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On Apple's site they say
All-new, high-performance graphics cards from ATI deliver the fastest Mac graphics performance ever. A 16-lane, double-wide PCI Express 2.0 graphics slot supports the latest graphics cards for up to 8 GBps of data throughput. And by supplying up to 300 watts of total power to all PCI Express slots, the Mac Pro provides the headroom for high-performance, next-generation graphics cards.

And HERE it shows that the GTX 580 needs 363 watts under load...

Guess the image in my original post is the right way to go...

Thanks.
 
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On Apple's site they say


And HERE it shows that the GTX 580 needs 363 watts under load...

Guess the image in my original post is the right way to go...

Thanks.

that power apple is talking about is to the slots, not to the motherboard PCI-e output connectors

i mean, what do you think gt120 and other non-connector cards is pulling power from? air? :rolleyes:

also, the power listed in your link is socket wattage, aka for the whole computer.

The GTX 580's TDP is 244 watts.
 
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My final question is how do I boot into windows if I can't load the boot screen?
Do I have to choose bootcamp in startup disk every time I want to use Windows?

Thanks.
 
Hold down the option key at post. Choose the correct HD. I don't even install boot camp. All native drivers for my Win 7 Professional. But it appears that it will always boot to OS X 1st if left alone.
 
Hold down the option key at post. Choose the correct HD. I don't even install boot camp. All native drivers for my Win 7 Professional. But it appears that it will always boot to OS X 1st if left alone.

Boot camp is not a program that affects the bootloader.

My final question is how do I boot into windows if I can't load the boot screen?
Do I have to choose bootcamp in startup disk every time I want to use Windows?

Thanks.

Pretty much.
 
ATI 5870 driver install

I have a new problem.

I've just uninstalled the ATI drivers on Windows 7 (Bootcamp) with a view to updating them just like I have done with Nvidia drivers for the last few years and on restart into Windows all I get is a black screen...

I can start Windows fine with my old GTX285 but I would like to use the new ATI 5870 if possible...

Any ideas on how to avoid a Windows reinstall?

Thanks.
 
I have a new problem.

I've just uninstalled the ATI drivers on Windows 7 (Bootcamp) with a view to updating them just like I have done with Nvidia drivers for the last few years and on restart into Windows all I get is a black screen...

I can start Windows fine with my old GTX285 but I would like to use the new ATI 5870 if possible...

Any ideas on how to avoid a Windows reinstall?

Thanks.

Boot into safe mode and revert to an older system restore point.

If you can't even get into safe mode, boot from the Windows 7 DVD and perform a startup repair.
 
How do you boot in Lion if having a black screen?

Hi guys. I'm just wanting to upgrade to some powerfull video card as well. I bought an ATI HD 5850 1 GB and it does work on Windows and Mac but I'm wondering how to boot in any OS since using the nVidia 580GTX isn't recognized by the OSX. I'm figuring out that having 2 cards (one for Mac and one for windows) solves the booting problem but that does not produce any conflict?

Thanks in advance for your help!

Ø :)
 
I am using a GTX 570 (alone), working under Win7 and Lion, no boot screen of course.
To boot under windows or os x, I use BootChamp (OSX) or the BootCamp Assistant (Windows) : both let you choose the OS you wanna boot ;)
 
I am using a GTX 570 (alone), working under Win7 and Lion, no boot screen of course.
To boot under windows or os x, I use BootChamp (OSX) or the BootCamp Assistant (Windows) : both let you choose the OS you wanna boot ;)

Hey, thanks so much for that info! So the GTX 570 does run under Lion? Which kind of Mac do you use? Mine is Early 2008. Sorry for making more questions, but there are not too many video cards in my state, so I have to order it to another state with no return if it doesn't work.

Have you tried it with Snow Leopard? I'm asking this because I've been told that there is Bootcamp version 4 and I don't have that one, so I need to boot from lion in order to restart in Snow Leopard, in order to restart Windows and I would like to delete Snow Leopard to recover some HD space (plus, minimizing such amount of unnecessary steps to go into Windows).

Thank you very much for your reply! It does help a lot!

Ø3 :)
 
Hey, thanks so much for that info! So the GTX 570 does run under Lion? Which kind of Mac do you use? Mine is Early 2008. Sorry for making more questions, but there are not too many video cards in my state, so I have to order it to another state with no return if it doesn't work.

Have you tried it with Snow Leopard? I'm asking this because I've been told that there is Bootcamp version 4 and I don't have that one, so I need to boot from lion in order to restart in Snow Leopard, in order to restart Windows and I would like to delete Snow Leopard to recover some HD space (plus, minimizing such amount of unnecessary steps to go into Windows).

Thank you very much for your reply! It does help a lot!

Ø3 :)

Read this thread : https://forums.macrumors.com/threads/1242349/
You should fine all informations needed.
But, in short, GTX 5xx are working under Lion 10.7.2 with a little tweak.
I provided links in this thread where you can find any extra info about making fermi based cards working under Lion.
The best you can do is read the thread and if any question, ask them there ;)
 
Read this thread : https://forums.macrumors.com/threads/1242349/
You should fine all informations needed.
But, in short, GTX 5xx are working under Lion 10.7.2 with a little tweak.
I provided links in this thread where you can find any extra info about making fermi based cards working under Lion.
The best you can do is read the thread and if any question, ask them there ;)

Thank you very much again, mate! Will read the thread!

Ø3 :)
 
I have the 580 working great on windows only... Heres what I did.

I used two of these cords to go from the motherboard ports (right below the PCI express slots) and hooked them up to the included cord (2 6 pin to one 8 pin)

http://www.amazon.com/PCIe-Power-Cable-nVidia-Video/dp/B002UR1654

I then bought this on amazon and hooked it up to one of my unused hard drive connectors which then connects to their included cord for the last 6 pin PCIe port.

http://www.amazon.com/gp/product/B002LBROAA

Hey there!

I bought an EVGA 580 GTX 3GB to go with my 4,1 Mac Pro and have done the ATY_init kext changes.

When I boot up the screens are blank (no signal from 580 GTX) but I can hear the login screen if I mistype my password (indicating I'm at least booting up). With a GeForce 120 in the top slot hooked to the 2x 30" screens I can get into Lion OS X and the 580 GTX isn't there, likewise in Win7 Bootcamp - it's not appearing on the device list. I can hear the fan on the card going.

zealotzuo mentioned he had this happen due to using only 2x 6pins (running only a single 6pin to the 2x 6pin -> 8pin adapter, and 1x 6pin direct to the 6pin port on the card) so it looks like I might have the same power issue...

Is anyone able to confirm if this solution looks ok?

I've ordered one of these to convert my spare optical sata to molex: http://www.ascent.co.nz/productspecification.aspx?ItemID=355809

This will then connect to this chain of cables:
LIVd6.jpg


  • I'd run 1x 6pin from Mac Pro logic board direct to the 6pin port on the 580 GTX.
  • I'd then run that converted optical bay cable and the other 6pin from the logic board to the dual 6pin to 8pin converter in the picture to the 8 pin port on the 580 GTX.

Is this the right thing to do? So scared :(
 
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That should work for low demanding stuff, but it's risky if you plan to stress the card.

Isn't there any LED on the card saying it has enough power ?
I currently have an Asus GTX 570 DirectCU II wich requires 1 6pins + 1 8pins, just like you 580.

What I did is that I used the power of 2 sata connectors to 1 6pins.

My card has LED going green if the card has enough power.

I'm playing like this since a few month, and its working really great.
But caution with the 580 as it eats a lot more power than my 570 ;)
 
Hey there!

I bought an EVGA 580 GTX 3GB to go with my 4,1 Mac Pro and have done the ATY_init kext changes.



Is this the right thing to do? So scared :(

Hopefully you don't mean that you have changed anything in ATY_init.

Be sure you got a newer one that is 64 bit for Lion.

As far as power goes....I totally would NOT do it with those long runs of cable. Keep in mind that every inch of wire is just adding resistance to the circuit. Instead of passing energy to the card, some of the power will be used to heat the wire up instead. When you are trying to milk EXTRA power out of a circuit, you want to keep the cable runs as short as possible.

If you can't crimp the cables yourself, keep looking for shorter bits. Or find a way to use fewer adapters. Newegg has a bunch of options, it's tough to find them but keep looking. But obviously, it would be better to take that middle piece out, so find pieces that skip it.

Blow $20 now and (potentially) save yourself a $1000 Logic Board later...well worth a little time and bother.
 
Hey guys,

Sorry for the slow reply, I've been traveling a bit. Great news - I took a leap of faith and tried the method I described above and it works!

I've played about 10 hours of BF3/Skyrim and it's fantastic at 2560x1600 and smooth as silk.

I'm running the right screen off the GT120 and the main left screen off the 580. I'm yet to plug the CD drive back into the mix but hoping it'll be fine as I hardly ever touch discs nowadays.

If anyone has any questions let me know, otherwise thanks for all the feedback and words of warning (I took the risk willing to have a fireballing Mac Pro).
 
Hoping someone can shine some light on this before I have to cut my losses and return the card.

I've got a 2008 Mac Pro and wanted to upgrade from my gtx285 to the 580, mainly for use in bootcamp playing games. Pretty sure I went the exact same route as has worked flawlessly for a bunch of people: connected the two 6Pins from the logic board to the provided dual6->8 adapter, and I bought a MaleSata to dual-FemaleMolex adapter, which I connected to the provided 6Pin->Dual Molex. I have the windows partition set as my startup drive and it will boot and seems to work just fine, but as soon as it's under any pressure whatsoever (ie. less than a minute of Skyrim) my computer locks up.

This would make me think that it's a power issue, but it seems like I've powered it the same way as everyone else, so I'm confused...
 
I know everyone thinks I am a worry wart because I STRONGLY suggest external power to run cards with 8 pin inputs, but it certainly sounds like you might have a power issue.

Do you have an old PC PSU you could run from to find out?

Or even a Windblowz PC to try it out in?

Might just be a bad 580 or a heat issue. Try running EVGA precision and see if it always freaks out a certain temp.

Frequently when a game crashes in Windows you can "control/alt/delete" into task manager and get back to desktop.

And as an additional word of wisdom, a guy over at Creative Cow Forums just burned up his PSU, Logic Board, and one of his Xeons. Want to guess how? He had an Avid card he wanted to run alongside a GTX285. So he used a power splitter......
 
My understanding was that as long as I wasn't trying to power BOTH cards, that the PSU in the MacPro was more than sufficient (950W I think?) to support the 580. My roommate doesn't have a PC, so will try installing the card in his machine to confirm the issues isn't with the card. Sounds like for ease-of-process I'm better off returning the 580 in exchange for a 480 but is the performance difference between that and the 285 substantial enough that it's still worth upgrading?
 
If the issue is power, a 480 isn't a step in right direction. If issue is power than a 470/570 is the route to go.

The problem with a GTX285 in WIndows is that it is DX10 only. So things like the improved textures for Crysis2 that rely on DX11 are simply not useable on GT2xx cards.

The fact that there is a GIANT NUCLEAR PLANT less than 100 miles from me doesn't seem to matter to my circuit breakers when I run both air conditioners. Sooner or later they SNAP OFF.

Much like in the Mac Pro, the issue isn't the power available from the supply, the issue is the wires between. Until I drive down to San Onofre and run special lines to my house, or you bust open the Mac Pro case and run special lines from the 12V side, the amount of available power at supply does NOT MATTER AT ALL.

But be scientific, and try the card out somewhere with PLENTY of power first. You really might just have a flakey 580.
 
Thanks for your help. I gave up on the 580 'cause it got too close to my return deadline. Shipped it back and thinking about ordering a 470 or 570 - if I want something that'll just plug in and work with no hassle (like the 580 was) do I have to step down as far as the 470 or should the 570 work hassle-free?
 
In 10.8 the 570 is likely hassle free, but in 10.7.3 it requires adding device id to drivers.

I tried a 560 in 10.8 and it worked great using ATY_Init.

Likely means 570 and 580 will too.

Didn't even have to remove AGPM.

Don't know if there will ever be an EFI ROM for 5xx cards.
 
Thanks for all your help, MacVidCards. So it's just the 580 you caution against because of the power issue?
 
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