Ive installed my EVGA 460GTX as said in this guide:
tonymacx86 Blog: Updated NVIDIA Drivers for Mac OS X: Install Guide and iBoot-GE
dispite trying from both a fresh install and from a existing install nothing works. as in im still only able to run at the set 1240x798 which means that it has large black boarders around it for me which is very frustrating! anyone got any ideas on how to fix this as my screen is able to run at full 1080p and would love to be able to run at this!? please help!!