Hi Lee, search results show:
Minimum System Requirements - Windows XP SP2 / Windows Vista
- Processor: 1.0 Ghz
- RAM: Windows XP SP2 - 256MB, Windows Vista – 512MB
- Hard Drive: 14GB
- Video Card: 32MB DirectX 9 compatible
- Other: DX9 hardware compatibility and audio board with speakers and/or headphones
- Online/Multiplayer Requirements: 56.6 kbps or better for online play
from
Flight Simulator X
It does not specify Processor type (such as Intel P-4, AMD, or Intel Celeron). However, the faster CPU you install, the more RAM you will want to increase also. For gaming, I would personally recommend no less than 1024 MB with a 256MB VGA AGP card (nVidia or ATI).