Anandtech的說法是Win8跟Xbone為了省電 所以硬體音效加速又回來了
So an interesting aside on sound: starting with Windows Vista, MS took out hardware audio acceleration to move the audio stack into software for stability and consistency purposes. With Win8 and Xbox One, hardware acceleration is back in the name of power savings and being able to use XB1's own audio DSPs
http://www.anandtech.com/show/7368/...wcase-live-blog
結論: 這次AMD搞了張超強音效卡...強到可以當顯卡用...
