Battery Life

Always an important aspect to any thin and light laptop is battery life, and we’ve seen a trend over the last several years slightly reverse, as Ultrabooks started to pack in larger and larger batteries to increase battery life. 50 Wh batteries were pretty typical, but manufacturers managed to cram in more, with some devices offering 60 Wh or more. But more battery is more cost and more weight, so with more efficient displays, processors, and other components, manufacturers have been moving back down and it seems like around 50 Wh is again the average for this current generation. MSI fits in here with a 52 Wh capacity battery in their 14-inch laptop.

To measure battery life, we test all laptops at the same screen brightness of 200 nits, and then run them through three tests. Our most demanding test is our web one. We’ve recently added the PCMark 10 battery life test as well for Modern Office. This one also adds in a performance element though as it completes a fixed amount of work in a ten-minute interval. Any device that can complete the work quicker is able to idle for a higher percentage of the time. Finally, we have movie playback from the hard drive, which is the easiest test for any modern system.

Web Battery

Battery Life 2016 - Web

MSI delivers excellent battery life in our most demanding test. The device is not quite at the top, but over ten hours is a solid result in this quite demanding workload. Intel’s Evo platform makes a good first impression.

Battery Life 2016 - Web - Normalized

Looking at the normalized results, where battery size is removed from the equation, the efficiency is very solid especially considering the display size. It is not class leading, but it is still a good result.

PCMark 10 Modern Office

PCMark 10 Modern Office Battery

The PCMark 10 result at 200 nits is over 80 minutes longer than the web workload, and the runtime of over 700 minutes is the second highest we’ve seen since we added this test to the suite. Tiger Lake appears to be able to get its work done quickly and then drop down to a very efficient idle.

Movie Playback

Battery Life Movie Playback

Modern processors are able to offload video decode to fixed-function hardware in the GPU, and Intel’s media block has proven to be very efficient in the past, so it should not be a surprise to see that the new Intel Xe media block continues to deliver exceptional efficiency.

Battery Life Tesseract

Looking at the movie playback in terms of how many long movies can I watch on this laptop shows that the MSI Prestige should be able to easily get through almost any long flight or road trip without recharging needed. You can almost watch The Avengers seven times straight before the device powers off.

Charge Time

Part of the Intel Evo specifications is not just battery life and performance, but also charge time, with devices needing to be able to deliver four hours of runtime on just 30 minutes of charging. MSI includes a multi-voltage adapter which peaks at 65 watts delivery at 20 volts, which charges over the Type-C ports on the notebook. Let’s see how it fares.

Battery Charge Time

The total charge time is not very special, with the laptop needing about three hours to completely charge, but that includes the notebook sitting at 98% charge for an entire hour. It is not surprising to see the charge rate slow dramatically as the device gets close to being full, but an entire hour to finish the last two percent is a very long wait. Those that do need a quick top up though will find that the lower half of the battery does charge very quickly, with the laptop hitting 50% in just 34 minutes. Depending on your workload, that means the device definitely meets its Intel Evo ratings.

Display Analysis Wireless, Audio, Thermals, and Software
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  • Spunjji - Friday, December 18, 2020 - link

    I can accept this rationale on a device that has 2 or 3 USB 3 A ports along with the USB 2 port, but when it's the only USB A port on the device it's a poor showing. It's a bit premature to refer to any storage device not using USB-C as "legacy".
  • Deicidium369 - Thursday, December 17, 2020 - link

    Not like you would REALLY be a customer ...
  • tipoo - Thursday, December 17, 2020 - link

    Any impressions on how the Intel publicized Ryzen 10 second boost delay on battery impacts real world system responsiveness?
  • Smell This - Thursday, December 17, 2020 - link

    **The CPU runs at an all-core turbo of 4.3 GHz initially with a peak power draw of almost 52 Watts, and then settles down to a sustained 30-Watt draw for the duration with the CPU frequency...**
    _________________________________________________

    Would be nice if AT actually identified the X-axis title and time scale.

    INCREDIBLY DISAPPOINTED on how this has been presented.
  • Brett Howse - Thursday, December 17, 2020 - link

    In what has been a difficult year for everyone, I can see how this lapse in my judgement has hurt significantly. I apologize, and have updated the offending table.
  • lmcd - Friday, December 18, 2020 - link

    This travesty will likely shake the earth to its core. Next earthquake's on you bud ;)
  • Smell This - Friday, December 18, 2020 - link

    Thanks, Brett
    No worries, Mate
  • henkhilti - Thursday, December 17, 2020 - link

    Looks like 36W sustained to me, not 30W.
  • phoenix_rizzen - Thursday, December 17, 2020 - link

    So Intel's top-of-the-line Tiger Lake CPU trades blows with AMD's second-best, last-gen APU. Not sure if I should be impressed with how well AMD is doing these days, or depressed by how far Intel has fallen. It should be worrying to Intel's marketing team that a low-end brand like Acer Swift can compete so well with a top-end EVO-branded laptop. Wonder how they're going to spin that?

    It's nice to see actual competition in the laptop space, though. AMD 4000-series APUs, Intel Tiger Lake, AMD 5000-series APUS, Intel's next gen (forget the name). Will be an interesting 2021 for laptops. :)
  • yeeeeman - Thursday, December 17, 2020 - link

    Where is current gen AMD APU if 4700U is last gen?
    4700U is still current gen until we get 5000 series products which will happen in march next year.

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