2007年的山姆大叔網站有篇介紹：
http://www.tomshardware.com/reviews...ar-gp,1703.html

針對轉速部份節錄如下(第1頁)：
Reducing a component’s operating speed typically is the easiest way of achieving power savings. Obviously, this is something that can be applied rather easily to hard drives, as it isn’t very difficult to use spindle motors that can operate at variable speeds. WD goes down this path with its Caviar GP drives, as the firm adjusts the rotation speed anywhere between 5,400 RPM and up to 7,200 RPM dynamically for each model.

最後兩句有提到，GP硬碟轉速在5400~7200之間調整，但語意說得不太清楚，
是指GP系列不同型號硬碟轉速不同，還是指每顆硬碟都能動態調整，滿容易讓人混淆。


後來比較新的報導就統一口徑定調在5400RPM了，所以不曉得當初問題是出在哪裡。