Apple's A4 Chip Inside the iPad Is Just an ARM Cortex A8 Clocked At 1GHz?
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Remember how a lot of people believed that the Apple A4 chip inside of the iPad was supposedly the ARM Cortex A9 dual-core CPU? Well, it looks like that might not actually be true. According to the latest report, the A4 could actually be an ARM Cortex A8 chip clocked at 1GHz. It's also working with a PowerVR SGX GPU. Apparently, it's so responsive because they took out the camera support and a bunch of other I/O support. This explains why Apple didn't mention anything about the chip at all.
“While it’s fun to speculate about what Apple didn’t include in the A4, the ultimate point is this: with one 30-pin connector on the bottom and no integrated camera of any kind, the A4 needs a lot less in the way of I/O support than comparable chips that are intended for smartphones or smartbooks. This means that the A4 is just a GPU, a CPU, memory interface block (NAND and DDR), possibly security hardware, system hardware, and a few I/O controllers. It’s lean and mean to a degree that isn’t possible with an off-the-shelf SoC.” ArsTechnica
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