Apple Tablet: A Deep Dive Look Into the Likely Tech Inside
Posted 08/17/2009 at 1:37pm
| by Jason Cross
Modified OS X for the Win.
Will the iTablet run OS X? Yes. Sort of. Apple claims the iPhone runs OS X, after all, though that device certainly can’t run the same applications you run on your Mac. We think the iTablet will more likely run a souped-up version of the iPhone OS, still centered around multitouch and downloadable apps from the App Store. If the processor architecture is right, it might even run actual iPhone apps. Still, you should expect custom applications that take advantage of the larger screen, along with plenty of interface changes. (Can you imagine a 10-inch screen peppered with tiny iPhone app icons?)
We’d be shocked if the iTablet didn’t include a more full-featured iTunes store built in. In fact, Apple should probably change its name to iStore or iMedia, because “Tunes” is going to be an even less accurate descriptor of a store that already sells music, movies/TV, and applications, especially when you tack on natural iTablet material, like books.
Guts and Glory.
The million-dollar question is what sort of hardware will serve as the guts of the iTablet. Intel’s Atom CPU, while very energy efficient, may still be too battery-draining for Apple. Not to mention the fact that the iPhone’s OS, which the tablet will likely use a variant of, is already well optimized for the ARM architecture. This, plus potential backward compatibility with iPhone/iPod Touch apps, is enough reason for Apple to choose a system-on-chip (SOC) that uses the ARM core and PowerVR-based graphics (all iPhones and iPod Touches employ Imagination Technologies’ PowerVR designs for 3D graphics acceleration). This could be a chip courtesy of Apple-acquired PA Semiconductor or something off the shelf.
The ARM Cortex-A9 multicore CPU seems like a good choice. It’s very similar to the CPU in the iPhone 3GS, only with more cores. Together with the inevitable larger battery, Apple could provide the true multitasking the iPhone lacks. Another great possibility is Nvidia’s Tegra SOC, which pairs an ARM 11 core similar to the one in the original iPhone with very impressive and power-efficient 3D graphics and HD video processing. We’d be disappointed if the iTablet didn’t have more RAM than the iPhone 3GS’s 256MB, but more than 512MB sounds too expensive. For storage, it would have to start at 32GB of flash and go up from there, with a 64GB option for $100 more.
So what does the total picture look like? Basically, a 9- or 10-inch iPhone with an interface and applications customized for a larger screen. Most of the same radio and other hardware features are there, and maybe even some added extras like a mini-HDMI jack and front-facing video camera. The CPU is similar to that of the iPhone 3GS, only more powerful, thanks in part to the larger battery. All this allows for true multitasking. Still, it’s distinctly not just a MacBook minus the keyboard. Whatever the hardware turns out to be, you can bet the real attraction will be new software features and services.
iTablet 1.0

Illustration: Adam Benton
In June 2008, we conceptualized this Mac tablet based on patents Apple filed between 2004 and 2008 ("Inside Apple R&D -- Apple Patents Realized"). We guessed we might see such a device in 2010. We don’t know if we got the look right, but we were pretty right on about the release date, if we do say so ourselves.