So, what's new about the iPad Air, aside from the name? The major change concerns the design. The full-sized, 9.7in iPad is now a dead ringer for its little brother, the iPad mini. It has the same chamfered metal edges around the glass front; those edges are more aggressively rounded than on the iPad 4; and discrete volume buttons have replaced the rocker switch of old. In our view it's a marginally more attractive device, especially in the moody Space Grey livery ( it also comes in silver) , but there's not much in it. The headline is the reduced weight and size of the iPad Air.
At 469g, the Wi-Fi iPad Air is a significant 28% lighter than the equivalent iPad 4, and it's thinner and narrower across its waist. Hold each in succession and you notice the difference immediately. In realising the new design, Apple has reduced the capacity of the battery by 23% : it drops from a huge 43Wh to 33Wh. Yet remarkably, this hasn't had a negative impact on longevity. In our looping video test, with the screen calibrated to a brightness of 120cd/m2 and flight mode activated, the Air lasted 12hrs 55mins – 43 minutes longer than its predecessor.
Clearly, the Air is a much more efficient tablet. According to Apple this is due in part to the low-power M7 processor, which takes over the role of handling data from the tablet's various motion sensors ( the accelerometer, the gyroscope and the compass) .
A pleasant side effect of having a smaller battery is that the iPad takes less time to charge. Using the supplied AC adapter, the Air charged from 0% to 100% in around four hours. In the same time span, the iPad 4 hit only 80% . This may be a result of the more potent charger, too: the adapter bundled with the Air delivers DC current at 2.4A, compared to the 2A of the previous effort.
Performance, too, has seen a significant boost, with the same dual-core, 64-bit, 1.4GHz A7 CPU as the iPhone 5s on board. In every benchmark we ran, this helped the iPad Air stretch out a significant lead on the iPad 4, which is no slouch. It's also faster than every Android tablet we've tested recently ( you can find comparative results in the table below) .
In real-world terms, that means swift load times for apps, slick menu and web-page scrolling and sumptuous graphics in games. In Asphalt 8: Airborne, one of the most demanding games around, there's a slightly smoother frame rate than on the iPad 4, and the particle effects and high-resolution textures are stunning. The component that hasn't seen any change is the display, which is an IPS unit with a resolution of 1, 536 x 2, 048 and a pixel density of 264ppi. We measured the maximum brightness at 410cd/m2 and the contrast ratio at 1, 000: 1. Eyeballing it next to the previous model, it looks identical, with rich colours and an ever-so-slightly c
