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Test Setup And System Specs

Update: Intel Expands Our Battery Testing At CES 2013
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Going hands-on with deconstructed tablets in the dry desert air of Las Vegas necessitated wrist straps and expensive ESD-preventing coats. That's equipment we haven’t used in our lab in many years due to the moisture-rich southern California climate.

Editor-in-chief Chris Angelini in Intel's suite at the VenetianEditor-in-chief Chris Angelini in Intel's suite at the Venetian

We used Intel's test setup to run a number of workloads that we brought with us, logging the power consumption of each platform over time. As in our earlier testing, we used the Atom-equipped Acer Iconia W510 alongside Microsoft’s Tegra 3-powered Surface. This time, we also added the Snapdragon S4-based Samsung ATIV Tab and Dell XPS 10, both of which are rocking Krait CPU cores.

Becasue you can never have enough screens.Becasue you can never have enough screens.

With all four tablets instrumented, we began by testing the effects of Web browsing on battery life by visiting three pages on three different sites to get an idea of the battery power required by each. First we loaded Google’s homepage, then a page on Wikipedia, and finally the Tom’s Hardware homepage. Next, we moved on to video playback testing with the same very transcode of Iron Man used to test battery life in our regular tablet reviews. Finally, we combined Web browsing and video playback by firing up YouTube to watch a little Gangnam Style.

Test System Specs
ModelAcer Iconia W510

Dell XPS

Microsoft Surface

Samsung ATIV Tab

Display
10.1" HD @ 1366x768
10.1" HD @ 1366x768
10.6" ClearType HD @ 1366x768
10.1" HD LCD @ 1366x768
CPU
Intel Atom Z2760 @ 1.8 GHz (Dual-core)
Qualcomm Snapdragon S4 APQ8060A @ 1.5 GHz (Dual-core)
Nvidia Tegra 3 T30 @ 1.3 GHz (Quad-core)
Qualcomm Snapdragon S4 APQ8060A @ 1.5 GHZ (Dual-core)
GPU
PowerVR SGX545 (Single-core)
Adreno 225ULP GeForce @ 520 MHz
Adreno 225
Memory
2 GB LPDDR2
2 GB LPDDR2
2 GB
2 GB
Storage
64 GB
32 GB
32 GB
32 GB
Operating System
Microsoft Windows 8
Microsoft Windows RT
Microsoft Windows RT
Microsoft Windows RT
MSRP
$600
$500
$500
$650
Test Suite
Internet Explorer 10 ("Metro")
Google
Wikipedia
Tom's Hardware
YouTube
Video ("Metro")
Iron Man


The extremely close time intervals reported in these tests allowed us to create graphs depicting power usage over time based on thousands of data points. 

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