Can a 4870 and 5870 be used together?

I have a Mac Pro 4,1 with an Ati Radeon HD 4870.
I am using two monitors. I would like to upgrade to the 5870, and was wondering if I could keep the 4870 and run one monitor off each, can both cards be used in a Mac Pro at the same time? I do 3D and using two cards should speed up my viewport? Can the 5870 run two monitors at 2560 x1440 and 1900 x 1200 on its own?

• Asked by Christopher R
• Feb 10, 2011
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FCS3 performance: ATI 4870 vs ATI 5870 , FCP Motion Color .. any significant improvements ?

FCS3 performance: ATI 4870 vs ATI 5870 , FCP Motion Color .. any significant improvements ?

• Asked by Jim M
• Jan 15, 2011
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I have a mac pro with 2x2.93 GHz Quad-core Intel Xeon...with the ATI Radeon HD 4870.....can I upgrade to the new ATI Radeon HD 5870 Graphics card?

• Asked by Alex M from Belleville
• Aug 9, 2010
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i have a Model Name: MacPro2,1 Quad-Core Intel Xeon 3 GHz with ATI Radeon HD 4870. Can i reinstall my old radeon X1900 for two more monitors?

• Asked by William C from Brampton
• Jul 13, 2011
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Early 2009 Quad Core compatibility with the new ATI Radeon 5870 and Dual Displays

Its been 2 about 2 years since I bought my Mac Pro... Currently running an early 2009 2.66 Ghz Quad-Core Intel Xeon with the ATI Radeon HD 4870... Looking to make a couple upgrades to the system

1) Is it as simple as just swapping the two cards? or do I need additional hardware to make the upgrade?

2) Will the 5870 be compatible with my current 24 inch Mac LED Cinema Display (late 2008)?

3) If I were to run 2 monitors (was looking at the new thunderbolt display)... would it be possible to run one at 1920x1200 and the other at 2560x1440 or do they both need to be running at the same resolution off the 5870? OR would I be better off buying an additional Nvidia GT 120 to run the other monitor??

4) If I did run this setup would my current 8gigs of ram be enough? (I do a lot of HDR photography editing and processing involving multiple layers on very large format files)

any help would be greatly appreciated

• Asked by Chris E from Summit
• Jul 24, 2011
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Motion4  Will the HD 5870 significantly outperform the HD 4870 for Motion4?

• Asked by Philip M from Irvine
• Aug 31, 2010
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Is there any noticeable or appreciable improvement in day-to-day use?

This may seem odd but I have yet to find a thread whereby someone is using their ATI Radeon HD 5870 as intended with lets' say; in a 27-inch display with a 2009-2010 MacPro in OS 10.6.6.

Ironically, it’s one of two products on the Apple store (graphics section) that doesn’t list customer feedback.

Anyway, I’m considering the card but want to know what real-world difference (if any) there is for everyday computing. Example: Does it produce ‘better’ image quality when going full-screen or does it result in less hesitation in cover-flow?

• Asked by Daniel O from Yuma
• Jan 24, 2011
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Will the ATI Radeon HD 5870 Graphics Upgrade Kit work in a Mac Pro 1.1 (2006)?

• Asked by Brian C from Los Angeles
• Aug 9, 2010
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What does the ATI Radeon HD 5870 upgrade kit for an early 2009 Mac Pro consist of?

• Asked by Scott T
• Jan 18, 2011
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will the ATI Radeon HD 5870 work in a Mac Pro 3,1 8 Core early 2008

• Asked by Walter V from Everett
• Nov 27, 2011
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