Early comparisons between SteamOS and Windows 11 on identical hardware show that SteamOS offers significantly better gaming performance, particularly in battery life. The Lenovo Legion Go S, when running SteamOS, provides over six hours of gameplay on 2D games like Dead Cells, while the Windows version only achieves 2.75 hours. Despite Windows 11's compatibility with various gaming platforms, it has faced criticism for performance issues and unnecessary features. Windows holds a dominant market share of about 70% in desktop operating systems, but the rise of SteamOS may challenge this position.