FUD Zilla reports tablets with Intel's Haswell Y-series SoC are anticipated to deliver a battery life of 8 to 10 hours. Devices based on this chip are expected in the fourth quarter of this year.
Let's not forget that Haswell 1- chip is much bigger than any ARM based top performers, but at the same time Haswell brings a lot more performance. Despite billions of transistors and 22nm SoC design tablets and Ultrabooks based on 1-chip Haswell or Haswell-ULT how some call it, you can expect 8- to 10-hour battery from products based on this Y processor line chips. This is a respectable score for PC like performance and having a scenario design power (SDP) typical expected TDP at 7.5W these products come close to the top ARM performers that have 5+W TDP.
Intel stresses that these chips won't simply land in tablets and Ultrabooks. It plans to use them in detachable, foldable and similar designs usually represented as the result of an unholy coupling between a notebook and a tablet.