PowerPC G4

Multi tool use
PowerPC G4是蘋果電腦使用的第四代PowerPC微處理器之統稱。
使用G4處理器的麥金塔電腦均以G4作為產品名稱,包括桌上型的Power Mac G4、筆記簿型的PowerBook G4及iBook G4等。除此之外,eMac、iMac、Xserve及Mac mini均有使用G4處理器。
PowerPC 7400
Motorola PowerPC 7400是首款推出的G4處理器,於1999年夏季推出,時脈速度為400至500MHz。
該款處理器晶片內有1050萬個晶體管,使用了Motorola的0.20微米 HiPerMOS6製程,晶片面積為83mm2,並以銅連線技術作為賣點。
由於當時Motorola生產的7400系列處理器未能達到蘋果所要求的時脈,使得其時脈由400、450和500MHz降低為300、350和400MHz,也影響了蘋果與Motorola間的關係,蘋果方面也向IBM尋求協助生產7400系列,最後其500MHz版本要延期至2000年2月16日推出。
產品設計
7400的設計大部份由Motorola和蘋果合力製作,而AIM聯盟中的IBM則沒有參與設計7400。
參考資料
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