This study aims to evaluate and compare the technical performance of the Linux Mint 21.3 operating system with Windows 11 in the context of desktop use at PT Tatalogam Lestari. The research method used is a quantitative approach with a comparative experimental design. Measured parameters include CPU usage, RAM, boot time, and software compatibility. Results show Linux Mint is more efficient in resource use and boot speed, while Windows 11 excels in business software compatibility. In-depth interviews revealed that Linux Mint is well accepted by users although it requires an adaptation period. In conclusion, Linux Mint can be an efficient solution for specific divisions that do not depend on Windows-only software, provided that training and technical assistance are available.