I'm thinking about building a hackintosh system around a Dell Optiplex 780, using the 750 TI card. At this point, it sounds like everything works in Yosemite-- is that correct? Or is the support in El Capitan good enough that I should just install that from the start? Thanks for the help
The 750 Ti is supported in both Yosemite and El Capitan. However, given the "newness" of El Capitan with it's USB problems, I'd normally recommend starting out with Yosemite, but since you can't get it from the Apple Mac App Store (MAS), you'll have to suffer through installing El Capitan and take advance of the maturing updates. But, don't update until nVidia publishes the appropriate Web Driver which is required for your GTX 750 Ti. BTW, what's the manufacturer & model of the GTX 750 Ti?
Additionally, since we're not telepathic, we need to know your system components. See the tonymacx86 Forum Rules & Policies on signature block components.
Additionally, please provide complete details
in your Profile.
Mobo: motherboard manufacturer/model
CPU: detailed CPU model (e.g., i7-4770K)
Graphics: Video card manufacturer/model and/or Intel Integrated Graphics version (e.g., HD4600)
See my Profile items to the left of my post, under my name.
By doing completing your Profile and signature block, you help us help you better.