I'm looking to upgrade my XFX HD 6870 2GB card with http://www.newegg.com/Product/Product.aspx?Item=N82E16814131446 in crossfire. It looks like this would be an ideal solution as it gives me 3 gpu's to get around micro-stuttering, while still giving awesome performance. I know that crossfiring a 1GB card with a 2GB card will result in a default 1GB of usable RAM thus rendering the 2GB card useless. I also know for a fact that both GPU's on powercolors card are 1GB of RAM each.
So here's my question:
Will I see only 1GB of usable RAM when crossfiring the XFX HD 6870 2GB with the PowerColor AX6870X2? Or does both GPU's being on one board somehow combine both GPU's RAM and make this card efficiently use 2GB or RAM?
I know that normally 2GB vs 1GB renders no change in performance, but I plan on doing eyefinity across 3 23" displays and therefore I feel like the extra RAM will be handy for this larger resolution.
So here's my question:
Will I see only 1GB of usable RAM when crossfiring the XFX HD 6870 2GB with the PowerColor AX6870X2? Or does both GPU's being on one board somehow combine both GPU's RAM and make this card efficiently use 2GB or RAM?
I know that normally 2GB vs 1GB renders no change in performance, but I plan on doing eyefinity across 3 23" displays and therefore I feel like the extra RAM will be handy for this larger resolution.