История Apple A7 Teardown Шага #6

Возврат к шагу #6

Отредактированно Miroslav Djuric - 23 сен 2013 г.

Правка одобрена автор Miroslav Djuric

-	[* black] Chipworks confirmed their astute suspicions by using an electron microscope to measure the gate pitch—the distance between transistors—revealing the 28 nm process.
-	[* icon_note] For scale, 28 nm is roughly the diameter of ten strands of human DNA, or .00028 of the diameter of a human hair. That's tiny!
+	[* black] Every little hump (through which you see that yellow line) is a transistor. By measuring the total distance between ten of these transistors, we can estimate a chip’s manufacturing process—essentially how tightly the manufacturer can pack in all that processing power.
+	[* black] The techs at Chipworks took out their [nano]meter stick and measured the distance between these transistors, which at first seemed very similar to the A6.
+	[* black] But wait! It turns out that the A7′s “gate pitch” — the distance between each transistor — is 114 nm, compared to the A6′s 123 nm.
+	[* black] Those 9 nm are a bit deal. It turns out that the A7 is made with the same 28 nm process as the eight-core Samsung Exynos 5410, the current flagship CPU for Samsung’s own Galaxy line. (Compared this to the A6′s old 32 nm process.)
+	[* black] So what does that translate to? Applying some mathematrickery, this seemingly small change equates to having the same computing power, but in 77% of the original area. And given that the A7 processor is even larger in area than the A6, that means even more processing power to lead a healthy, smartphone-laden lifestyle.