witeken
Diamond Member
- Dec 25, 2013
- 3,899
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A8X single threaded performance is getting stupidly fast. With a ~4W chip at 1.5 GHz they are hitting 70% of the performance of a 2.6 GHz 15W i5? Put that in a Mac already!
Your 2.6GHz number is the boost clock speed. The base speed is closer to 2GHz, so in short workloads, the chip will be a lot slower than your 1.4x number. And because it's made on a planar process, it will consume a lot more.
Broadwell and Skylake will simply widen the gap.
BTW, comparing TDP of a chip to compare performance per watt is ludicrous. People seem to accept it blindly, but when AMD did the same (performance/TDP) with its Puma+ chip, that was suddenly not fair, interestingly enough.