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