不...storagereview 認為根本不會變速
理由是難度太高而且不可能省電
現在產品皆只有5400 rpm,
所謂的 5400-7200rpm 是只也許將來其他aacs model 可以再出 7200rpm 版

http://www.storagereview.com/1000.sr?page=0%2C1

Under "Rotational Speed," the manufacturer cites "IntelliPower (5400 to 7200 RPM)." This does not mean the drive dynamically changes its spindle speed during operation... indeed, such a feature would entail considerable mechanical engineering and would in many ways defeat the point -- rapidly accelerating and decelerating the spindle's speed would increase rather than decrease net power draw.


上篇連結失效
現在補上freq analysis圖片





90Hz -> 5400rpm / 60sec/min
120Hz -> 7200rpm / 60sec/min