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Other Hardware and Peripherals Other Apple systems and peripherals discussion.

ATI Radeon HD 4870 with Mac Pro


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samham

 
Member Since: May 19, 2010
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Hey all,

I have been trying to install 2 new Radeon 4870 graphics cards in my mac pro and I'm running into some issues. Powering each card requires 2 'connectors' that fit into the logic board. In order to use 2 cards however (each with 2 connectors) I would need 4 inputs on the logic board - I am only seeing 2 total?

Do I need to purchase some kind of adapter to power both these cards? Is there something I am totally missing?

Any advice would be greatly appreciated
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decypher

 
Member Since: Aug 20, 2010
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Quote:
Originally Posted by samham View Post
Hey all,

I have been trying to install 2 new Radeon 4870 graphics cards in my mac pro and I'm running into some issues. Powering each card requires 2 'connectors' that fit into the logic board. In order to use 2 cards however (each with 2 connectors) I would need 4 inputs on the logic board - I am only seeing 2 total?

Do I need to purchase some kind of adapter to power both these cards? Is there something I am totally missing?

Any advice would be greatly appreciated
The cards would need to be flashed to work under osx unless they are the new Mac version. I've heard people use an adaptor and the power supply from the cd bay to power the second card, there are some instructions if you google around. Let me know how it works because I've been wanting to get two of those or one 4970 in my early 2009 Mac pro.
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