This is the Minimum system requirement for FSX:
Component Minimum system requirement
Operating system: Windows 7, Windows Vista, or Windows XP Service Pack 2 (SP2)
Computer processor: 1.0 gigahertz (GHz)
Memory: 256 megabytes (MB) of RAM for Windows XP SP2
512 MB RAM for Windows 7 and Windows Vista
Hard disk space: 14 gigabytes (GB) available hard disk space
Video card: 32 MB DirectX 9-compatible video card (I suggest 1gb for Hd Graphics)
DVD drive: 32x speed
Sound: Sound card, speakers, or headset
Pointing device: Keyboard and mouse or compatible game controller (Xbox 360 Controller for Windows)
Internet connection for online play: Network adapter for LAN multiplayer gameplay
Broadband Internet access for Windows Live multiplayer gameplay
For Flight Simulator X Acceleration Expansion Pack
Component Minimum system requirement
Operating system: Windows 7, Windows Vista, or Windows XP Service Pack 2 (SP2)
Computer processor: 2.0 gigahertz (GHz) or more
Memory: 1 gigabyte (GB) or more of RAM
Hard disk space: 4 gigabytes (GB) available hard disk space
Video card: DirectX 9 (or later version)-compatible video card
128 MB or more video RAM, Shader Model 1.1 or later version
DVD drive: 32x speed
Sound: Sound card, speakers, or headset
Pointing device: Keyboard and mouse or compatible game controller (such as Xbox 360 Controller for Windows)
Internet connection for online play: Network adapter for LAN multiplayer gameplay
Broadband Internet access for Windows Live multiplayer gameplay
i suggest plasma because you can mount them and it is Hi Definition