A method for performing graphics processing of a graphics system in an electronic device and an associated apparatus are provided, where the method includes the steps of: configuring a configurable hardware of the graphics system to be a vertex processing (VP) path in a specific processing phase; utilizing the VP path to perform VP-related tile-based rendering (TBR) operations; configuring the configurable hardware of the graphics system to be a pixel processing (PP) path in another processing phase; and utilizing the PP path to perform PP-related TBR operations. For example, after performing VP-related TBR operations of a specific frame of a plurality of frames is completed, PP-related TBR operations of the specific frame are performed, where after performing the PP-related TBR operations of the specific frame is completed, VP-related TBR operations of another frame of the plurality of frames are performed.