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by ucha
4530 days ago
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The Macbook Air runs on a CPU with a nominal TDP of 15W vs 28W for the Macbook Pro Retina. I'm pretty sure a Retina display could run with the current Macbook air CPU given that they share the same integrated GPU. That will make a difference. |
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They don't share the same integrated GPU; the MBA is a HD5000; the 13" Retina is a HD5100, the 15" Retina is a HD5200.
The major practical difference between the HD5000 and HD5100 is clock speed; while they have a similar theoretical cap, at full speed the HD5000 uses 22W (more than the TDP of the chip it lives in!), so in practice generally operates at far lower speeds.
They could probably get away with a HD5000 powered Retina thing, but screen power consumption would still be a factor. IGZO should deal with this sooner or later, though.