Mac Pro 4.1 Early 2009

[linkin-ns]

hi guys,

I just bought a 2nd Mac Pro 2009 with Xeon 2.66, 8GB RAM and I use my XFX 6870 from PC because it the machine does not come with any graphic card.

I connect it with 2 monitor, one is Dell U2711 and Shimian 27" with both 2560x1440.

However sometimes my Dell screen with just went black for a second and back on again, I just not sure what wrong with that. There is no problem with the other monitor.

Just wondering that the graphic card could not drive 2 monitors because it not really compatible with Mac or what reason?

should I find a 2nd 5870 ?

Thanks

 

[DanielCoffey]

Can you confirm which Mac Pro model you are using as your post title doesn't match what you are talking about. You will see the information you need on the About My Mac - More Info page.

 

[linkin-ns]

Hi, it is a Mac Pro early 2009, sorry for typing mistake

 

[MacUser2525]

... I use my XFX 6870 from PC because it the machine does not come with any graphic card.
...
However sometimes my Dell screen with just went black for a second and back on again, I just not sure what wrong with that. There is no problem with the other monitor.

I got that on my 2408 when I used a display port to DVI adapter then I finally broke down and bought a display port cable and have not had a problem since. If you are using similar try that.

 

[linkin-ns]

is there such a different about performance between a flashed 6870 and non-flashed 6870??

or just only about the information show on System profile and Boot Screen

 

[MacUser2525]

is there such a different about performance between a flashed 6870 and non-flashed 6870??

or just only about the information show on System profile and Boot Screen

Link speed is slower on a PC card but that has nothing to do with flashing rather a resistor that needs to be changed/added to get full link speed.

 

[OrangeSVTguy]

Is the Dell hooked up through an adapter? Or plugged directly into the graphics card?