To repeat: It is not broken. You do not need to buy a new GPU. The error message is a linguistic fossil from a time when a 64MB VRAM card was considered a supercomputer.
Conclusion
: Ensure that the game is installed on the same storage drive as your game launcher (e.g., the Rockstar Games Launcher). gta 3 cannot convert textures your video card hot
If SilentPatch doesn't work (or you want a different solution), the next best fix is . This is a translation layer that tricks old games into thinking they are talking to an old 3Dfx Voodoo or DirectX 7 card, while actually translating those commands to DirectX 11 or 12. To repeat: It is not broken