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

    It's a fair point. The 4000 series isn't last-gen until the newer devices are out. It still competes pretty well, though.
  • lucasdclopes - Thursday, December 17, 2020 - link

    AMD's CPUs beating Intel's CPU.
    Intel's IGP beating AMD's IGP
    What a time to be alive...
  • Speedfriend - Thursday, December 17, 2020 - link

    And Apples CPU and GPU smashing both. On its first attempt...
  • zodiacfml - Thursday, December 17, 2020 - link

    Not really, AMD's high end mobile APUs can compete or beat the M1 on heavy workloads. to be fair, m1 is Apple's entry level design
  • KPOM - Thursday, December 17, 2020 - link

    The point is that the M1 draws so little power, Apple removed the fan from the MacBook Air and still tripled its multi-core performance.
  • senttoschool - Thursday, December 17, 2020 - link

    M1 smashes AMD in any workload that is not Cinbench R23 Multithread. There.

    Otherwise, the M1 is superior is just about every way including power, temperature, battery life, no throttling on battery, GPU, encoding and decoding, SSD speeds, and of course, single thread.
  • whatthe123 - Thursday, December 17, 2020 - link

    that's already been tested and proven untrue. it is far superior in efficiency, but loses when more than 4 cores/8 threads are utilized and when memory systems are comparable. either its artificially capped to keep power down or the design's efficiency curve falls off at higher frequencies because it absolutely does not outperform x86 8C/16T parts. it's also on a cutting edge node competing with 7nm/10nm parts yet its basically the same single thread performance as zen 3, so not exactly blowing anyone away with just raw architecture.
  • lemurbutton - Friday, December 18, 2020 - link

    It is true. The M1 is faster than the 4900HS in multithread Geekbench which tests a variety of workloads and it's significantly faster in single core. And unlike AMD processors, it does not throttle when it's on battery and it has 2x more battery life in general.

    So no. AMD's very best mobile processors can't touch the M1.
  • Kuhar - Friday, December 18, 2020 - link

    Don`t bother with delusional apple fanboys.
  • Sailor23M - Friday, December 18, 2020 - link

    @senttoschool Well put, TY.

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