Air vs Pro Performance (i7 5650u vs i5 5257u)

Discussion in 'MacBook Pro' started by manwinder, Apr 16, 2015.

  1. manwinder macrumors newbie

    Feb 12, 2015
    Hey guys, so i was wondering why is it that a 15 watt (i think) CPU is on par or out performs a 28 watt CPU. Looking at the benchmarks the i7 Air processor usually is around or above the i5 Pro scores.

    Now is this because of say the turbo boost and that for short periods of time the i7 (air) can perform just as well as the pro, but just not for extended periods of time? Or is this some weird efficiency thing. I would love a pro with a 15 hour battery life running an i7 Air (since it performs just like the i5 in benchmarks). Is my logic invalid somewhere?

    Benchmark here:
  2. locksmack macrumors member

    Mar 6, 2012
    Yep, higher turbo boost, thanks to being a higher binned chip. The Airs can actually sustain turbo boost for long periods of time, plus I think the i7 has an extra mb of L3 cache over the i5.
  3. manwinder thread starter macrumors newbie

    Feb 12, 2015
    thanks for the reply, makes sense

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