Vanilla San Andreas could run on a toaster. A modded "DirectX 3.0" setup is a different beast entirely. Because the mods force the game to use modern shaders, your GPU will be utilized heavily.
A major drawback of the mod is its instability; users frequently report bugs, crashes, and heavy performance requirements compared to the official version. gta sa sa directx 3.0
San Andreas is timeless, but its graphics API isn’t. Embrace DirectX 9.0c, or go all the way with RenderWare patches – just leave DirectX 3.0 back in 1996 where it belongs. Vanilla San Andreas could run on a toaster