iPhone6sのA9チップもデュアルコア?Appleがデュアルコアにこだわってきた理由


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次期iPhone6sにA9チップ搭載予定?!
今回はAppleがどうしてデュアルコアにこだわってきたのかというと、

iPhone6S

iPhone6/6 Plusの発売時、AppleのPhil Schiller上級副社長は、多くの時間をA8プロセッサーの説明に費やしています。その中で特に強調されたのが、前世代のプロセッサであるA7からの進化です。

事実として、本件については調査会社であるArs Technicaが2014年9月に実施した調査結果で証明されています。同社の報告によれば、A7プロセッサにおける実験では、起動直後には1.3GHzのパフォーマンスを実現していたにも関わらず、CPUに負荷をかけた10分後には967MHzまでパフォーマンスが低下してしまった、としています。一方で、A8プロセッサで同様の実験をしたところ、起動直後の1.4GHzから、1.167GHz~1.2GHzまでしかパフォーマンスの低下がみられなかったとしています。


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結果、A7・A8プロセッサともにデュアルコアではあるものの、Appleは同コア数の中でパフォーマンスの向上を実現したこととなります。[本文]


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