With OS X 10.8 Mountain Lion, Apple dropped 32-bit kernel support entirely. Most AMD Turion CPUs lacked native 64-bit kernel extensions. The community moved on to AMD FX and Ryzen, leaving Turion to retro-computing history.
Before attempting any installation, you must understand the enemy (or the unlikely ally) inside your machine. Mac Os For Amd Turion
Do you have access to a to create the installer? How much RAM is currently in the machine? With OS X 10
) use NVIDIA nForce or ATI Radeon Xpress chipsets, which often lack drivers (kexts) for newer macOS versions, leading to a lack of hardware acceleration. Blender Artists Community Recommended Versions With OS X 10.8 Mountain Lion