iPad's innards exposed via X-ray

Look right inside the beating silicon heart of the iPad

Not only has the new Apple iPad been torn apart by the team over at iFixit, it has also been X-rayed, to allow us all a much closer look at what is inside the new device from Cupertino.

iFixit, working with reverse engineering firm Chipworks, tore apart and X-rayed the iPad's central processing hub.

Package on package

The resulting findings confirm that the A4 is built using a "package on package" method, so the 256MB of Samsung-provided SDRAM sits right on top of the CPU, which is reductive to latency and energy use.

iFixit concludes that the iPad seems to be running on a Cortex A8 – but Engadget notes that "their assertion that it couldn't be a Cortex A9 MPCore inside is inaccurate, as those chips also come in single-core options.

It will be interesting to compare performance with Samsung's own Hummingbird chip - designed by Intrinsity, the chip company Apple is rumoured to have recently acquired.

Via Engadget and iFixit