對於Theater 750其實有兩個還蠻有趣的

Receive world wide broadcast signal support for NTSC, PAL/SECAM, ATSC, ClearQAM and DVB-T. ATI Theater™ HD 750 brings reliable reception optimizing the amount of digital TV content available with picture clarity comparable to high-end HDTVs.
看來去美國的時候帶著也能看ATSC??

Combine ATI Theater™ HD 750 and an ATI Radeon™ Premium graphics card and experience mind-boggling GPU accelerated transcoding speed. Now you can watch, record, and convert fast and seamlessly with the best playback quality8
這個看起來是邊看邊轉檔的功能，之前550其實就自動幫你轉成MPEG2，這代就把這功能放到GPU身上了