I try to play Phoenix R\/C pro Flight Simulator and Realflight g5 on my p4 , Windows xp sp3 , 2.0 mhz , 2.5 gb Ram , PC with no look . everything really slow and unplayable . replace my old video card with this one and I be shock for the price and both Flight Sims work great . they where playable . realflight g5 take up some memory but Phoenix R\/C Simulator run with no problem . this be a great deal and can save you several 100 's of dollar on a new pc .