First of all I know most of the advantages of P3D v2 vs FSX but mine is a different condition because I dont use a high rig like most of the people uses. I am using a different setup than most of the people which can be seen in my profile. The fact is I have 650m GPU and I know P3D is much more depended on GPU than CPU so will it make any performance improvement for me or it will stay the same because I don't have a powerful GPU. Can someone give a technical look and help me before I waste my time If it doesn't worth it. I am using DX10 in FSX so try to compare the performance considering it. Thanks.

Try it then you'll know. Your GPU need to have DX11 else P3D v2 wont work.

Look at this thread. http://forum.avsim.net/topic/427363-512mb-gt640m-will-work-on-p3d-v2-anybody-can-help-to-comment/

Spirit

There's a money back guarantee so just try it and decide for yourself.