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AMD Ryzen 7 4800U-powered laptops may potentially offer stellar battery life compared to similar Intel offerings

Laptops powered by AMD Ryzen 4000-U series processors may have stellar battery life. (Image Source: Forbes)
Laptops powered by AMD Ryzen 4000-U series processors may have stellar battery life. (Image Source: Forbes)
A PCMark 10 battery life test result of an AMD Ryzen 7 4800U-powered laptop has leaked online. Although specific details about the laptop itself are not available, the test seems to indicate a runtime of 13 hours 52 minutes on a 70 Wh battery. This is a very good runtime and probably higher than most Intel-powered counterparts. The result is also not too far away from what a typical Snapdragon 8cx-powered WoA laptop would score.

It is not often that we get to see battery life tests in leaked benchmarks but recently, a PCMark 10 battery life result of an AMD Ryzen 7 4800U-powered laptop seems to indicate that the new AMD Renoir chips can offer significantly longer battery life compared to similar Intel offerings with a Core i5 U-series and above. 

The Ryzen 7 4800U is a 7nm 8C/16T 15W part with a base clock of 1.8 GHz and a maximum boost up to 4.2 GHz. We see that the clock speeds and thread counts are correctly identified in the AMD System Monitor app. For those not in the know, AMD System Monitor provides an easy way to keep a tab on APU performance and monitor how workloads are balanced between the CPU and the Vega 8 iGPU. 

The PCMark 10 battery life test seems to be running the "Modern Office' benchmark and in this test, the Ryzen 7 4800U laptop seems to have amassed a total runtime of 13 hours 52 minutes (832 minutes) on what is purported to be a 70 Wh battery. This is an impressive runtime compared to Intel Whiskey Lake-powered laptops shown in the comparison image below. In fact, the nearly 14-hour runtime is really good in comparison with the 16 to 17-hour battery life of the Project Limitless Snapdragon 8cx notebook we've seen last May. 

Having said that, battery life is a highly variable metric and there's not much information available from this particular leak pertaining to the notebook itself such as the brightness level, background apps/connections, and the power plan it is using. However, we can surely make an informed guess about the possibility of significantly longer idle times that are not often seen in conventional x86 laptops. 

AMD Ryzen 7 4800U system monitor. (Image Source: HXL on Twitter)
AMD Ryzen 7 4800U system monitor. (Image Source: HXL on Twitter)
PCMark 10 Modern Office Battery Life test. (Image Source: HXL on Twitter)
PCMark 10 Modern Office Battery Life test. (Image Source: HXL on Twitter)
Battery information - Likely a 70 Wh battery. (Image Source: HXL on Twitter)
Battery information - Likely a 70 Wh battery. (Image Source: HXL on Twitter)
PCMark 10 battery life runtimes for a few Intel-based notebooks. (Image Source: @Cat_Merc on Twitter)
PCMark 10 battery life runtimes for a few Intel-based notebooks. (Image Source: @Cat_Merc on Twitter)

Source(s)

Weibo (Chinese) via HXL on Twitter

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2020 03 > AMD Ryzen 7 4800U-powered laptops may potentially offer stellar battery life compared to similar Intel offerings
Vaidyanathan Subramaniam, 2020-03- 6 (Update: 2020-03- 6)
Vaidyanathan Subramaniam
I am a cell and molecular biologist and computers have been an integral part of my life ever since I laid my hands on my first PC which was based on an Intel Celeron 266 MHz processor, 16 MB RAM and a modest 2 GB hard disk. Since then, I’ve seen my passion for technology evolve with the times. From traditional floppy based storage and running DOS commands for every other task, to the connected cloud and shared social experiences we take for granted today, I consider myself fortunate to have witnessed a sea change in the technology landscape. I honestly feel that the best is yet to come, when things like AI and cloud computing mature further. When I am not out finding the next big cure for cancer, I read and write about a lot of technology related stuff or go about ripping and re-assembling PCs and laptops.