Install GTX550 Ti in MacPro 1,1

[Fxguy]

I'm trying to install a GTX550 Ti card to replace my old GeForce 7300 GT. Anyone know if it is possible? Under System Profiler it lists the following information:

Display:

Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
Vendor: NVIDIA (0x10de)
Device ID: 0x1244
Revision ID: 0x00a1
Displays:
Display Connector:

So it looks like it recognizes that a card is in the slot, but not which card. Any help?

 

[Asgorath]

You should check the FAQ thread for more details. What OS are you running?

 

[Fxguy]

I'm running OS 10.6.8 at the moment.

I know I need to update, but Mountain Lion will not run, I tried to update via the app store and told me it is not compatible with this computer.

 

[MacVidCards]

Try Lion.

Will work with 10.7.5 and Nvidia drivers.

I can write an EFI for it but would require a Mac Pro 3,1 or later.

 

[Fxguy]

Thanks everyone for the replies. Its a work in progress.... I upgraded to Lion and the card now works. A few glitches when trying screen sharing and when I turned on overscan, but better quality over all.

Now my problem is that I had to use the two power ports from the optical drive bay to feed the new video card. How do I get more ports so I can put my optical drives back?

Thanks!

 

[Asgorath]

You'll want to update to the new 295.00.05f03 driver as well. There should be small power connectors on your motherboard, which use the low-profile 6-pin power cables that are specific to the Mac Pro. Details in the FAQ thread, including links on where you can buy the cables.