T2 DVD, why does it need such a comp?

I was at work today and noticed on the the new T2 - Extreme edition it had a Full Length High Def PC version. For the system requirements it listed:

3GHZ processor
512md Ram
128mb Video Card
:eek:

Im not quite the movie buff, but why does it require such a monster to play this version of the DVD?

Maybe it has some special features or something that are exclusive to the PC. Maybe they are like really graphical or something.

It's not the special features, It's the video. Have a look at the 1080p HDTV video from Microsoft's website. Link :)