Test Setup And System Specs
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.
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.
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|
|Model||Acer Iconia W510|
Samsung ATIV Tab
Display10.1" HD @ 1366x76810.1" HD @ 1366x76810.6" ClearType HD @ 1366x76810.1" HD LCD @ 1366x768CPUIntel 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)GPUPowerVR SGX545 (Single-core)Adreno 225ULP GeForce @ 520 MHzAdreno 225Memory2 GB LPDDR22 GB LPDDR22 GB2 GBStorage64 GB32 GB32 GB32 GBOperating SystemMicrosoft Windows 8Microsoft Windows RTMicrosoft Windows RTMicrosoft Windows RTMSRP$600$500$500$650Test SuiteInternet Explorer 10 ("Metro")GoogleWikipediaTom's HardwareYouTubeVideo ("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.