When using Futuremark's
Peacekeeper test, which measures browser performance, the iPhone 6 Plus running Safari scored 2,592.
In the more demanding
Peacekeeper test, which mixes in video, graphics processing, and more intensive computational activities to the typical web browsing load, the Spin 7 only managed four hours and 20 minutes before it shut down.
Our Peacekeeper test, where we run a browser benchmark until the battery gives out, gave us two hours and 33 minutes of battery life.
In our tests, the Surface Pro scored a solid five hours and 21 minutes in our most processor - intensive
Peacekeeper test, which isn't the longest we've seen, but is quite solid for a detachable tablet with a fast Core i7 - 7660U processor.
It scored four hours and 48 minutes on our most grueling
Peacekeeper test, for example, which is low compared to some of our comparison systems but not egregiously so.
Our Peacekeeper test, where we run a series of browser - based benchmarks until the battery dies, gave us three hours and four minutes of life.
The Surface Pro 4 only ran
the Peacekeeper test for about six and a half hours before calling it quits, although it's powering a much larger display and a desktop OS.
The Acer Predator 15 fared a little better, but not by much, maintaining a charge for just over three hours during
the Peacekeeper test.
The Peacekeeper test, where we cycle browser - based benchmarks until the battery dies, gave us three hours and 21 minutes of battery life.
Using our most demanding
Peacekeeper test, the battery lasted six hours and 18 minutes.
Not exact matches
On top of that, the 8.9 bested the 7 - incher on our webpage load
tests, doing about 10 percent better on Futuremark's
Peacekeeper HTML5
test and about double that on the SunSpider
test (there, the 8.9's score nearly matched that of the Apple iPad mini).
The Nook HD +'s browser scored 655 on the
Peacekeeper browser
test, which is a bit better than the 586 we got on the Nook HD or the 196 we scored on the Nexus 7.
On the
Peacekeeper browser
test, the Nook HD scored a solid 586 to the Nexus 7's score of 196.
In a web performance
test using
Peacekeeper (and the Modern IE11 browser) the two devices are evenly matched.
A charge lasted thirteen hours and eleven minutes in our light - load reading
test, while the
Peacekeeper Web - browsing benchmark needed six hours and forty - three minutes to consume the battery.
We measured the Chromebook 2's battery life at 6 hours and 22 minutes on our
Peacekeeper battery
test.
We found the battery capable of almost six hours when running our light - load reader's
test, a figure that dwindles to 3 hours and 47 minutes during the
Peacekeeper Web browsing benchmark.
That bulky battery paid off in
Peacekeeper endurance
tests, as we recorded four hours and 20 minutes of endurance.
These results are not bad for a convertible with a 3rd - gen processor, but they're put to shame by updated 4th - gen laptops, many of which can last over ten hours in our light - load
test and over five in
Peacekeeper.
The
Peacekeeper browser
test loop ran for four hours and 32 minutes before calling it quits.
On the
Peacekeeper browser
test, which is typically the most demanding battery
test we run, the Acer Aspire VX 15 managed a little over four hours, easily pulling ahead of the Acer Predator 15 and Asus ROG Strix.
The
Peacekeeper web browsing benchmark needed six hour and six minutes to drain a full charge and endurance was extended to nine hours and thirty - eight minutes in our light - load Reader's
Test.
In that
test the Alienware managed four hours and 27 minutes, a major improvement over its
Peacekeeper result.
Battery life is sometimes sacrificed by absurdly thin laptops, but this Sony, equipped with a 4th - gen Haswell processor, managed to hang with the best by scoring four hours and 34 minutes in the
Peacekeeper browsing
test and a stunning 10 hours 32 minutes in the low - load Reader's T
test and a stunning 10 hours 32 minutes in the low - load Reader's
TestTest.
Our light - load Reader's
Test reported 7 hours and 16 minutes of endurance, while the
Peacekeeper Web browsing benchmark drained a full charge in just over 5 hours.
In our
Peacekeeper Web browsing
test the Dell XPS 13 lasted seven hours and 52 minutes.
It lasted 8 hours and 13 minutes in our light - load Reader's
Test, and 3 hours, 35 minutes on the more - demanding Peacekeeper Web browser rundown t
Test, and 3 hours, 35 minutes on the more - demanding
Peacekeeper Web browser rundown
testtest.
The
Peacekeeper browser
test drained the battery in a little under four hours, but our video loop and web browsing macro
tests remained between four and five hours each.
The
Peacekeeper Web browsing benchmark required almost four hours to drain a full charge, and our light - load reading
test extended endurance to five hours and 27 minutes.
Our Battery Eater load
test killed the tablet in just less than two hours, and the
Peacekeeper browser benchmark ate through a full charge in four hours and 29 minutes.
In our
Peacekeeper battery
test, the Razer Blade Pro managed to survive for about two hours and 38 minutes before falling flat.
Even the light - load Reader's
Test munched through a charge in three hours and eleven minutes, a time reduced to three hours and three minutes by the
Peacekeeper Web browsing benchmark.
The
Peacekeeper web browsing benchmark needed five hours and thirty - nine minutes to drain a full charge, and our light - load reading
test extended that figure to nine hours and thirty - four minutes.
In the
Peacekeeper Web - based battery life
test, it lasted just 3 hours and 17 minutes.
The
Peacekeeper battery
test, which runs browser benchmarks in a loop, lasted six hours and 15 minutes, which is a perfectly respectable result.
On a deeper level, the ZBook Studio G4 outlasted the Dell Precision 5520, the latest Surface Pro 2 - in - 1 (2017), and the latest Dell 15 XPS unit (2017) in the
Peacekeeper battery
test, while all four fell behind the Lenovo ThinkPad X1 Carbon.
When we calibrated the display to 100 lux it only managed to average five hours, 41 minutes in the
Peacekeeper web browsing battery
test.
In the less - demanding
Peacekeeper battery
test, the tablet lasted 6 hours and 16 minutes, slightly better than HP's Spectre 13 x2 managed with its two batteries (6 hours, 4 minutes).