(FIXED!!) AMD RADEON HD 7850 GRAPHICS CARD (3 MONITOR SUPPORT MAVERICK 10.9.1)
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Hi I have an Amd Phenom ii x4 black edition processor.

 

ASUS M4A87TD/USB3 Motherboard.

(update) UPDATED TO:

ASUS M5A99FX PRO R2.0

 

Radeon HD7850   2Gb   graphics card.

(update) AND ADDED:

XFX HD5450

(ONLY HAD THE 7850 INSTALLED ON OLD MOTHERBOARD, NOW BOTH ARE INSTALLED)

 

 

I currently have 2 monitors working but as soon as I hook the 3rd one up to the computer Mavericks freezes. One I remove the third monitor everything works. 

 

2 monitors are using DVI and the other monitor is using display port to VGA. 

 

I'm thinking of changing the single monitor to Display port to DVI. 

 

Is there something that needs to be done to make Maverick work with 3 monitors at once? 

 

If  bought a new Motherboard and had my HD7850 and HD5850 installed could I run both cards at once? Out putting display from both at the same time. 

 

Not sure which way to go with this. 

 

I know my HD7850 can run 4 displays on Windows 8.1

 

Only thing holding my be with Maverick is getting my third monitor working. 

 

Any help would be greatly appreciated. 

 

 

UPDATE!!!!!!!!!!!

 

HAVE 3 MONITORS UP AND RUNNING GREAT AND WILL BE TESTING 4 MONITORS SOON ON MAVERICKS 10.9.1

 

2 MONITORS HOOKED UP TO THE HD7850 THROUGH DVI AND HDMI

 

1 MONITOR HOOKED  UP TO THE XFX HD5450 THROUGH DVI

 

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What did you have to do to get the audio to work? I have the same exact motherboard currently im having trouble finding programs and kexts to get audio to work. 

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Hello

I Have a very similar setup. I had the card working but there seemed to be no acceleration. I saw in the forum that possibly changing some number in the actual kext so i downloaded the modified kext. I checked to make sure the number was changed 
with text edit. then used kext utility to install the kexts. I rebooted and the login screen is black. To reiterate i can boot but the login screen is black. I have tried 3 different boot loaders and some boot flags and nothing on any of the DVI or HDMI ports just boots to black screen. If you could be so kind and upload what you have as working so i can remedy this issue. Any Help would be greatly appreciated.  
 
 
MOTHERBOARD- ASUS M5A99X EVO R2.0 
CPU- AMD FX 8350 UNLOCKED BLACK EDITION 
CPU FAN/COOLER- COOL MASTER GEMIN II 
GRAPHICS CARD- XFX RADEON R 7850 HD 1GB DDR5, 
MEMORY- 16GIG PATRIOT 2x8 DDR3 
SDD-120 GB SAMSUNG 840EVO 

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