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Jbgloss

macrumors member
Original poster
Feb 20, 2011
98
0
Fort Lauderdale, Florida
Hello everyone!

Hey my Six Core Mac Pro comes in Tuesday, I have my 2 ACD's ready to roll. I have a Samsung 25" that I used with my old MacBook Pro. I am setting it up and it actually looks OK as a 3rd monitor. I was thinking keeping it open for e-mail etc...

My question is can the 5770 run both ACD's with the min ports and 1 DVI make a total of 3? Or do I need another 5770 to run a 3rd?

I guess I will find out Tuesday, but I am getting everything set up now and thought I would ask.

Thank You,

JB
 
Don't be surprised if only two of your displays work if you attempt to directly plug three of them into the 5770. As many have found out before you although there are 3 ports on these cards (all the ATI Radeon 5xxx series, both Mac and non-Mac) require one (or two?) active adapters to drive three monitors simultaneously. For example do a google search for something like "3 monitors with ati radeon". And of course there are the following two articles from Apple:

Mac Pro (Early 2009), Mac Pro (Mid 2010): Supported display configurations
Mac Pro (Mid 2010), Mac Pro (Early 2009): Issues with three displays and multiple DVI, HDMI connections
 
I was assuming the OP had ACDs with MiniDisplayPort.

If not then what ACDs are being plugged in?
 
I believe the two ACD's plugged into the two mini displayports will be ok but if the Samsung is connected to the DVI it will need an active, not passive, adaptor. My post was basically saying "heads up" there may be problems.
 
Here is my set up

Here is my set up - Fed Ex is delivering the CPU tomorrow at 2 so we shall see once I load everything up. I am assuming the ACD's will work in the two Mini's on the 5770 and the samsung with the DVI - or if I have to run to Apple in FLL to pick up an adaptor I will - hope not :)

Thanks to the board - I already have my extension cables etc...


196646_10150098656763309_713148308_6324739_1662130_s.jpg
 
Last edited:
So you're not using any adapters, so honestly there's no reason that second article should pertain to you at all IMHO. But, hey, everybody gets lemons I guess.
 
Thanks everyone-

Thanks everyone -

Movie that is an awesome setup :) and good to know!!!!

Rmitch I was going to have only 2 ACD but when I was tearing down my old set up I had the samsung but I think I will be looking at another 27 shortly :) probably grab another 5770 and use it...

That will give me something to look forward to in a few months - anxious for the new fc I have my eye on the Canon fx100 but it does not play nice with fc - going to drop the next on a camera then he third screen :)

Yes counting the hours now lol - :)


Thanks!!

JB
 
I had this question myself and have explored it quite extensively.

To put it simply, in your situation you will be fine with 3 displays in 1 5770. There are only issues running 3 displays on these cards where there are passive adapters on the MDP outputs from the GPU. This doesn't include you.

I had the problem with 1x27"ACD and 2x23"ACD. The 23" are DVI so needed an adapter. The std Apple adapter doesn't work in this situation. The Apple dual-link adapter will allow this to work.

On a side, it was lucky in that when I discovered this I went and kicked up a fuss at my local Apple store and they gave me another 5770 for free!!

I hope this helps
 
Sweet!!

Thank you everyone!!

I am waiting, waiting LOL it is coming around 2PM EST

Have everything ready to go - I love you got a free 5770 great work!

If I go to a third ACD I will grab another one, but I am holding off a few months. I am actually heading to Colombia for a month soon so I will only get a few weeks in and I am back to my MacBook Pro.... I am sure those weeks are going to spoil me!!

Have a great day everyone, I know I will, well as soon as she gets here :)
 
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