How to flash GTX 970 with EFI BIOS?

Zaithe

macrumors member
Original poster
Jun 27, 2016
72
10
I want to flash my card manually so i don't have to send it in to MACVIDCARDS.COM. Anybody familiar with the process able to guide me in the right direction?
 

Zaithe

macrumors member
Original poster
Jun 27, 2016
72
10
Either pay for it, or make the EFI ROM by yourself. AFAIK, there is no 3rd option apart from stealing.
Thank you for your info. How easy is it to make your own rom? As easy as grabbing a 680 rom and modifying the configuration?
 

h9826790

macrumors G5
Apr 3, 2014
13,975
6,592
Hong Kong
Thank you for your info. How easy is it to make your own rom? As easy as grabbing a 680 rom and modifying the configuration?
I have absolutely no idea how can produce a Mac EFI ROM for Nvidia card. If you can figure that out, and willing to teach us for free, please remember to come back.
 

goMac

macrumors 604
Apr 15, 2004
7,077
1,096
I have absolutely no idea how can produce a Mac EFI ROM for Nvidia card. If you can figure that out, and willing to teach us for free, please remember to come back.
You just open up the code and type in the code to run the 970. No big deal.
 
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frou

macrumors 6502a
Mar 14, 2009
752
832
1) Sell GTX970
2) Buy GTX680
3) Flash GTX680 using instructions on this forum
I bought two GTX680s, flashed both, kept one, sold the other.

It sold for ~double the unflashed cost so I effectively got mine for free :D </smug>
 
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Zaithe

macrumors member
Original poster
Jun 27, 2016
72
10
With a GTX 970 will the card be handicapped in OSX in regards to performance with the web driver installed? I could deal with no bootscreen if i had to. If so i guess i will have to take it in to get flashed or else i run the risk of bricking it. I'm a programmer but not a ROM engineer. Seems like i shouldn't even waste my time trying from what your saying. Does anybody own a flashed 970 which they could download the rom using software like nvflash?
 

pat500000

Suspended
Jun 3, 2015
8,523
7,511
I want to flash my card manually so i don't have to send it in to MACVIDCARDS.COM. Anybody familiar with the process able to guide me in the right direction?
Hi. Welcome to MR site and the solution to your problem..sell your current Mac Pro and run for your life.
 

h9826790

macrumors G5
Apr 3, 2014
13,975
6,592
Hong Kong
With a GTX 970 will the card be handicapped in OSX in regards to performance with the web driver installed? I could deal with no bootscreen if i had to. If so i guess i will have to take it in to get flashed or else i run the risk of bricking it. I'm a programmer but not a ROM engineer. Seems like i shouldn't even waste my time trying from what your saying. Does anybody own a flashed 970 which they could download the rom using software like nvflash?
AFAIK, in OSX, there is no performance difference between flashed or non flashed card once the web driver installed.
 

Zaithe

macrumors member
Original poster
Jun 27, 2016
72
10
Hi. Welcome to MR site and the solution to your problem..sell your current Mac Pro and run for your life.
I would if i could but i work from home and the industry i work in require me to use apple products. I got a good setup though. mid 2012 12 core 3.46ghz mac with 64GB 1333mhz ECC Registerd memory. 1TB Sata3 Raid, 1TB M.2 Raid and a 6TB Raid 1. Should outperform the top grade 2013 model in most areas.

AFAIK, in OSX, there is no performance difference between flashed or non flashed card once the web driver installed.
Quoted from the macvideocards website:http://www.macvidcards.com/what-are-the-benefits-of-buying-a-flashed-card.html
  1. When installed in a Mac Pro a stock PC GPU will only be able to utilize the outdated PCIe 1.0 format. A card flashed with a Mac BIOS will be able to work at PCIe 2.0 speeds, supporting twice the data rate.
But maybe they are saying that would be the case if you didn't install the web driver?
 

h9826790

macrumors G5
Apr 3, 2014
13,975
6,592
Hong Kong
I would if i could but i work from home and the industry i work in require me to use apple products. I got a good setup though. mid 2012 12 core 3.46ghz mac with 64GB 1333mhz ECC Registerd memory. 1TB Sata3 Raid, 1TB M.2 Raid and a 6TB Raid 1. Should outperform the top grade 2013 model in most areas.


Quoted from the macvideocards website:http://www.macvidcards.com/what-are-the-benefits-of-buying-a-flashed-card.html
  1. When installed in a Mac Pro a stock PC GPU will only be able to utilize the outdated PCIe 1.0 format. A card flashed with a Mac BIOS will be able to work at PCIe 2.0 speeds, supporting twice the data rate.
But maybe they are saying that would be the case if you didn't install the web driver?
That's only true in Windows now, but not with the current web driver in OSX.
 

Zaithe

macrumors member
Original poster
Jun 27, 2016
72
10
That's only true in Windows now, but not with the current web driver in OSX.
So your saying if i use bootcamp and install the latest driver for the card in windows it won't properly utilize it?
 

rawweb

macrumors 6502a
Aug 7, 2015
907
628
So your saying if i use bootcamp and install the latest driver for the card in windows it won't properly utilize it?
Yep.

PCIe 2 - OSX
PCIe 1 - Bootcamp/Windows

If boot screens and rev 2 speeds in win are important to you, only option is to send it in for flashing. If you think you can survive without seeing a silly boot screen (Apple logo, or option/boot menu), please remember that nvidia web driver is locked to OS build, so until you see a driver update hold off on updating OSX. So many threads on this here, please read around and search...education is power.
 

Zaithe

macrumors member
Original poster
Jun 27, 2016
72
10
Yep.

PCIe 2 - OSX
PCIe 1 - Bootcamp/Windows

If boot screens and rev 2 speeds in win are important to you, only option is to send it in for flashing. If you think you can survive without seeing a silly boot screen (Apple logo, or option/boot menu), please remember that nvidia web driver is locked to OS build, so until you see a driver update hold off on updating OSX. So many threads on this here, please read around and search...education is power.
Looks like i'm going to have to do it then i guess. I also want the rig to be gaming ready on windows. What if i use a VM and interface it directly with my video card within OSX?
 

frou

macrumors 6502a
Mar 14, 2009
752
832
Looks like i'm going to have to do it then i guess. I also want the rig to be gaming ready on windows. What if i use a VM and interface it directly with my video card within OSX?
That could be more of a perf hit than just using it natively with PCIe 1

The thing to remember about graphics cards and PCIe is that the cards have a good amount of onboard RAM that essentially acts as a fast cache. They're not going over the PCIe bus for everything they do, and so there being a bit less bandwidth isn't necessarily a showstopper.

Of course, as an enthusiast, I understand the appeal of having hardware firing on all cylinders.
 
Last edited:

Zaithe

macrumors member
Original poster
Jun 27, 2016
72
10
That could be more of a perf hit than just using it natively with PCIe 1

The thing to remember about graphics cards and PCIe is that the cards have a good amount of onboard RAM that essentially acts as a fast cache. They're not going over the PCIe bus for everything they do, and so there being a bit less bandwidth isn't necessarily a showstopper.
idk the games i play currently max out this card on a windows pc so I think i'll just bite the bullet and pay to have it flashed. Maybe after it's flashed i'll download the rom and peak inside. Thank you everyone for your help. Feel free to chime in if you have anymore input.
 

nigelbb

macrumors 65816
Dec 22, 2012
1,031
199
The performance of the GTX970 is little different to the GTX680. Save your money sell the GTX970 buy a GTX680 & flash it yourself
 

Zaithe

macrumors member
Original poster
Jun 27, 2016
72
10
The performance of the GTX970 is little different to the GTX680. Save your money sell the GTX970 buy a GTX680 & flash it yourself
I would rather sell it and get a titan than take a step back. I will probably flash this and later buy a titan z when they get a little older and give this card to my wife.
 

GMB80

macrumors newbie
Nov 7, 2018
1
0
The performance of the GTX970 is little different to the GTX680. Save your money sell the GTX970 buy a GTX680 & flash it yourself
Little difference he says..
40% faster/ more fps is a big difference too me.
 
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