Tiger Lake + Renoir On Ubuntu Linux For Battery vs. AC Performance
Running OCRMyPDF to perform optical character recognition on PDF documents did slow down by two seconds when on battery with Renoir, but with this test being multi-threaded the mid-range AMD laptop was still outperforming the high-end Intel EVO laptop by a wide margin.
With the Tesseract optical character recognition engine in pulling text off image files saw both laptops yielding slightly lower performance on battery.
Hugin is an open-source panorama photo stitching software package. The Ryzen 5 4500U did come out slightly slower on battery power but did beat the Core i7 1165G7 in performance from either power source.