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CrXPRT is more valuable than ever

Justin Greene
By Justin Greene
on March 28, 2019

Digital Trends recently published an article discussing various rumors about the future of the Google Pixelbook line. Pixelbooks were some of the first Chromebooks with high-end hardware specs, and they were priced accordingly. Whether or not the rumors discussed in the article turn out to be true, the author points out that the Pixelbook prompted several other vendors, such as HP and Lenovo, to take a chance on high-end Chromebooks. It seems like high-end Chromebooks are here to stay, but given the unique constraints of the Chrome OS environment, buyers are often unsure if it’s worth it to shell out the extra money for a premium model.

We developed CrXPRT to help buyers answer these questions. CrXPRT is a benchmark tool that measures the battery life of your Chromebook as well as how fast it handles everyday tasks like playing video games, watching movies, editing pictures, and doing homework. The performance test gives you individual workload scores and an overall score based on the speed of the device. The battery life test produces an estimated battery life time, a separate performance score, and a frames-per-second (FPS) rate for a built-in HTML5 gaming component.

You don’t have to be a tech journalist or even a techie to use CrXPRT. To learn more, check out the links below.

Testing the performance or battery life of your Chromebook

Simply download CrXPRT from the Chrome Web Store. Installation is quick and easy, and the CrXPRT 2015 user manual provides step-by-step instructions. A typical performance test takes about 15 minutes, and a battery life test will take 3.5 hours once the system is charged and configured for testing. If you’d like to see how your score compares to other Chromebooks, visit the CrXPRT results page.

Want to know more?

Read the Exploring CrXPRT 2015 white paper, where we discuss the concepts behind CrXPRT, its development process, and the app’s structure. We also describe the component tests and explain the statistical processes used to calculate expected battery life.

BenchmarkXPRT Development Community members also have access to the CrXPRT source code, so if you’re interested, join today! There’s no obligation and membership is free for members of any company or organization with an interest in benchmarks.

Give CrXPRT a try and let us know what you think!

Justin

Posted in Battery life, Benchmarking, BenchmarkXPRT, BenchmarkXPRT development community, Chrome OS, Chromebooks, Google, Google Chrome, What makes a good benchmark? | Also tagged , , , , , ,

A new BatteryXPRT 2014 for Android build is available

Justin Greene
By Justin Greene
on October 26, 2018

In last week’s blog, we discussed why we now consider full BatteryXPRT rundown tests to be the most accurate and why we’re releasing a new build (v110) that increases the default BatteryXPRT test from 5.25 hours (seven iterations) to 45 hours (60 iterations). We also built v110 using Android Studio SDK 27, in order to bring BatteryXPRT up to date with current Android standards. Today, we’ve posted the new build on BatteryXPRT.com and in the Google Play Store, and we’ve also published an updated user manual. Please contact us if you have any questions about BatteryXPRT testing.

Justin

Posted in Android, Battery life, BatteryXPRT 2014 for Android, Benchmarking, BenchmarkXPRT | Also tagged , , , , ,

The new WebXPRT 3 Processor Comparison Chart

Justin Greene
By Justin Greene
on October 25, 2018

Last fall, we published the WebXPRT 2015 Processor Comparison Chart, a tool that makes it easier to access hundreds of PT-curated, real-world performance scores from a wide range of devices including everything from TVs to phones to tablets to PCs. Today, we’re happy to announce that we’ve added a WebXPRT 3 Processor Comparison Chart.

The WebXPRT 3 chart follows the same format as the WebXPRT 2015 chart, letting you click the average score of each processor to view all the WebXPRT 3 results we currently have for that processor. You can change the number of results the chart displays on each page, and as the screenshot below shows, a new drop-down menu lets you toggle back and forth between the WebXPRT 3 and WebXPRT 2015 charts. W plan to add additional capabilities on a regular basis, so if you have ideas for features and types of data you’d like to see, let us know!

If you’d like to submit results for us to consider for publication in the chart, follow the detailed instructions here. The submission process is quick and easy. We look forward to seeing your results!

WebXPRT 3 Proc Chart

Justin

Posted in Android, Battery life, BatteryXPRT 2014 for Android, Browser-based benchmarks, Performance benchmarking, WebXPRT, WebXPRT 3, WebXPRT Processor Comparison Chart | Also tagged , , , , ,

A BatteryXPRT bug fix is on the way

Justin Greene
By Justin Greene
on October 18, 2018

Some time ago, we started to see unusual BatteryXPRT battery life estimates and high variance on some devices when running tests at the default length of 5.25 hours (seven 45-minute iterations). We suspected that the problem resulted from changes in how new OS versions report battery life on certain devices (e.g., charging past a reported level of 100 percent). In addition, the progress of battery technology in general means that the average phone battery lasts much longer than it did a few years ago. Together, these factors sometimes led to BatteryXPRT runs where the OS reported little to no battery decrease during the first few iterations of a test. We concluded that 5.25 hours wasn’t long enough to produce an accurate battery life estimate.

After extensive experimentation and testing, we’ve decided to release a new build that increases the default BatteryXPRT test length from 5.25 hours (seven iterations) to 45 hours (60 iterations) to allow enough time for a full rundown on most phones. Based on our testing, we consider full rundown tests to be the most accurate and will use those exclusively in our Spotlight testing and elsewhere. Testers will still have the option of choosing shorter test durations, but BatteryXPRT will flag the results with a qualifier that recommends performing a full rundown.

We plan to release the updated build by the end of next week and update BatteryXPRT documentation to reflect the changes. We have not changed any of the workloads and both performance results and full-rundown battery life estimates will be comparable to results from earlier builds.

BatteryXPRT continues to be a useful tool for gauging the performance and expected battery life of Android devices while simulating real-world tasks. If you have any questions about BatteryXPRT, please feel free to ask!

Justin

Posted in Android, Battery life, BatteryXPRT 2014 for Android, Benchmarking, BenchmarkXPRT, Mobile devices, Performance benchmarking | Also tagged , , ,

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