I have ordered X-Plane 10, and I am intending to upgrade some of my PC components. At the moment my Specs are:- CPU - Core2Duo E8500 3.16Ghz GPU - ASUS GeForce 9800GT 1GB Mem - 8GB 800Mhz M/B - ASUS P5K-VM OS - Win Vista 64bit I am gettting pretty good performance in XPX Demo, but unable to use shadows, reflections and HDR. I do have Very High texture resolution, objects and roads set at tons, and airport detail and detail draw distance at high. This is with RW weather and reasonable cloud settings and I am getting 25 - 45 fps. I am intending to upgrade the CPU to a Core i5 2500 3.3Ghz, but I do not want to overclock so will get the locked CPU and use the boost when under load. The motherboard I am looking at is ASUS P8Z68-V LX, any advice here would be welcome. Memory wise I want to get 1600Mhz but don't know whether to get 4GB(X-Plane is 32 bit) or 8GB(bearing in mind I have a 64 bit OS. Any advice welcome? My main area for help/advice is the graphics card. I have always used nVidia, but I feel there are some good ATI cards out there(Radeon 6870). Is it best to stick with nVidia bearing in mind I have a Win OS? If so I think looking at my budget I would be looking at a GTX550/560, any thoughts? Any advice with this would be very welcome. Cheers Simon