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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Mac Pro with 2 ati 5870


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Semaka

 
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I'm looking to buy a new Mac Pro in the next couple of weeks. Specs are close to basic (3.2 nehalem, 6 gigs of ram and an ati 5870). Eventually I would like to upgrade it... meaning get a westmere 6 core (bye bye applecare), ssd and hopefully a second 5870. My question to the more mac savy ppl is: would it be possible to install and operate an additional 5870 in crossfire?
I've been reading some forums saying I have to install a PSU to run the second video card since the Mac Pro won't take more than 300 watts (for the PCI slots) and some wire mambojumbo that i have yet to get any specific info about. From the looks of it, I don't think it would be hard to install the PSU in the empty optics bay but would this kill my applecare thing and would the 2 cards work from a hardware/software point of view (in OSX and Win 7)?

Thank you.
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Semaka

 
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anyone?
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iggibar

 
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If any damages/problems are caused by you running something that is not intended to be run, you warranty/apple care will be void.

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You anticipate we will tell you how to turn your Mac Pro into a hackintosh?
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Sonicjet

 
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Quote:
Originally Posted by Semaka View Post
I'm looking to buy a new Mac Pro in the next couple of weeks. Specs are close to basic (3.2 nehalem, 6 gigs of ram and an ati 5870). Eventually I would like to upgrade it... meaning get a westmere 6 core (bye bye applecare), ssd and hopefully a second 5870. My question to the more mac savy ppl is: would it be possible to install and operate an additional 5870 in crossfire?
I've been reading some forums saying I have to install a PSU to run the second video card since the Mac Pro won't take more than 300 watts (for the PCI slots) and some wire mambojumbo that i have yet to get any specific info about. From the looks of it, I don't think it would be hard to install the PSU in the empty optics bay but would this kill my applecare thing and would the 2 cards work from a hardware/software point of view (in OSX and Win 7)?

Thank you.
If you want that kind of power,skip the mac pro,get a Dell XPS 9100,I know dell was always more pricy,no more. For the base price of a mac pro,you can grab an i7 920,an ATi 5970 and 12GB of ram with dedicated sound and 1.5Tb drives.
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CrimsonRequiem

 
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Is it even possible to do a crossfire on a Mac? I know you can do an SLI config.

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Originally Posted by harryb2448 View Post
You anticipate we will tell you how to turn your Mac Pro into a hackintosh?
More like a modded Mac Pro. I would say.

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Quote:
Originally Posted by Semaka View Post
My question to the more mac savy ppl is: would it be possible to install and operate an additional 5870 in crossfire?
I've been reading some forums saying I have to install a PSU to run the second video card since the Mac Pro won't take more than 300 watts (for the PCI slots) and some wire mambojumbo that i have yet to get any specific info about.
I'm not exactly sure what your goals are...but with most Mac Pro's, you can install 4 video cards. If each video card has 2 DVI ports...you can connect up to 8 monitors. Obviously if the video cards take up two PCIe slots...you won't be able to install 4 cards.

So with this being said...if your main goal is to run a lot of monitors from this Mac Pro...just install more video cards. If you want to run two 5870's in Crossfire...not sure you can do it.

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Sonicjet

 
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You might be able to replace the 5870 with an 5970,which integrates the twin 5870s into one card,might save you a buck too.
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rippingviper

 
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That depends doesnt it. I thought the video card has to be mac specific you can't just slam any old card in there.

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decypher

 
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Anyone have luck flashing the 5970 and powering it in their Mac pro? I want to do this in my 2009 tower and I've heard few had some luck but I haven't seen a definitive guide around.
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lazy4u1

 
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There's a guy on macrumors who is just waiting on the crossfire bridge to try the 5870 crossfire under windows, another guy cut a piece out of his case to fit the wiring. Sounds worse then it really is. He has picks
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dmw16

 
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Quote:
Originally Posted by harryb2448 View Post
You anticipate we will tell you how to turn your Mac Pro into a hackintosh?
What about this sounds like a Hackintosh? He wants to buy a MacPro and put an additional graphics card in it. You can't really make a Hackintosh out of a machine that's already a MACintosh.

Maybe he wants to use the dual cards in Windows via bootcamp for gaming, but again, that isn't a Hackintosh.
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lazy4u1

 
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Also i talked to an senior advisor in applecare and he said just to remove the PSU and 2nd 5870 in case u need to ship your mac for warranty repairs.So the 5870 crossfire set up will NOT void your applecare.
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Assuming that you could get crossfire working is it going to give you that big a performance boost? I haven't really researched it on the Mac side since I don't need it for what I do but I know that my wife did not notice a difference with many of the games she uses regularly on her Vista box.

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wfriction

 
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Sounds awesome Good luck
Good choice on getting an SSD as well - if you need any help choosing the best model to buy, let me know and I'll be happy to help out.
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