Hi guys, before starting I know this is a common question being asked!
But I have my own situations and that's why I'm asking for your pro tips maybe from own experience or perhaps from facts!
I'm planning to have this rig that plays on a 1920x1080 resolution. I'm not planning on going multi monitor. And I am into SLI/CF, but maybe not right away, I'm still gonna test if I would be needing the extra juice for another card.
I'm not so sure how these cards are sold but local stores here sells GTX 560 and 6950 1GB identically.
And also theres the 6950 2GB which only has a $23 premium. These AMD cards are Sapphire which means I would be able to unlock the 2GB to 6970. (I've read a review where different brands of 6950 where being unlocked and Sapphire gave a nice 100% success rate out of 100+ cards)
Also please take note that I'm an avid fan of Blizzard games (SC2,WoW, Diablo 3 soon!) which tends to favor NVIDIA a lot! Making GTX 560 even better than a 6970 (I could be wrong... not so sure!). But that doesn't mean I only play those games, if I got this new rig, I would really love to play some bleeding edge graphics game so yeah I'm not even sure why I'm saying this and please don't get confused.
Finally, I said I am into SLI but if there is a nice reason to go a single 580 then please tell so. I'm not going into 580 SLi as I think that is overkill for a 1920x1080 single monitor setup unless valid reason appears OR if I just feel like doing so.....which is bad.
So given my situations and other facts such as driver support which then again I believe tends to favor NVIDIA and etc., which is the BEST BANG for the BUCK!?
I prefer to SLi cards that give better performance of the flagship card as it always leaves the ability to continue using the machine if one fails for some reason plus the cards can go into two different machines as and when they get replaced in the future, like my 8800GT's have been and my 7900GT's were before that.