Apple Cinema Displays

Question

Apple Cinema Displays

Would like to use my two 30" Apple Cinema Displays DVI 2560 x 1600 in full resolution and have not found the right graphics card.

Have:

Mac Pro Model Identifier: MacPro4,1

Early 2009

Processor 3.32 GHz Quad-Core Intel Xeon

Memory 48 GB 1066 MHz DDR3 ECC

Graphics ATI Radeon HD 4870 512 MB

Software Mac OS X Lion 10.7.5 (11G63)

Have tried an ATI Radeon 4870 x2 Gb but still can't get full resolution on 2nd monitor.

Any recommendations for graphics card?

Thanks

null-OTHER, Mac OS X (10.7.5), 48 GB 1066 MHz DDR3 ECC

Posted on Jan 11, 2016 9:31 AM

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Answer 1

lllaass

Level 10

210,519 points

Jan 11, 2016 10:02 AM in response to Lloyd Schnuck

That monitor has dual-link DVI input.

For video cards with a mini displayport you need an expensive ($99) mini displayport<dual-link DVI adopter.

A card with a dual-link DVI output will work

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Answer 2

Jan 11, 2016 11:09 AM in response to lllaass

A properly-functioning 4870 works fine from its Dual-Link DVI output, PROVIDED, you use a Dual-Link DVI cable. I have one card (out of the three I bought new) where the DVI output has failed, but the others (including VGA from a DVI-I adapter) still work.

All Dual-Link DVI cables have all pins in the grid present, but Single-Link DVI cables may not have the center columns, or may have the pins but not connected end-to-end.

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Answer 3

Jan 11, 2016 11:12 AM in response to Grant Bennet-Alder

Have a minidisplay port and adapter as well as the x2 card with two DVI connectors and both monitors will display, one at 2560 and the second will max at 1280, does this mean this is a Single-Link DVI cable since 1280 is the best #2 will display?

would like to have both at 2560,

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