Does Windows version matter when building a game PC?

[Slimebeast]

Squilliam said:

Slimebeast said:

Squilliam said:
Just wait for Windows 7, it performs way better than Vista as Vista performs better than Windows XP and just run a virtual machine if you want to play any XP/98 only games. Thats what my next build will be like.

 

 Whats a virtual machine m8?

 

You can run another Windows version inside your Windows. So you could run Vista which runs a virtual machine of Windows 98 so you can play older games, say DOS games. @Bugrimer: Its more than that, Windows Vista runs the latest games better and its not just Direct X 10, its also every version of direct X after that. Windows XP is almost 8 years old, remember.

So this is something else than compatibility mode you are describing?

Is this an external emulator or built into Vista or how does it work? Or is u talking about something very elemental that Im just making compliacted now?