Tell me why the site requirements of some games are less on Windows XP And for example, 7 more?

In general, the case in RAM. Looked at the system requirements Cs Go. There for XP 1 GB of RAM. And for VISTA / 7 2 GB. This is because Vista and Seven have a theme with gadgets? The effects are all sorts of shadows. I heard that this can be removed and will be like on Windows 98. Is this the way out?
There are 2 answers
Anton Eremin
Anton Eremin
Answered on April 3, 2015 15:05
The point is the directx version. In windows xp above directx9, the game will not start, just the operating system does not support. But starting with Vista, directx 10 and 11 appears. In addition, most games today either determine what hardware you own or the game is imported from the game console and is not particularly demanding.
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Pervert
Pervert
And if for example for 7 you need 2 gig for XP 1.