Titan Xp might be too much for cMP

4/13/2017

Anyone else try a new Titan-X Xp on a cMP?

Everytime I hit Heavy Lode Test Mode in CUDA-Z it shuts off my 4,1 12Core like a switch.

Not a good sign.

My PSU may be dying, but sure seems like this may be a bridge too far.

1080Ti good so far.

32 Comments

Milkreis

4/13/2017 04:39:21 pm

I will test it on Thuesday. I'm on holidays until Monday night.

Marius

4/13/2017 07:24:16 pm

I'm running on external power since I got a 780 from you.
While lots of people had no issues with power, mine kept switching itself of. Got a 5.1 with X5690's.

Never tried the Titan X Maxwell on internal power though...

So I should be fine with the Titan Xp:-)

Mark

4/14/2017 06:10:37 am

When running Xp under heaven 4K the Mac shutdown.

Spacedust

4/16/2017 12:12:50 pm

What are your CPU's, do you have any other PCI-Express cards installed?

Mark

12/30/2017 04:17:14 pm

I'm running Titan X Maxwell and it works fine with internal power.

Mac 4,1upgraded firmware to Mac 5,1
12 core 3.33ghz Westmere
64GB Ram
SSD Boot drive
4x SATA with Apple RAID Card

Benchmarked with Cinebench, Unigine, and Geekbench. Autodesk Flame installed and have rendered benchmark scenes. Never any unexpected behavior

Luis

4/14/2017 09:09:37 am

Just tried the Titan Xp on my 5.1 Mac Pro. Cuda-Z shuts down the mac if I use heavy load test mode. I may need to get an external power supply or perhaps use the SATA power connections to PCI-E 6 pin cable and then use the two motherboard 6 pin connectors with an adapter to 8 pin?. Kinda sad, but I still would like to get the Mac EFI bios for the card, any idea when it will be available?

Spacedust

4/16/2017 12:14:42 pm

What are your CPU's?

Luis

4/16/2017 04:04:43 pm

2 x 3.46 GHz 6-Core Intel Xeon

MVC Dave link

4/14/2017 02:19:19 pm

Not looking good, with my 12 Core 5690 I:m also able to shut down using first Titan-X Pascal.

So far 1080Ti has run CUDA-Z in Heavy Load Test for 5 minutes

Kind of scary to be so close to edge.

I'll try with W5690 (Single Hex)

Luis

4/16/2017 04:16:00 pm

Good news everybody!! Problem solved on my end without an external PSU. I used the 2 SATA power leads on the Optical drive bay to a 6 pin connector. I then used both of the motherboard 6 pin leads and combined them using an dual six pin to 8 pin adapter. After that booted and ran Cuda-Z on heavy load test mode for 30 minutes. System seems stable and did not shut down. Since I don't use the DVD rom drive, this solution is quick and very cheap. I am currently running Dual Six core Xeons at 3.46 Ghz, Four 3.5 inch 6 TB hard Drives. 64 GB or ram dual SM951 drives. So the system is fully loaded. Just need that bios :)

Evan

4/18/2017 07:34:44 am

Sounds smart, Luis! You just use standard off-the-shelf connectors? How much power can you draw from 2 SATA leads?

Mariano

8/28/2017 07:25:56 am

Hi Luis, I'm having some problems with the Titan X I bought from macvidcards. I now understand that is because the 6 pin and 8 pin hasn't enough power. I search but I'm not a hardware guy I can't even change a light bulb. So your solution looks pretty much easier than a pixlas mod for my situation. Did it work? could you share what cables you bought and how you installed it please?
Gracias!

Surrat

4/16/2017 11:27:03 pm

I have done the pixlas mod on my 5,1 12 core x5675.

The new Titan Xp is running great, and heavy load mode, doesnt cause any problems.

I have the 6pin and 8pin both tied together to a heavy cable going directly to the PSU board solder leads. I am not using the logic board 6pin leads at all. The load on the PCI slot shows in iStat as only 1.8amp(21watts) at the highest during heavy load.

Surrat

4/17/2017 05:17:35 pm

Tried Heaven at 4k, with no problems. No shut off, and fans only ramped up slightly. My 5,1 is 2012 with original x5675, 64GB mem, two HD, SD, BluRay, and OWC sata3 pcie card with 850pro. I think you guys with the dual 5690 should consider the pixlas mod, it provides all the power your GPU needs with no stress on the logic board.

Mandril420

4/30/2017 06:24:40 pm

Hi Dave. How are you getting your 1080Ti to run CUDA-Z in Heavy Load Test without shutting down? How are you powering your GPU?

My 2009 Mac Pro (4,1 upgraded to 5,1) shuts down immediately when running my 1080Ti in CUDA-Z in Heavy Load Test. My Mac Pro is 12-core 3.05 Ghz xeons.

I am using both power cables mini6pin to 8pin and mini6pin to 6pin connected to the 1080Ti. My 1080Ti is the founders edition made by Nvidia bought from their site.

Could my power cables be bad? Power cables look rather thin. I had a GTX 980 in there before with no issues. On the other pci slots I have an OWC accelsior card and a usb3 inatek card. Please help me :(

Thinking about weither doing the Pixlas mod or returning the GTX 1080Ti if I cant find a fix. Thanks!

Spacedust

5/4/2017 11:07:18 am

First feedback from X5675's owner proves I was right, your overspecification CPU's is the problem here.

X5690 in turbo mode takes 143,19W on first CPU and 130W on second CPU.

While X5675 takes only 107,94W on first and 95W on second CPU.

This means there is 35,25W + 35W = 70,35W difference between the CPU's which is a lot for the overloaded PSU. No need to mod anything just replace the CPU's and you will be just fine.

Mandril420

5/4/2017 01:04:32 pm

Hey Spacedust. But both my CPUs are already x5675. So why am I experiencing shutdowns then? :(

Neil

4/14/2017 09:02:02 pm

Has anyone run two 1080ti cards?

Mike

4/18/2017 11:32:12 am

I have two gtx980's running in a single 6 core 3.46 5,1 with no issues 1080 uses the same power so I assume it will be ok.

eagles99

4/17/2017 10:29:21 am

I got a Nvidia Titan XP card straight from Nvidia. I put it into a 2010 Mac Pro Tower running 10.12.4. I have no other PCI cards installed in the computer. The video card has the 2 power cords running into it as well from the Mac Motherboard.

I installed the beta web drive made for the Pascal GPU's that came out this week.

When I boot the mac it does boot correctly but the computer doesn't recognize the video card, if I view the system from a remote login I can see that the video card is picked up as NVIDIA CHIP 256mb and the system is on just not using the card fully, and my monitors show nothing just black.

So with this Titan XP would it have to be flashed to first run at the full PCI Express bandwidth inside OSX and also why is it not registering in my OS as itself, rather it says NVIDIA Chip 256mb? I know for sure the web driver is enabled when I check the OS remotely by logging in.

dave at MVC link

4/18/2017 11:07:55 am

99.999% of issues as described are operator error

see blog post about boot loop

driver or power cables

All 14 pins are required, not optional

driver must be installed AND selected

Ben

4/18/2017 01:25:58 pm

I am not sure if the NEW PASCAL DRIVER - 10.12.4 (16E195) 378.05.05.05f01 works properly for the Titan-X (Maxwell).

The driver upgraded as normal, but I noticed a significant reduction in frame rate on one of my more graphics intensive apps.

I rolled back to 10.12.4 (16E195) 367.15.10.45f01 and the problem went away. I have a 2012 5,1 - 2x 3.06 Ghz 6-Core Xeon.

Can anyone confirm if the New Pascal Drivers are supposed to be compatible with the Titan-X (Maxwell)?10.12.4 and 64GB Ram.

Thanks.

Francois

4/19/2017 04:20:54 am

Yes it also supports Maxwell. There's a new CUDA update that goes with the new web driver, did you install it?

eagles99

4/19/2017 12:50:43 pm

Does the new Titan XP run for you guys at full 5GT speed? or only half link speed in OSX? I have the newest Pascal beta web driver installed in 10.12.4 but the card's only showing up as NVidia 256mb chip, so I have a feeling it would need a EFI flash before it really works correctly in OSX right? Or is that not the case and it should work out of the box from Nvidia perfectly, as long as I have the nvidia beta drive for Pascal installed?

Ben

4/20/2017 12:45:56 pm

Hi Francois,

Yes I installed the CUDA update at the same time. The frame-rate drop was quite noticeable and disappeared after the rollback. I'll wait for the next driver update and try again.

dave MVC link

4/20/2017 12:48:13 pm

eagles99, please read my previous comment

eagles99

4/20/2017 02:45:51 pm

Dave but does the Titan XP run stock without a flash at 5GT speed in OSX in a Mac Pro? I know if someone went to buy a regular PC GTX680 for example and it wasn't flash it won't run at the full PCI speed in a Mac Pro.

Or are these newer cards compatible with Macs right out of the box in terms of PCI bus speed running at full, and the only thing they lack is the boot screen?

Ben

5/29/2017 10:42:53 am

I am still experiencing significant problems with my Titan-X Maxwell using the new Pascall drivers.

All apps appear to momentarily freeze graphics display for about half a second every 3 seconds. I get the same issue on the most graphics intensive game or just scrolling a safari web page. My 5,1 was previously behaving just fine. I tried updating to 10.12.5 and installing the latest drivers (including CUDA) but had the same problem. I am now having to use time machine to roll back to 10.12.4 to reinstall the old (non Pascall) drivers, a 12 hours+ process.

Is anyone else experiencing this issue or has any ideas why I am getting this freezing/stuttering?

Mandril420

4/30/2017 06:30:24 pm

Hey guys!. My 2009 Mac Pro (4,1 upgraded to 5,1) shuts down immediately when running my 1080Ti in CUDA-Z in Heavy Load Test. My Mac Pro is 12-core 3.05 Ghz xeons.

I am using both power cables mini6pin to 8pin and mini6pin to 6pin connected to the 1080Ti. My 1080Ti is the founders edition made by Nvidia bought from their site.

Could my power cables be bad? Power cables look rather thin. I had a GTX 980 in there before with no issues. On the other pci slots I have an OWC accelsior card and a usb3 inatek card. Please help me :(

Thinking about weither doing the Pixlas mod or returning the GTX 1080Ti if I cant find a fix. Thanks!

Spacedust

5/4/2017 10:57:59 am

Please tell me your CPU model.

Mandril420

5/4/2017 01:17:25 pm

Hey Spacedust. My CPUs are X5675 dual processor.

The power wires I had with my GTX980 before I think a bit looked thicker. The power wires I bought for the 1080Ti look a bit thinner 18awg maybe? I don't know if it could be that.

I have also read that the 1080TI can pull 150W from the 8 pin and 66W from the 6pin and that could make it shutdown. Someone suggested I get an EVGA Power link thingie that it should balance the power.

Do you think this can fix my power issues?

EVGA Powerlink
https://www.evga.com/articles/01051/evga-powerlink/

GTX 1080 Detailed Power Comp.
https://www.pcper.com/reviews/Graphics-Cards/NVIDIA-GeForce-GTX-1080-Ti-Review/Detailed-Power-Consumption-Testing

splitters for headphones link

1/6/2020 01:47:07 am

Picking the right monitor is going to have a huge impact on your gaming, and if you pick a bad one you won’t enjoy things as much as you should

Titan Xp might be too much for cMP

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