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Originally Posted by twitchyzero
i'm not sold on mobile gaming yet but Metal is a nice move
i wonder if the A8 will be more powerful AND efficient compared to the 64-bit version of Tegra K1
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Nvidia always promises the moon with Tegra and they never seem to live up to the hype. It's no wonder most people are taking the "wait and see" attitude.
The K1 64bit is supposed to be a custom ARMv8 chip (like the A7), but nothing in the pre-release information shows it to be any more advanced than the A7 (though it looks to be significantly better than the A57 64bit cores from ARM themselves). It appears Nvidia has done a lot more than just "tweak" ARM reference designs (like Apple did with earlier chips and Qualcomm did with their Snapdragons) and the K1 is a truly custom design.
The K1 is dual core and clocked higher so it should outperform the A7, but that's not saying much since the A7 will be a year old by the time K1 hits the mainstream. If Apple again doubles performance with the A8 (like they have been doing every year now for 3 years) then it should easily outperform the K1.
Not that it matters since you can't buy an A7/8 to use in your devices. That leaves Nvidia, Samsung and Qualcomm. Qualcomm already stated they're using A57 cores in their flagship 64bit processor for early 2015, so they're already behind Nvidia and their custom cores. Samsung has a license to use ARM designs or make ARMv8 compatible processors, but Samsung hasn't said if they'll also use A57 cores or come up with their own. So it looks like Nvidia will have the fastest ARM processor you can buy, with Qualcomm and Samsung playing catch up.