I have been using flight sim since the Flight Sim 98 days. Now I'm on FSX boxed and i run the following with phenomenal success:
Intel Core i7 4790K
500W Corsair PSU
Gigabyte Z97 Gaming 7 MB
16GB Crucial Callistic Memory
EXGA GTX 750 Video
Samsung 850 Evo 500GB SSD
I use the PMDG 777 and 737NGX, Active Sky Next, Some latin VFR and FSDreamTeam add ons. While running that I use vPilot, PFPX, GSX, EzDok,