No idea on specs yet, though Luthier did state a while back that he was running on mid range machine for screenshots.
I suppose, like all flight sims i've ever played, it will be down to CPU rather than GPU...
Really frustrating, TBH, played LOMAC the other day and it really doesnt run any better on my Triple Core 3.7GHz with a 1Gb 4850, than it did on the PC i first played it on (P4 3Ghz with a 256mb Radeon X850XT) back in 2005/6..
The min/max frames are just about identical, with only 1 core being used....