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So, my understanding is for both Maxwell and Pascal card. They belongs to case 1.
I won't pretend that i know anything about EFI or Apple's implementation of it, but i will assume that EFI initialization of the card (and screen display) is similar to Windows/BIOS implementation where you get Basic Microsoft Driver on the first boot with GPU. Is it software or hardware display mode or anything more than that, i really don't know.
 
I use Capture One Pro 10.1, which is very OpenCL and multi CPU friendly. I'm curious if the GTX 1080 would provide a significant boost, if any at all over the AMD Sapphire HD 7950.

I can't answer your GPU question, but if your software really does benefit from the CPU and is multicore friendly, you might consider upgrading to faster CPU with more cores. And it won't cost anywhere near what a 1080 does.

(Or consider doing both CPU and GPU.)
 
I just got my GTX 1080 back from MVC. I got it installed and it's working good so far! Boot screen comes up. :)

I got the EVGA Hybrid. It's the reference/founders edition PCB version. Model 08G-P4-6188-KR. It fits great in the cMP. I put a little felt strip on the under side of the radiator so it doesn't scratch the case or vibrate.

IMG_5177-1r.jpg
IMG_5257r.jpg
 
I just got my GTX 1080 back from MVC. I got it installed and it's working good so far! Boot screen comes up. :)

I got the EVGA Hybrid. It's the reference/founders edition PCB version. Model 08G-P4-6188-KR. It fits great in the cMP. I put a little felt strip on the under side of the radiator so it doesn't scratch the case or vibrate.

View attachment 701237 View attachment 701238
Does he sell 1080 flashed?
 
Here's a couple of benchmarks I did. LuxMark and Unigine Superposition at 1080P Medium. The superposition score is pretty far down the list, but it's not bad considering it's trailing right behind a PC with a Skylake CPU and DDR4 RAM. It didn't go above 50 degrees during the benchmark. :)

LuxMark benchmark 1.jpeg Unigine 1080P Medium.jpeg Untitled.jpeg
 
One issue I'm having with the Hybrid is that the radiator fan is quite loud. EVGA shows that it operates at 34.2 dB according to this FAQ post. So I've ordered a be quiet! SilentWings 3 120mm (BL064) that is suppose to operate at 16.4 dB. Hopefully that works out well. :)

Update: The SilentWings 3 fan is a nice addition. It's much quieter than the original fan. One issue though is that it will not run off the connector on the card. The card connector is outputting about 9V and the SilentWings 3 specs say it should run at 5v, so I'm not sure what the issue is. I'm running it off SATA power from one of the internal hard drive bays.
 
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My flashed GTX 1080 doesn't always show the boot screen. In fact, it's only some of the time. Does anyone else experience this with a flashed card? I often have to turn the computer off and cut power to it (SMC reset I suppose) and turn it back on to get a boot screen. I reset PRAM and the boot screen came up and MacOS loaded using the default driver so that's nice. Then after I selected the web driver and rebooted, no boot screen. Oh well. If it's working part of the time that's good enough I guess.
 
^^^^My MVC flashed GTX 1080 always shows a boot screen. Are you on Sierra 10.12.5?

Lou
 
I recently bought a Gigabyte Windforce 3 fan GTX 1080. The model I bought was the G1 Gaming card. I'm not a gamer. The primary reason I bought this card was it was the fastest GTX 1080 card that Gigabyte sells that has only one 8 pin power connector. I was running a GTX 780 (also MVC flashed) with two 8 connectors. Two of the pins were shorted on each connector so I could run with the stock double six pin connectors. I wanted to reduce my TDP. The 8GB of memory was an added bonus.

I bought my card from Amazon and had it shipped directly to MVC. He kept it for awhile, until the final flash was completed, and I received it yesterday. I am very pleased with the card, it is fast, and quiet and, of course, having the boot screen is a big bonus IMHO.

Screen redraws while fast before, are now lighting fast. My UPS has a display and my total watts for all devices plugged into it are now between 30 and 50 watts less than they were before.

The only difference with this card, vs my previous 2 MVC cards (a GTX 570 and the GTX 780) is that during boot there is a 2 to 3 second period of black screen. It starts about ½ way through the process and the screen return to life about ¾ way through. Boot Picker is still available so, it's really no problem for me, but something I should mention. It's the result of the transition between EFI and the OS.

This card also has a Fan Stop feature, where the fans stop spinning when not needed. There is a visual readout and I can view it through the cheese grater ventilation screen.

Results of the tests I have run are attached. The first the GTX 780, the Second the GTX 1080.

Needless to say I'm am extremely pleased with everything.

View attachment 697486 View attachment 697487 View attachment 697472 View attachment 697473 View attachment 697474 View attachment 697475 View attachment 697482 View attachment 697483 View attachment 697484 View attachment 697485

Lou

Can i ask which Mac Pro you have? I have a 4,1 (2009) with a ATI Radeon 5870 and am looking to buy a GTX 1070 or 1080 from MacVid Cards also. Is using the Y-Connectors a must or can i use whats currently stock in my MP?
 
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^^^^A much modified 2010 5,1. You'll need to use a "Y" connector AND your original (2) cables, if you get one, like I did, with one 8 pin connector.

Lou
 
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Sounds good and benchmarks are all well and good but how does it actually perform in Mac OS? not windows.

Lightroom, premier, after effects etc does it perform as it should or are the drivers still so bad that there is no benefit over the ATI 5880?

Ive been reading so much trying to find out before I spend the money but im not seeing the performance gains that justify spending £715 (here in the UK) for the 1080 the 1080TI is £858!!!.

Most of the things I have read show reduced performance in creative apps but the benchmarks are impressive, why is there no transition to the apps?. I payed £1000 for my hex 2010 mac pro thats maxed out. Seems a lot to spend, nearly the same cost as the machine without much gain with current drivers or have they been updated?

Is the PCI2 not a bottleneck for these high end cards?
 
Ive been reading so much trying to find out before I spend the money but im not seeing the performance gains that justify spending £715 (here in the UK) for the 1080 the 1080TI is £858!!!.
Look, I'd skip the MVC flashed cards and just buy one off the shelf. Flashing really doesn't get you much at all these days. And this will be even more the case once High Sierra is released.

You can get a 1080 for £461 or a 1080 Founders Edition for £549. What is hard to justify is the flashing not the card itself IMO. 1080 requires a single 8-pin connector which makes it easy to power with little fuss. As a side note, the FE cards are inaudible in both my Mac Pros at idle.

MSI GeForce GTX 1080 AERO 8G OC. 2560 Cuda Core PCIE 3.0 8 GB GDDR5X 256-Bit Graphics Card - Black

EVGA NVIDIA Geforce GTX 1080 Founders Edition GDDR5X Graphics Card (HDMI 2.0, DVI-I, 3 x DisplayPort 1.4, PCI-Express 3.0)
[doublepost=1497367987][/doublepost]
Is the PCI2 not a bottleneck for these high end cards?
No at all. The CPU is somewhat however depending on use case.
 
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Look, I'd skip the MVC flashed cards and just buy one off the shelf. Flashing really doesn't get you much at all these days. And this will be even more the case once High Sierra is released.

You can get a 1080 for £461 or a 1080 Founders Edition for £549. What is hard to justify is the flashing not the card itself IMO.
Unless you use FileVault there is no regular need for a boot screen. Keep a GT120 or similar on the shelf so that if you encounter a problem down the line that does require a boot screen for troubleshooting.
 
Ok., I'm not too worried about boot screens.

But my main worry is whether it increase performance. Does anyone have any experience with using the card compared to say an ATI variant? One thing I have read is that the Nvidia cards seem to perform worse because of the open CL and GL optimisation? Buy a RX 480 or 580 may perform better and be cheaper for creative apps rather than gaming?

Specifically lightroom, premier, after effects and FCPx.

This doesn't look too legit and these drivers were released in April

 
Unless you use FileVault there is no regular need for a boot screen.
This is no longer the case in High Sierra. Assuming things remain as they are in the Beta once we hit RTM then FileVault can now be used with unflashed cards.
See here:#22
 
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