I am really having problems installing an Evga nVidia gtx680 Mac edition in a mac pro.
Here is the scenario:
We have 4 Mac Pros here. I have changed the graphics card in every one of the from the ATI Radeon 5870 to the evga nvidia gtx 680 mac edition.
3 of them work flawlessly without any problems. The last one stalls at the grey boot screen with the Apple logo.
All of the Mac Pros are mid 2010 5,1 dual cpu 2.66 GHz with 24 GB RAM running OSX 10.8.4
I have tried swapping cards around. The card works fine in another machine.
I have tried taking all other expansion cards and unnecessary hard drives out, to see if it could be an issue with the power supply.
I have formatted and clean installed the machine straight to OSX 10.8.4.
I have tried resetting the PRAM.
I have tried holding the power button on startup until the little light flashes.
It just hangs at the grey boot screen with the Apple logo. I can't boot into safe mode (It still just stalls at the boot screen).
If I put the original Radeon 5870 card back in the machine it boots fine.
I am completely out of ideas. Has anyone of you seen anything similar / have any ideas?
Thanks in advance,
Just for future reference or anyone else who might be having a similar issue.
This problem turned out to be related to the monitor.
We used a 30-inch Apple Cinema Display. When that is plugged in, the card doesn't work. When that is diconnected, and replaced with a Dell screen, the card works fine. The monitor works fine with the Radeon card, but not the GeForce.
It is probably a problem with that specific monitor since we have another suite running with the exact same config, just fine.