Since ChessBase 10 is an older program, it is often favored by users with older hardware or those wanting a lightweight "portable" setup.
If you are looking for a legitimate "portable" way to use ChessBase today, the company now offers the ChessBase Mobile App for Android and iOS. Premium monthly SUBSCRIPTION - ChessBase Shop chessbase 10 portable
ChessBase 10 Portable: Your Essential Chess Database Anywhere Since ChessBase 10 is an older program, it
Although PGN is highly portable, it is less efficient for massive datasets compared to native ChessBase formats. Storing the same game data in PGN typically requires about seven times more storage space than the ChessBase binary format. PGN (Portable) CBH (ChessBase Native) Readability Human-readable text Binary data Space Efficiency Low (7x larger) Portability Universal across apps Restricted to ChessBase/compatible GUIs step-by-step guide Storing the same game data in PGN typically