8 Replies Latest reply: Sep 10, 2013 5:48 AM by yycBrowncoat
yycBrowncoat Level 1 Level 1

HI all,


I'm running a Mac Pro MA356LL/A  with the stock graphics card. I'm wondering if there's a way to get it driving 3 23" Cinema HD screens.


Has anyone done this before, sucessfully?


System Specifications are : http://support.apple.com/kb/SP30


I'm running with the stock graphics card, the NVIDIA GeForce 7300 GT 256MB (single-link DVI and dual-link DVI).


Any help on this would be greatly appreciated!!

Mac Pro, Mac OS X (10.7.5)
Solved by The hatter on Sep 6, 2013 12:10 PM Solved
7300 is over 7 yrs old has 256MB and lacks some of the newer feature specifications.  Some more info about using 3 displays and when you do and do not need active or dual-link (and your 23" ACD doesn't) Atlona (Dual Link) DVI to Mini DisplayPort Converter for Apple 27-inch LED and 27-inch iMachttp://www.atlona.com/Atlona-Dual-Link-DVI-to-Mini-DisplayPort-Converter-USB-Pow ered.htmlMac Pro (Early 2009), Mac Pro (Mid 2010), Mac Pro (Mid 2012): Issues with three displays and multiple DVI, HDMI connectionsIt's not the USB data that is needed to run three displays. It's the extra POWER.  In the Apple article, they say the only solution they endorse is their US$100 Dual-Link adapters. Check the table at the end of the article. Mac Pro (Early 2009), Mac Pro (Mid 2010): Supported display configurations Readers here have found that if you have two Brand-X Powered adapters, aka active adapters, it also works fine.These do not always require another USB. If designed recently, they can pick up a power pin in the Mini DisplayPort interface.AMD (makers of the 5770 and 5870) lists the qualified POWERED adapters that meet their most stringent requirements. Look down the page and you will find several qualified Active Mini DisplyPort to various others, such as HDMI. These adapters are available from other outlets, such as Amazon, sometimes for far less than the Apple adapters.http://support.amd.com/us/eyefinity/Pages/eyefinity-dongles.aspx The other desktop monitor will plug directly into the DVI port on the card and the 40 inch tv will still connect via HDMI over the second Mini Display port.That will work only if you use an active Mini DisplayPort to HDMI adapter.The only (someone) have found to work (2009)http://www.alibaba.com/product-gs/337561577/miniactive_display_port_tohdmi.html You can connect a DVI to HDMI adapter or cable to an active Mini DisplayPort to DVI adapter but that won't give you any audio over HDMI. You could connect the DVI displays to the Mini DisplayPorts with active adapters and use a DVI to HDMI cable or adapter from the DVI port to the TV.If you want audio via HDMI, you can use audio from the Mac Pro's optical output with this DVI to HDMI converter:http://www.apogeeinc.net/products/item.aspx?item=2745 Active MDP to HDMI audio and video converter:http://ca.startech.com/AV/Displayport-Converters/Mini-DisplayPort-to-HDMI-Active -Video-and-Audio-Adapter-Converter-Mini-DP-to-HDMI-1920x1200~MDP2HDS Discussion: Using three ports.https://discussions.apple.com/thread/2734984 
Reply by The hatter on Sep 6, 2013 9:14 AM Helpful
yes with this ATI Radeon 5770 http://store.apple.com/us/product/MC742ZM/A http://www.amazon.com/Apple-ATI-Radeon-5770-MC742ZM/dp/B003Z6QH6M http://www.bhphotovideo.com/c/product/726537-REG/Apple_MC742ZM_A_ATI_Radeon_HD_5 770.html Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)http://support.apple.com/kb/HT3382Guide to Apple graphic display adapters neededhttps://support.apple.com/kb/HT3235
Reply by The hatter on Sep 6, 2013 9:36 AM Helpful
It supports three. you only need dual-link active minidisplay adapters for higher resolutions above 1920 x 1200 And long overdue to dump the 7300 - before it dumps you - and 5770 and Lion go well together too.

All replies