Christopher Low wrote on Jul 31^st, 2012 at 7:57am:

The most interesting new feature of P3D for me will be the 64bit compatibility. I suffer from OOMs (out of memory errors) in FSX when flying in a handful of extremely dense scenery areas (eg. London with VFR London X and UK2000 Heathrow Xtreme at maximum detail levels), and it is annoying. This would be solved instantly if the simulator could take advantage of my 8GB RAM.

Now this makes me happy.

I have been saying for years that we've got 64-bit processors and no software. Unfortunately 99% of the population believe that all you need is a 64-bit OS. Finally a move forward from Far Cry2.