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flowrider

macrumors 604
Nov 23, 2012
7,324
3,003
a few questions.....
- 1080Ti only works in Sierra? - Yes, Nvidia Web Drivers updated for Pascal cards only available for 10.12.4 & 10.12.5.
- Anybody know if the latest Sierra versions corrected the bug were the mouse pointer doesn't update properly on a 5K display? I had to rollback to El Capitano from 10.12.2 because of the problem. Don't know the answer?

See above.

Lou
 

normang

macrumors member
Mar 11, 2007
79
203
Maple Grove, MN
Will the latest drivers Nvidia Web Drives support most versions of the GTX 10XX series or only some of them under Sierra? Is there a compatibility listing anywhere?
 

flowrider

macrumors 604
Nov 23, 2012
7,324
3,003
^^^^AFAIK, all Pascal cards are supported. I have seen no evidence to contradict that statement..

Lou
 

normang

macrumors member
Mar 11, 2007
79
203
Maple Grove, MN
^^^^Yes to first question. No to second.

Lou
Thanks for the feedback, appreciate it.. one more question (maybe two or three), Since there are 10XX cards from MSI, Giagbyte, EVGA, ASUS, as well as Nvidia itself, perhaps others, does it make a difference which vendor of a 10XX card? Are there some that would not work in a Mac Pro?

The other question that pops into mind is, are the driver releases now universal? They support the Maxwell versions as well as the Pascal versions? Or do we have to look for the pascal version of the driver if you have 10xx card?

thanks for any other info..
 

flowrider

macrumors 604
Nov 23, 2012
7,324
3,003
^^^^First question - No as long as you can get the proper power to it. Some of the higher priced GTX 1080s are overclocked quite a bit and require more power as does the 1080ti and above. The 1080s with the single 8 pin connector work quite well on just power from the MB. I have a flashed 8 pin Gigabyte gaming card, because I really like the cooler.

Yes to the second.

Lou.
 
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Beckett5

macrumors newbie
May 3, 2012
8
3
Paris
Polaris driver for rx 480 and rx 580 are now included in High Sierra. No more Kext mod necessary. Works pretty well and valley benchmark scores 2605 Faster than my D700 on MP 2013 which scores 2351
 

iCreate

macrumors member
Sep 2, 2002
99
11
Near Insanity
Polaris driver for rx 480 and rx 580 are now included in High Sierra. No more Kext mod necessary. Works pretty well and valley benchmark scores 2605 Faster than my D700 on MP 2013 which scores 2351
I would have liked to get an RX580 for no other reason than AMD GPUS being used in Macs, I figured macOS, APIs, and Apple's own apps are better tuned for it, but decided on a 1080Ti for CUDA and Adobe CC. Now the RX580 is scarce.
 

SolidCake

macrumors regular
Original poster
May 20, 2016
109
41
Guys, update coming soon! Sorry, I got caught up but the good news is is that it's running great with latest Nvidia web drivers and the external PSU.
 

Mufasa804

macrumors regular
Mar 6, 2009
232
78
Guys, update coming soon! Sorry, I got caught up but the good news is is that it's running great with latest Nvidia web drivers and the external PSU.

This is awesome! I am planning on installing one single 1080 in my Mac Pro 5,1. Sorry if this has been answered already, but what power cables should I buy? I am in the U.S.
 

Blackey Cole

macrumors member
Mar 5, 2017
38
4
I bought a 1080 founders ed 8gb that was mac chipped profession job I got it off eBay and had questions before install the seal were replaced so I thought I had received a factory card that slid through the system but they were the one that added the seals I were seeing. I uses one 8-6 cable I believe that they sent with the card. Wasn't cheap you get the apple boot screen per there ad just like a factory mac card. I haven't installed it yet as I have new drives to replaced the 2tb wd red hdds that the system came with I plan on the main two jobs will be my flight sim machine running x-plane 11 sand lightroom/photoshop workhorse. I'll browse the web and use it for iTunes etc but those are the two main uses for the setup. I replacing one of the 2tb hdds with ab1tb ssd drive the rest will be replaced by 4tb wd reds I got a deal on 6 drives, enough for this machine and both my synology NAS's that will give them 2 4tb wd reds each since one has 1, I'm not totally sure of the other.ill take the 4 2tb and redo my buffalo NAS with them the netgear nas will get the best of what's left.
 

JulianBoolean

macrumors regular
Aug 14, 2010
142
5
Hi Guys,

Mac Store UK has a little blurb on their website that explains two options for internally powering the 1080ti on a cMP.

Quote: " The GTX 1080Ti, Titan X (Pascal) & Titan Xp all require this different setup. The 2 aux power connectors on the logic board will power the 8 pin connector in the mentioned graphics cards. The setup is – 2 x mini 6 pin to 6 pin cables plugged in to a dual 6 pin to 8 pin connector. The 6 pin connector on the graphics card is then powered from a SATA power connector. If you have a spare HDD bay in your Mac the easiest way is to simply plug in a 6 pin to SATA power cable in to your spare SATA HDD socket. If you either don’t have the free HDD bay or would like a neater solution you can draw the 6 pin power from the SATA connector in the second optical bay. This again is straightforward but does take some patience getting the extension cable in the gap between the main compartment and the optical bay." -- Mac Store UK
https://www.macstoreuk.com/faqs/nvidia-gtx-1080ti-titan-x-pascal-titan-xp-power-setup/

[..]

Pulling power from the lower optical bay would be my preference, versus external PSU or sacrificing a hard drive bay. Question: Anybody here tried this?
 

iCreate

macrumors member
Sep 2, 2002
99
11
Near Insanity
Hey guys, I'm thinking about switching out my dual RX 480's for a single GTX 1080 Ti. The lack of Apple support on AMD's front (vice versa) and the newly acquainted support from Nvidia is making me seriously consider a switch.

I was wondering if anybody has a 1080 Ti running in their Mac Pro? How is performance? And how did you manage the power requirements? Do you need to flash the card or can you use Nvidia's latest web driver for macOs?

Cheers!
[doublepost=1505573103][/doublepost]I have a 1080Ti using this same dual six pin to 8 pin setup. But I pull the SATA power from the hard drive bay instead since I use PCIe SSDs.
 

itdk92

macrumors 6502a
Nov 14, 2016
504
180
Copenhagen, Denmark
Hi Guys,

Mac Store UK has a little blurb on their website that explains two options for internally powering the 1080ti on a cMP.

Quote: " The GTX 1080Ti, Titan X (Pascal) & Titan Xp all require this different setup. The 2 aux power connectors on the logic board will power the 8 pin connector in the mentioned graphics cards. The setup is – 2 x mini 6 pin to 6 pin cables plugged in to a dual 6 pin to 8 pin connector. The 6 pin connector on the graphics card is then powered from a SATA power connector. If you have a spare HDD bay in your Mac the easiest way is to simply plug in a 6 pin to SATA power cable in to your spare SATA HDD socket. If you either don’t have the free HDD bay or would like a neater solution you can draw the 6 pin power from the SATA connector in the second optical bay. This again is straightforward but does take some patience getting the extension cable in the gap between the main compartment and the optical bay." -- Mac Store UK
https://www.macstoreuk.com/faqs/nvidia-gtx-1080ti-titan-x-pascal-titan-xp-power-setup/

[..]

Pulling power from the lower optical bay would be my preference, versus external PSU or sacrificing a hard drive bay. Question: Anybody here tried this?


Definitely not a recommended setup in the long run but fine for testing and in most cases (in which the user actually uses the GPU only slightly).
 

JulianBoolean

macrumors regular
Aug 14, 2010
142
5
[doublepost=1505576030][/doublepost]
Definitely not a recommended setup in the long run but fine for testing and in most cases (in which the user actually uses the GPU only slightly).

Happy to defer to your expertise here, curious about the following:

Q1: What is the issue that makes pulling power from the lower optical bay not ideal for heavy workloads or long term use?

Q2: Are you a saying that a hard drive bay a better power source, or that an external PSU is better than either internal options?

Thanks!
 
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Dr. Stealth

macrumors 6502a
Sep 14, 2004
814
740
SoCal-Surf City USA
I'm running (2) factory overclocked EVGA GTX 1080 TI FTW3's (PN 11G-P4-6696-KR) with no issues using a 450w auxiliary psu in the lower optical bay. The 1080 TI's are dual 8-pin each with a TDP of 280w each.

Sierra 10.12.6 & Nvidia Web Driver 378.05.05.25f01 (No Issues)

Windows 10 Pro 1703 & Nvidia Driver 22.21.13.8541 (No Issues)


11G-P4-6696-KR_LG_1.jpg
 
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PowerMike G5

macrumors 6502a
Oct 22, 2005
556
245
New York, NY
I'm running (2) overclocked EVGA GTX 1080 TI FTW3's (PN 11G-P4-6696-KR) with no issues using a 450w auxiliary psu in the lower optical bay. The 1080 TI's are dual 8-pin each with a TDP of 280w each.

Sierra 10.12.6 & Nvidia Web Driver 378.05.05.25f01

Windows 10 Pro 1703 & Nvidia Driver 22.21.13.8541


View attachment 718319

Can you tell me what brand/model of PSU you are using in the lower optical bay? I'd like to look into this as an option. Thanks.
 

Dr. Stealth

macrumors 6502a
Sep 14, 2004
814
740
SoCal-Surf City USA
Can you tell me what brand/model of PSU you are using in the lower optical bay? I'd like to look into this as an option. Thanks.


I'm running the FSP Booster X5. I put it in about 4 years ago. This type of PSU is pretty difficult to find these days. I saw one last week (VisionTec brand) on Amazon and scooped it up as a backup in case I ever have a problem with mine.

Another good option is to use an Xbox PSU (easy to find). See Prince123's post here.

https://forums.macrumors.com/threads/ultimate-mac-pro-5-1-mod-for-triple-titan-x.2043646/

500-Watt-Power-Supply-FSP-Booster-X5-350x350.gif


IMG_4571.png
 
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mattspace

macrumors 68040
Jun 5, 2013
3,346
2,976
Australia
forgive my ignorance, but do these secondary power supplies mean a second power cable leaving the mac to the wall, and do you nave a second power switch, or are they wired into the existing power supply?
 

heero503

macrumors member
Nov 12, 2014
75
18
Hong Kong
Used few month with bay 3 n 4 sata to 6 pin and dual 6 to 8 to drive Ti no matter mac or win 10 is work fine. Asus 1080Ti FE
 

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