Gaming graphics in Mac Pro 3,1

Just go MACcing!

Hi Bo, there's NO PROBLEM running games on a MAC PRO 3.1! See my signature for more details. For the video card I used a EVGA GTX 670 FTW 4GB :thumbup:, this can be a PC VERSION (full driver support in MAC OS X 10.8.2) no matter what.

I used (2x) MAC mini PCIe to PCIe PC Y-splitter cable's and cross-wired both my NVIDIA GT8800 MAC-EDITION and the EVGA GTX 670 FTW PC VERSION for maximum logic-board PCIe power balancing!

These cables are both connected to the onboard PCIe power connectors: See image below

https://www.dropbox.com/s/2357wpm1g20vv0k/Onboard_PCIe.jpg



http://www.moddiy.com/products/Appl...Dual-PCIe-6%2dPin-Video-Card-Power-Cable.html

Hook-up your monitor to the EVGA and keep your ATI-MAC edition with a (added) simple TFT monitor for bootscreen and/or admin tweaks!

Screenoptions in MAC OS X 10.8.2.

https://www.dropbox.com/s/3mpdg6w172oa51y/BOOTCAMP 5_0.jpg

Output EVGA OC Scanner X 2.2.2

2013/01/19 @ 20:12:55 >> Detecting GPUs...
2013/01/19 @ 20:12:55 >> Found 2 GPUs.
2013/01/19 @ 20:12:55 >> - GPU 1: NVIDIA GeForce 8800 GT
2013/01/19 @ 20:12:55 >> - Bus ID: 1
2013/01/19 @ 20:12:55 >> - Cores: 112
2013/01/19 @ 20:12:55 >> - Partitions: 4
2013/01/19 @ 20:12:55 >> - Shader Pipes: 7
2013/01/19 @ 20:12:55 >> - Memory size: 0MB
2013/01/19 @ 20:12:55 >> - Memory type: GDDR3
2013/01/19 @ 20:12:55 >> - Bios: 62.92.20.00.16
2013/01/19 @ 20:12:55 >> - GPU temperature: 67.000°C
2013/01/19 @ 20:12:55 >> - Graphics driver:
2013/01/19 @ 20:12:55 >> - True clocks - GPU clock: 300MHz - Memory clock: 100MHz - Shader clock: 0MHz - GPU voltage: 0.000V
2013/01/19 @ 20:12:55 >> - PState 0 - GPU clock: 600MHz - Memory clock: 900MHz - Shader clock: 0MHz - GPU voltage: 1.050V
2013/01/19 @ 20:12:55 >> - PState 12 - GPU clock: 300MHz - Memory clock: 100MHz - Shader clock: 0MHz - GPU voltage: 0.950V
2013/01/19 @ 20:12:55 >> - Fan speed: 30%
2013/01/19 @ 20:12:55 >> - Fan speed: -1 RPM
2013/01/19 @ 20:12:55 >> - GPU 2: NVIDIA GeForce GTX 670
2013/01/19 @ 20:12:55 >> - Bus ID: 2
2013/01/19 @ 20:12:55 >> - Cores: 1344
2013/01/19 @ 20:12:55 >> - Partitions: 4
2013/01/19 @ 20:12:55 >> - Shader Pipes: 4
2013/01/19 @ 20:12:55 >> - Memory size: 4096MB
2013/01/19 @ 20:12:55 >> - Memory type: GDDR5
2013/01/19 @ 20:12:55 >> - Bios: 80.04.4b.00.70
2013/01/19 @ 20:12:55 >> - GPU temperature: 68.000°C
2013/01/19 @ 20:12:55 >> - Graphics driver: 9.18.13.1090
2013/01/19 @ 20:12:55 >> - True clocks - GPU clock: 1005MHz - Memory clock: 3004MHz - Shader clock: 0MHz - GPU voltage: 0.000V
2013/01/19 @ 20:12:55 >> - GTX 600 series - GPU base clock: 1006MHz - GPU boost clock: 1084MHz
2013/01/19 @ 20:12:55 >> - PState 0 - GPU clock: 1293MHz - Memory clock: 3004MHz - Shader clock: 0MHz - GPU voltage: 0.988V
2013/01/19 @ 20:12:55 >> - PState 2 - GPU clock: 1293MHz - Memory clock: 3004MHz - Shader clock: 0MHz - GPU voltage: 0.988V
2013/01/19 @ 20:12:55 >> - PState 5 - GPU clock: 862MHz - Memory clock: 810MHz - Shader clock: 0MHz - GPU voltage: 0.988V
2013/01/19 @ 20:12:55 >> - PState 8 - GPU clock: 324MHz - Memory clock: 324MHz - Shader clock: 0MHz - GPU voltage: 0.988V
2013/01/19 @ 20:12:55 >> - Fan speed: 46%
2013/01/19 @ 20:12:55 >> - Fan speed: 1890 RPM
2013/01/19 @ 20:12:55 >> GPU monitoring thread started up ok.
2013/01/19 @ 20:13:47 >> Freeing EVGA OC Scanner X resources...
2013/01/19 @ 20:13:47 >> Exit from EVGA OC Scanner X.

EVGA installed in Slot-1, NVIDIA MAC installed in Slot-2

NVIDIA GT8800:
1x PCIe 6-pin from onboard connector #1

EVGA GTX 670 FTW:
1x PCIe 6-pin from onboard connector #1
1x PCIe 6-pin from onboard connector #2
1x PCIe 6-pin from onboard connector #SPARE

https://www.dropbox.com/s/r8zuz3eda249mem/EVGA_GTX670_FTW_PC_in_MACPRO.jpg

RED: indicates a non-compatibility issue within Windows using the scanner on the NVIDIA GT8800 MAC_EDITION!

Goodluck mate and cheers on your choise to use your MAC!!!! RUNS LIKE A HOT KNIFE THRU BUTTER! ;-)

I don't think its a good idea to use both your 5870 and a 670 together without an additional power source. That being said your list of requirements cannot be met by using just a 670 as it does not have EFI so you would have no boot screens. I ran a 670 in my MP 3,1 for awhile and it ran fine using both power cables connected to the motherboard, however performance in games such as COD Black OPS and Batman Arkham City was not so great in OSX. I never bootcamped, so I cannot comment on performance in windows on the machine. The 670 is significantly faster then the 5870, it does have a display port (not mini), can support three or four monitors, but you will not get a boot screen. You could look at a 680 but its more money and requires an 8 pin power connector which some people have used with adapters to 6 pin. For gaming only, I think a 670 would be fine for your needs.

I wonder if that double card deal you set up would work with an atu hd 2600 and an amd hd 6870...

Phrygian said:

I wonder if that double card deal you set up would work with an atu hd 2600 and an amd hd 6870...

Click to expand...

You could use this TDP database to figure it out as long as both cards do not exceed 300W. In your case, 45+151=196 < 300.

Killerbob said:

Would that be any different if I were to combine the original GT8800 (as supposed to the HD5870) with a GTX680 (if I can get one with Displayport)?

/Bo

Click to expand...

I think the GT8800 requires one power connector and the 680 definitely requires two, one 8 pin and one 6 pin, so no, that would not work either.

Killerbob said:

Thanks!

So you're saying "install a GTX670 in addition to the HD5870. Powering both off the MoBo using splitter cables. Connect my ACD to the GTX card, for primary use in Windows and in OSX, and use any TFT connected to the HD card for boot and normal second screen also in Windows and OSX"?

You mention the GTX670 card, what about the GTX680 cards? And, any suggestion for a GTX670/680 card with Displayport?

/Bo

Click to expand...

I choose the GTX 670 FTW because it met my needs and is much cheaper than the GTX680! I also used a more basic card GT8800 Mac Edition for just the bootscreen/admin purpose! The gaming performance comes from my GTX670! Once booted up in OS X or Windows both monitors can be used in the same Os. E.g whem tweaking a app/game I used the 19 inch for the precision software and GPU-z tool to monitor!

In OS X I use both monitors the same way! E.g COD4 runs a steady 60fps in OSX!



Splitting the cables to each card is for better load balance on mobo! And yes one of the four will be a spare!

Must say I'm very happy with this setup, but therfore I'm (not yet ;-) a hardcore gamer that needs 3D surround!

But the additional GTX670 gives me a whole new experience in use of my mac pro 3.1.

Goodluck on your choise, Bo


----------

Killerbob said:

Wouldn't that be solved via powercable splitters?

The 8800GT uses 105W and the GTX680 uses 195W, so exactly 300W combined.

/Bo

Click to expand...

Yes make a cross-link connection to the GTX670 and youre fine on the power!

NVIDIA GT8800:
1x PCIe 6-pin from onboard connector #1

EVGA GTX 670 FTW:
1x PCIe 6-pin from onboard connector #1
1x PCIe 6-pin from onboard connector #2
1x PCIe 6-pin from onboard connector #SPARE



FORGOT TO MENTION: running BootCamp 5.0 and not a VM because the drivers in a VM are also virtual, so no native connection to the GTX670 with the 310.90 WHQL Drivers!



Cheers

Killerbob - I would advise only having a single graphics card in the machine at one time. It avoids driver conflicts, power issues and noise.

As you know, the 5870 is beginning to show its age in games that require a lot of VRAM, Skyrim in particular. This is why folks are looking at cards with 2Gb or even more. At the moment, 2Gb is plenty for games run at 1080p on a single monitor that are not loaded to the max with textures. As soon as you start running at a higher resolution (say 2560x1440 on the Apple 27" display), go to triple monitor setups or start loading the textures up in the game, you can easily go through that 2Gb. Skyrim and BF3 are examples.

I would have a look at either the 3Gb ATI cards like the 7970 or the 4Gb nVidia 670/680 cards. If you are careful you can still find ones with 2x 6-pin. The MSI 680 4Gb Twin Frozr is one. If you can only find a card with one 6-pin and one 8-pin, you have to look very carefully at the peak load TDP. Some of these cards self-overclock if the power supply and temperatures are good and this could in theory take it over the 225W your MP is specced to deliver.

As I am sure you will have read, that is made up from 75W from the PIC slot and 75W from each of the two 6-pin leads for a total of 225W. The 300W figure you see going around is based on the assumption that you are using a second card (such as a pair of 5770s) so that second card gets its own 75W from its own PCI slot.

Keep it simple and only have the one card. Use the free app called BootChamp to swap from OSX to windows easily and keep your old card safely somewhere. It it all goes horribly wrong, you can pull the new card and pop in the Apple 5870 to diagnose faults.

Killerbob said:

I assume then that I will not be able to put in a GTX690 card, as they require 300W?



That was my originial plan, but it seems impossible to have your cake and eat it too

The HD7970s that are available, will they work in the MP3,1, and will they have a boot screen?

/Bo

Click to expand...

In the 7970 thread I was informed that the Gigabyte 7950 uses only 2 6-pin so it seems its more than safe to use in your Pro. Whenever 10.8.3 rolls around we'll hopefully have official/semi-official support for these cards.
I was looking into the modular PSU for a second 5870 but decided against it, I'd lose the space for more drives in the ODD and would it generate a decent amount of heat. If you decide to pursue the 670 you should take those two into consideration.

Killerbob - the 690 needs external power to run. See the big sticky thread for 6xx and ati 7xxx cards that have been found to work.

Killerbob said:

1) If I keep the HD5870 (for boot purposes only, switching the monitor cable to it, if I need it), adding a a GTX69, what sort of conflicts could I experience?

Click to expand...

No reason to keep it in the computer. That will just use up power, slots, and create more heat to get rid of. Just keep it handy in the closet to reinstall in case you have bootup or driver issues.

I see.

If it were me, I'd pay a little extra for a Macvidcards Nvidia card, which have boot screens. Then there would only be one card. It would be fast, it would have boot screens, and it wouldn't require all this nonsense with extra power supplies. Less energy, less heat, less opportunity for problems, more slots free, optical bay free, and no external crap.

It is basically what you originally asked for with your 4 requirements, before all this weird stuff about y-cables and multiple cards.

Also, since the new card would have boot screens, you'd be able to sell your Apple 5870 for a decent chuck of money, which would offset the cost of the new card.

ActionableMango said:

I see.

If it were me, I'd pay a little extra for a Macvidcards Nvidia card, which have boot screens. Then there would only be one card. It would be fast, it would have boot screens, and it wouldn't require all this nonsense with extra power supplies. Less energy, less heat, less opportunity for problems, more slots free, optical bay free, and no external crap.

It is basically what you originally asked for with your 4 requirements, before all this weird stuff about y-cables and multiple cards.

Also, since the new card would have boot screens, you'd be able to sell your Apple 5870 for a decent chuck of money, which would offset the cost of the new card.

Click to expand...

I agree. Just hope they will make some HD 7000 cards available for MP soon...

Killerbob said:

Unfortunately Macvidcards have no cards with Displayport, and they are seriously behind on their mods.

Click to expand...

atually w have GTX570 with DisplayPort in 1.2 GB size as well as some GT120s shortly

I have a GTX580 with DisplayPort but it needs external power.

Had the Mac K5000 come out in October as the press releases claimed, there would be GTX670 & GTX680 cards with EFI and DisplayPort.

Apple and/or Nvidia and/or PNY have dropped the ball and the cards are late. So we have nothing to work with.

We have extracted the UEFI on Retina MBP and new 2012 iMac but the new machines use UEFI with GOP drivers.

Sadly, Mac Pro got earlier version of EFI that uses UGA. So the giant crop of nifty new UEFI cards from Nvidia and AMD DON'T WORK on Mac Pro.

The real sp[eculation should be on future of 2013 Mac Pro. Do they switch to GOP and make all prior cards unusable, and thus new cards unusable on previous Mac Pros or do they continue using their pre-release EFI that no longer complies with UEFI as implemented by WIndows world?

Bit of a conundrum, actually.

Confused!

MacVidCards said:

Sadly, Mac Pro got earlier version of EFI that uses UGA. So the giant crop of nifty new UEFI cards from Nvidia and AMD DON'T WORK on Mac Pro.

Click to expand...

Hi macvidcards,

Please explain what you mean! Confusing to me....

Cheers

BDM STUDIOS NL said:

Hi macvidcards,

Please explain what you mean! Confusing to me....

Cheers

Click to expand...

Apple uses an apple specific EFI not standard EFI..

BDM STUDIOS NL said:

Hi macvidcards,

Please explain what you mean! Confusing to me....

Click to expand...

It was first discussed in this thread at netkas.org forum, and see here for some discussion of UGA and GOP. This will probably become an important issue if the next generation Apple video cards are not backward compatible. Also I am wondering if the delay of Quadro K5000 for Mac has anything to do with Apple switching to GOP.