okay, so I don't have a sapphire Flex, I just have the base 6870. I mentioned the Flex because I would like to crossfire one day and wouldn't mind setting up the flex as my new primary and my base as the secondary card.
so with the base 6870 am I a little more limited to a dual moniter set up and tweaking with settings everytime I want to get something on my 42?
Yes, unless you invest in an active display port to DVI adapter. In which case, you can enjoy the 3 displays in your current 6870. If you do, be mindful of what display port your current 6870 have i.e. mini or normal size.