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Nvidia GTX Titan X 12 GB for mac.
- Thread starter ilegal31
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If you are into that kind of stuff, then you need something like this. You can check all of your appliances too.
WTF?
Incredible story this one. I thought we could see that only in movies, wrong I was ;o)
OK, pulled out my Kill-a-Watt just for you.
Total system power - Mac Pro 5,1 - 3.46 GHz 6-core - Titan X:
120W - Idle OS X Yosemite
132W - Idle Windows 8.1
430W - FurMark torture test in Windows (99% TDP)
Might be a little high since I have every PCIe slot and hard drive bay occupied.
So you can interpret my numbers as "worst case scenario"
Hello,
I had made a few changes to the equipment that I am going to purchase, a Mac Pro (4,1 firmware updated to 5.1 - 12 core 3.33Ghz), a 4k monitor Samsung U28D590D, so I am left with $500 for the graphics card, any recommendations for an Nvidia card that supports 4k and fits the $500 budget?. Thanks.
I had made a few changes to the equipment that I am going to purchase, a Mac Pro (4,1 firmware updated to 5.1 - 12 core 3.33Ghz), a 4k monitor Samsung U28D590D, so I am left with $500 for the graphics card, any recommendations for an Nvidia card that supports 4k and fits the $500 budget?. Thanks.
Welp, I was able to get Titan X to overdraw on power and shut itself off. Replaced the thermal paste with the excellent Gelid GC-Extreme, which I theorize removed the temperature as a limiting factor, so during a Witcher 3 session it tried to go past what the Mac Pro could provide on internal power because it had more headroom temp-wise than the factory paste would allow. Not necessarily a bad thing - I used Nvidia Inspector to set the target temperature on 82°C and it made it through the same scene without an issue.
I wouldn't dare use such a card without AUX power or the PSU mod. I want to keep my motherboard traces in good health.
Nvidia Inspector lets you throttle it based on things like temperature, voltage, watts, etc. (via GPUBoost)
I never used that. Can you tell it to limit the card to 200w for example? Does that mean a big performance hit?
Here it is:
http://www.guru3d.com/files-details/nvidia-inspector-download.html
90% power target on a Titan X would be 225W. I set it on that and 82˚C target temp. You could throttle it to 200W if you wanted (set to 80% power).
It does have a performance impact since it's throttling the card.
When power draw exceeds what the Mac can handle, does it shut off the entire Mac completely or just the video card?
The incident I describe, the Mac stayed on (the game was still running, too, could hear sound and everything still going), but I could not alt-tab or ctrl-alt-del - blank display until I forced a reboot. Wondering if the card did indeed overdraw power (or overheat? probably not likely) or if it's just a bug in the game.
The incident I describe, the Mac stayed on (the game was still running, too, could hear sound and everything still going), but I could not alt-tab or ctrl-alt-del - blank display until I forced a reboot. Wondering if the card did indeed overdraw power (or overheat? probably not likely) or if it's just a bug in the game.
There's a safety that shuts down the whole power supply if the power draw exceeds a certain limit (I've read somewhere that the limit is 10 amps on each of the PCIe cables, to be confirmed). Thanks to this safety measure we shouldn't worry about burning the motherboard traces. Your problem looks more like a game crash or GPU crash.
MVC,
Of curiosity, what is the link speed of the Titan-X 12GB video card? 2.5 or 5 GT/s? I currently own a flashed Titan 6GB (purchased from you) and it's running at 2.5 GT/s. It's stable, but I'm wondering if I should get the Titan-X card. I do a lot of video and photo editing. Kinda wish the speed was at 5 GT/s with my current Titan.
In the blog on our site we address this. 3 different ways to check that will confirm true speed.
Thanks MVC. Will get a Titan-X, but I have to sell my Titan card first to offset the high price of the Titan-X. Any buyers?
Interesting test result on Titan X...
Ran Valley benchmark, 1st time at 100% max power (250W) and second time at 90% max power (capped at 225W) on Windows 10, using Nvidia Inspector to throttle.
NO DIFFERENCE, same score.
So basically this card will hit its thermal limit before its power draw limit on a Mac Pro's internal power.
If anything the 8 pin connector seems to be there for overclockers who have a more elaborate cooling setup.
Ran Valley benchmark, 1st time at 100% max power (250W) and second time at 90% max power (capped at 225W) on Windows 10, using Nvidia Inspector to throttle.
NO DIFFERENCE, same score.
So basically this card will hit its thermal limit before its power draw limit on a Mac Pro's internal power.
If anything the 8 pin connector seems to be there for overclockers who have a more elaborate cooling setup.
Did you check the power draw if your card really pull 250W in total?
If it's always under 225W, your 90% limit virtually doing nothing, but an extra protection.
IMO, Valley benchmark is quite good to simulate real world usage, but not that power hunger. If you want to test power draw, the best is to run OCCT in full screen mode.
If your card hit the thermal limit, it's fan should run crazy fast to avoid overheat. The GPU run at 100% doesn't mean that the card is drawing 100% power. Valley benchmark may able to push the GPU to 100%, but not necessary power limiting.
If it's always under 225W, your 90% limit virtually doing nothing, but an extra protection.
IMO, Valley benchmark is quite good to simulate real world usage, but not that power hunger. If you want to test power draw, the best is to run OCCT in full screen mode.
If your card hit the thermal limit, it's fan should run crazy fast to avoid overheat. The GPU run at 100% doesn't mean that the card is drawing 100% power. Valley benchmark may able to push the GPU to 100%, but not necessary power limiting.