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[] Apple TV A5 SoC is 32nm, Harvested dual-core A5 - - different look at memory


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Old 12-04-2012, 04:31 PM   #1
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[] Apple TV A5 SoC is 32nm, Harvested dual-core A5

The 3rd generation Apple TV ships with what Apple tells us is a single-core A5 SoC. After delayering the chip to the transistor gate layer in the new Apple TV, Chipworks just confirmed that the SoC is actually a 32nm dual-core part - presumably with one core disabled.

The iPhone 4S' A5 and the A5X used in the new iPad are both built on Samsung's 45nm LP process. This new A5 in the Apple TV is built on Samsung's 32nm High-K + Metal Gate (gate first) process. When transitioning to a new process node, it's always advisable to have a "pipe-cleaner" part. A small, not overly complex design that you can use to test the process and use to discover any bugs. It also helps if this is a lower volume part as there's always a risk of the new manufacturing process being unable to deliver high enough yields. Apple testing Samsung's 32nm process in the new Apple TV makes a lot of sense. There are far fewer Apple TVs sold than iPhones or iPads, so any troubles on the manufacturing side shouldn't really matter. Furthermore, Apple could also ship die-harvested (1 core disabled) 45nm A5s into Apple TVs if things get really bad.

Either way, it's clear that Apple is testing Samsung's 32nm process and this is likely the node we'll see debut in the next iPhone. As our own Brian Klug pointed out, this is the same part that's used in the new $399 version of the iPad 2 (iPad 2,4). Assuming Samsung's 32nm HK+MG process isn't horribly leaky at this point, we should actually see somewhat better battery life out of this new iPad 2 vs the older 45nm version.

CPU Specification Comparison CPU Manufacturing Process Cores Transistor Count Die Size Apple A5X 45nm 2 ? 163mm2 Apple A5 45nm 2 ? 122mm2 Apple A5 (3rd gen Apple TV) 32nm 2 ? 69.6mm2 Intel Sandy Bridge 4C 32nm 4 995M 216mm2 Intel Sandy Bridge 2C (GT1) 32nm 2 504M 131mm2 Intel Sandy Bridge 2C (GT2) 32nm 2 624M 149mm2 NVIDIA Tegra 3 40nm 4+1 ? ~80mm2 NVIDIA Tegra 2 40nm 2 ? 49mm2

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