TimelapseJunkie

On 26.8.2014 at 10:56 AM, DriveSlow said:

I upgraded my iMac 27" twice. First from the stock Radeon HD 5750 Mobility to the Radeon HD 6970m from the newer 2011 Model and a month ago to a Geforce GTX 780M. As expected i lost my initial boot screen with the upgrade to the Geforce GTX 780M because the card doesn't have UEFI Bios.

So, any card until the Geforce GTX 700 Series should work on an iMac which support MXM cards (2011 is the last model, graphics card in the 2012 and newer iMacs are soldered to the logic bord).

What's the situation after the latest OS updates? Do you still have no boot screen with the GTX 780M?