Tests show iPad 2 with 32nm A5 chip boasts better battery life

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It would appear that not all iPads are equal after all. According to a new report published on review site AnandTech, some of the lower-priced iPad 2 tablets, currently retailing for $399, actually come with a more advanced 32-nanometer version of the Apple A5 processor, as opposed to the older 45nm A5 chip that the iPad 2 launched with.

The new chip is manufactured using Samsung's 32nm high-k + metal gate LP transistors, resulting in a more power-efficient chip, says the report. Calling the variant the "iPad 2,4," the website conducted comprehensive tests that pitted it against the old iPad 2 and the new third-generation iPad. When performing H.264 720p video playback for example, the new iPad and iPad 2 clocked in at 11.15 hours and 13.3 hours respectively. The iPad 2,4 however, pulled off a staggering 15.7 hours of playback.

Overall, the iPad 2,4 offers superior battery life over the iPad 2 by as much as 16 percent. It should be noted that the iPad 2,4 didn't exhibit any discernible performance improvement over the iPad 2, though it did run slightly cooler.

The downside, though, is that the iPad 2,4 isn't easy to find. According to the report, the iPad 2,4 sample that was tested came from Best Buy, though "several attempts to find one elsewhere came up short. All indications seem to point to the iPad 2,4 being relatively rare, which makes sense considering what's inside it."

And just in case you're wondering, there are no markings on the external Apple packaging to indicate that it contains an iPad 2,4 tablet.

For more:
- check out this article at AppleInsider
- check out this article at AnandTech

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