Mac Pro PC Graphics card question (Project Cars + Windows)

S

smuudge

macrumors newbie
Hello everyone.
I have recently retired my 8 core Mac Pro from graphics duty and it now is being used in the gaming den to run Project Cars!
I have Windows 8.1 running smoothly and also 2 Mac cinema displays running off of a flashed AMD Radeon 6800 HD 1GB video card. Project Cars runs smooth but i am looking for a triple display set up to complete the effect!

My question is, can anyone recommend a good cheap/card that will slot in to the PCI slot on the MP and give me a good frame rate for game play?

I don't really want to fork out for another 1Gb Mac card if i have too and this will only be used under Windows OS so guess that opens the doors for a cheaper Windows PCI card?

Thanks in advance.
 
Your HD 6870 (or 6850?) should be able to drive three displays just fine. Or is the performance insufficient when attaching a 3rd one?
 
Ah that's very strange, i did actually try that but i couldn't get a signal out of the 3rd monitor. I just assumed the card was only capable of displaying 2 signals at a time.

It appears i need to be more specific with the type of connectors i use and in what combination to get the 3 ports/monitors to work according to varying google search results. For instance (mini-dp + hdmi/vga + dvi)

Can anyone clarify?
 
AMD cards can only drive two legacy displays (DVI / HDMI / passive DP), each additional display needs to be connected through a true DisplayPort connection (=> native DP device or active DP adapter).
 
Thanks. Is the 'Apple MDP to DVI adaptor' classed as an 'active DP adaptor' or am i looking for something different?
 
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