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Zero.

While the performance of Ryzen is pretty good, the overall power consumption and efficiency (idle, semi-load and load) i still no where near Intel. They won't kill 2-3 hour battery life on Macbooks for a AMD CPU.

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How do you know this? The only Zen-based chips we have any information about are desktop parts and we don't have any power usage benchmarks.

The Raven Ridge chips, which are meant for laptops, would have the added advantage of removing the need for a discrete GPU in the 15" MacBook Pro. Switching to AMD seems unlikely but I'd be interested if they did.

Absolutely, nothing is really known at this point. The leaked power consumption results that we have show that a Ryzen engineering sample uses slightly less power than comparable Intel CPU's (i7 6900k). But we don't know if the leak is real.

So let's wait for real benchmarks (at march 2) before saying Intel is better in power consumption @ sparkling. But keep the following in mind: https://news.ycombinator.com/item?id=13736809

They could bifurcate their lineup and put ryzen in the desktops or is that silly too?

Looking at previous lineups, they tend to use the same chips for a generation. E.g. when they switched from AMD GPUs to Nvidia, they did it on all products.

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