Hi everybody,I am at the point to upgrade my PC with a quad core CPU in order to get the 737 NGX running smoothly,Now the supplier of the hardware asked me to make sure that the PMDG 737 NGX software is optimized for quad core CPu operation,. Personally I don't see the point, but he insisted that I make sure that it is, otherwise I would have no benefit from the quad core just to the contrary, the software could even run more slowly than it is now.Present CPU: dual core 2.8Ghz - 4 Gb memory / OS is windows 7 64bit / grahic card is ATI EAH850 1GB GDDR5 video memory.I very much appreciate your help ,- thanks in advance.Pier