The primary reason for the separation of files lies in the fundamental difference between 32-bit and 64-bit architecture.
: Installs specific DLLs required by older games, such as d3dx9_43.dll , XInput1_3.dll , and XAudio2_7.dll . directx 90c extra files x86 x64
The extra files required for DirectX 9.0c on x86 and x64 architectures include: The primary reason for the separation of files