Mac users with NVIDIA video cards are recommended to stick with macOS 10.13 as upgrading to the latest version of Apple's operating system comes with a nasty surprise. Apple isn't allowing NVIDIA to put out drivers for macOS 10.14 and this is crippling NVIDIA GPU support on the Mac. Apple seems to be the culprit here, as NVIDIA says it's ready and willing to support Mojave.
Tech writer Marco Chiappetta claims Apple is no longer providing NVIDIA with pre-release operating systems and the low-level framework necessary to make drivers for upcoming OS releases. Basically, Apple is unwilling to enable support for NVIDIA cards on Mojave. The exact reason for this is unknown.
Apple controls which drivers are released for its operating systems. And when Apple pushed macOS 10.14 out the door, it appears suspended support for some discrete NVIDIA GPUs. According to Apple’s website, only two aging “Mac Edition” discrete NVIDIA GPUs, the Quadro K5000 and GeForce GTX 680, are officially supported. Pre-Mojave though, many users had turned to newer, more powerful NVIDIA discrete GPUs based on the company’s Pascal architecture for workloads that can benefit from NVIDIA’s CUDA parallel computing platform and other proprietary development tools. It is worth noting that NVIDIA also recently released GPUs based on its future-looking turing architecture that offers additional compute resources, i.e. RT and Tensor cores, along with improved multimedia capabilities and enhanced HDR support, which are all features that will be of particular interest to some users moving forward.