Does the HD 4870 X2 work with Mac Pro1,1?

[404Assassin]

Hi all,

Does anyone have the Sapphire Radeon HD 4870 X2 working with Mac Pro1,1?

I'm currently running 10.7.2 on a;
MacPro1,1
Dual-Core Intel Xeon 3 GHz

I have the 4870 x2 on my gaming PC which just fried it's power supply. I was planning on upgrading my Macs video card anyway and was wondering if the 4870 x2 can be flashed to work on the Mac?

Thanks in advance for any help!

 

[derbothaus]

If it works at all it will only use 1 of the GPU's as OS X does not support internal or external Crossfire. Kind of a bummer but that's how these things are bridged. 1x4870 isn't bad though
Not sure about EFI/ROM needing to be flashed or not. Someone wiser of these things can probably point the way.

 

[404Assassin]

I kind of suspected that just by the general lack of mention of the 4870x2....

What would you say is the best upgrade for a Mac Pro1,1? The 4870? Or is there a better card out there now that can be made to work with the Mac Pro1,1?

 

[flatfoot]

IIRC 5770, 5870, 6870. Many PC cards work without flashing, albeit not showing the Apple boot screen. Search the forums for compatible models.

 

[derbothaus]

6870 would be best bang for the buck and least hassle. 5870 is still overpriced and only slightly faster than the 6870. 69xx series has special problems.
https://forums.macrumors.com/threads/1317862/