A few years ago Steve Jobs made a bit of a deal about the fact that the chips of the day had terrible power/watt performance. Chips then and now needed alot of power to do their calculations, they ran hot and they were inefficient, in mobile devices this combination is a battery killer. Apple wanted better and bought PA Semiconductor back in 2008 to do better.
“PA Semi is going to do system-on-chips for iPhones and iPods,” Steve Jobs
With the release of the A4 we have seen come to light Apples first home brewed System on a Chip ( SOC ). Running at 1Ghz it’s one of the fastest in the industry and being able to watch Video for 10 hours straight attests to Apple’s claims about it’s power efficiency.
Is it confirmed that is can watch video for 10 hours straight? In the presentation, Jobs said they’ve been able to get 10 hours of battery life out of the system, but didn’t say that was under specific conditions like watching video. I would assume that it means a best-case scenario, such as browsing the web, or sitting idle, otherwise wouldn’t they more likely publicize the (presumably longer) battery life from doing something less intensive?
It not independently confirmed, which is why we’ll have to wait and see for some independent no marketing numbers.. But your incorrect in your assertion about what Jobs said. The video from the presentation does have Jobs saying you can watch video for 10 hours straight. Specifically he quotes being able to board a flight to Tokyo and being able to watch video the entire way. Such a flight is around 9+ hours. So we do in fact have an assertion about what condition the battery life is measured under.,