I have lots of money probably enough for 6990. I plan to get full hd 3d eyefinity. But will probably just stick with normal eyefinity with one 3d monitor. Will a 6970 be enough or should i go for a 6990? I plan to go for an xfx be card and liquid cool. Which amd manufacturer has the best warranty for people who plan to liquid cool. I heard that xfx was the onlu one who didnt invalidate warranty. Also, does the brand matter much?