I have a graphics card with two PCI-e power ports

[128keaton]

Does a mac pro have two power ports? I know I need an adaptor cable, but can I use two? Is there two ports on the logic board?

 

[Ironjer]

Yes the Mac Pro has two 6pin what is the graphics card model?

 

[128keaton]

Yes the Mac Pro has two 6pin what is the graphics card model?

Radeon 6970, older one lol.

 

[MacVidCards]

6970 is a handful, in most OSX versions it needs a hack to work

There is an EFI64 rom for it so it is possible to get boot screens on DVI port in a 3,1 or later, but the hack is more trouble than it's worth.