GeForce 7300 GT and Tesla M2090 on Mac Pro1 (2006)

[b]Hi there,
I have Mac Pro 1 (2006) and it has NVIDIA GeForce 7300 GT, I added Tesla M2090 to use it for CUDA programming, but the problem is if I install CUDA 7.5, Tesla will work, but without desktop display (only bash) because the Geforce will not work. If I install NVidia Driver for the GeForce (v. 304.131) then I have the desktop display, but Tesla will not work.

can any one suggest me a solution?[/b]