow ? will be 8 enough for 6 GPU GTX 1070 mining or is 16 gb ram needed ?
I, and the quote above were talking about the GPU on board memory. You could definitely try adding more system memory, but I don't suspect that is the issue. I think your setup would likely work as-is if you were using Linux, and possibly an older version of Windows. I also think if you wait a bit and mine something else, the issue will get resolved with a future miner software update.