Here are the minimum system requirements to run X-Plane 9 smoothly and efficiently without any crash, freeze, slowness etc. on any computer;
Minimum System Requirements:
CPU: 2 GHz+RAM: 1 GBGPU: 64 MB VRAM, OpenGLOS: Windows® XP™ or Vista™HDD: 70 GB
Please also have a look at other posts under “System Requirements” category to view & check if your computer system is powerful enough to run other games like X-Plane 9 smoothly.