In this study, we systematically examine five PDMS models at both all-atom (AA) and united-atom (UA) resolutions, assessing their performance across a wide range of thermodynamic and transport properties. These force fields fall into two categories based on their development approach: (1) general-purpose universal force fields and (2) those specifically optimized for PDMS systems. Among the models evaluated, OPLS-AA, COMPASS and Dreiding represent the former category, while latter category includes models like the Huang's model and the UA force fields. Key features of these force-fields have been summarized in Table . The force-field parameters for each model are employed according to their original development. Notably, the original OPLS-AA model lacks parameters for Si-O interactions.