Hi all, first post here but will probably end up spending more time here than is good for me. I've been tasked with helping putting together a flight sim for the local air cadet sqdn at which I'm a civilian instructor. I'm fairly pc literate, been building pcs for about 10 years now, but pcs specifically for the use of flight sims is virgin territory for me.the system the powers that be have in mind is at least a 3 screen setup using the resolutions in the title. I'll be using the following hadware with these:Intel I5 sandybridge, overclocked to around 4.2ghz - 4.5ghzAsus P8Z68V2 x 4gb DDR3 memory (not decided on brand yet)850w - 1000w psu (good quality for stable 12v rails)1t/b internal harddrivehuge case, plenty of fans (probably coolermaster CM690)Saitek yolk, throttles and rudder pedalsWin 7 (64 bit, it'll run some other flight games as well)and lastly, an nvidia graphics card.I was initiallly thinking of going ATI 6950 Xfire, BUT, having seen that virtually no-one here would recommend ATI, I've decided that Nvidia is the way to go, which leaves the question, which one?Would a GTX 570 / 580 have enough grunt to power all three screens to for acceptable smoothness (I get the impression that framerate is not as important as "smoothness), run with at least X4/ X8 AA with the ingame graphical settings set reasonably high (or so it at least looks nice), would one of these cards 570/ 580 be able to run three screens smoothly or would I be looking at some form of Sli?They might even decide to have a forth screen for the instrument panel, so could this be run from a secondary card, say 9800gt, or am I expecting too much?Sorry about the long post but I needed to try and get as much relevant info across as possible.What do people here think/ advise?