Which cards besides GTX680 can be user-reflashed for 5.0GT/S and PCIe 2 in OSX & Win?

grue

macrumors 65816
Original poster
Nov 14, 2003
1,233
37
Somewhere.
I haven't seen any sort of comprehensive list, so how about we make one?

I'm trying to do one more round of upgrades to avoid having to build a dedicated gaming PC, so my Mac Pro 4,1 2.26 is going to get a pair of X5570s and… some video card or another. I've been thinking the GTX680 is the best candidate because it doesn't require me to pay someone else to flash it, and will give full performance in both OSes… but are there other candidates I should be considering?
 
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EHuntington

macrumors newbie
Dec 23, 2013
16
0
Detroit
I flashed my Radeon 7950 using the script from Netkas.org. It's been running for a few months now without any hiccups. The prices on the 7950 and 7970 are probably still too high to be worth it, but they are viable options.
 

ActionableMango

macrumors G3
Sep 21, 2010
9,510
6,750
I believe the GTX680 is literally the only candidate that meets your requirements.

PC Nvidia cards do not have a large enough ROM chip to fit both Mac EFI and PC BIOS. For whatever reason, the GTX 680 is an exception. This is why you see ROMs floating around for the 680 and none of the other cards.

Many AMD cards can be flashed, but they require either adding or removing a resistor for 5.0GT/s. I suppose if you don't mind doing that, then you can consider many flashable AMD cards.
 

brosenz

macrumors regular
Apr 26, 2011
195
32
I believe the GTX680 is literally the only candidate that meets your requirements.

PC Nvidia cards do not have a large enough ROM chip to fit both Mac EFI and PC BIOS. For whatever reason, the GTX 680 is an exception. This is why you see ROMs floating around for the 680 and none of the other cards.

Many AMD cards can be flashed, but they require either adding or removing a resistor for 5.0GT/s. I suppose if you don't mind doing that, then you can consider many flashable AMD cards.
Is the EFI Mac ROM available fro the EVGA GTX 780 Ti somewhere as a DIY job?
 

grue

macrumors 65816
Original poster
Nov 14, 2003
1,233
37
Somewhere.
I believe the GTX680 is literally the only candidate that meets your requirements.

PC Nvidia cards do not have a large enough ROM chip to fit both Mac EFI and PC BIOS. For whatever reason, the GTX 680 is an exception. This is why you see ROMs floating around for the 680 and none of the other cards.

Many AMD cards can be flashed, but they require either adding or removing a resistor for 5.0GT/s. I suppose if you don't mind doing that, then you can consider many flashable AMD cards.
Ah, fair enough. Just gotta wait for the 680 prices to drop that little bit more, then…
 

Gav Mack

macrumors 68020
Jun 15, 2008
2,192
17
Sagittarius A*
Ah, fair enough. Just gotta wait for the 680 prices to drop that little bit more, then…
Used/refurb 680 PC reference cards can be picked up in the old mother country here for 200 quid. eBay.com.au will be the best place down under I reckon, but you'll need one or two PCIe power cables if you get a PC Card depending on whether your old card had one power lead or not. About £4 each over here.
 

ActionableMango

macrumors G3
Sep 21, 2010
9,510
6,750
Ah, fair enough. Just gotta wait for the 680 prices to drop that little bit more, then…
You might be in luck as they are recently starting to fall. Until recently, GTX 680 prices have been holding the line. Used examples are priced about the same as a brand new GTX 770, which is newer and faster. 4GB models actually went UP in value for almost a year!

I have no idea what was going on with that. I'm used to video card prices plunging. But yes, they do seem to be falling again.

Good luck! And don't buy a weird one, as the card might not be compatible with the reference ROM floating around. (To be fair, I don't think anyone has yet found a 680 that wouldn't flash, but it's good to be safe.)
 

Gav Mack

macrumors 68020
Jun 15, 2008
2,192
17
Sagittarius A*
You might be in luck as they are recently starting to fall. Until recently, GTX 680 prices have been holding the line. Used examples are priced about the same as a brand new GTX 770, which is newer and faster. 4GB models actually went UP in value for almost a year!

I have no idea what was going on with that. I'm used to video card prices plunging. But yes, they do seem to be falling again.

Good luck! And don't buy a weird one, as the card might not be compatible with the reference ROM floating around. (To be fair, I don't think anyone has yet found a 680 that wouldn't flash, but it's good to be safe.)
Or one that's so wide it takes out PCIe slot 2 out of use!
 

grue

macrumors 65816
Original poster
Nov 14, 2003
1,233
37
Somewhere.
You might be in luck as they are recently starting to fall. Until recently, GTX 680 prices have been holding the line. Used examples are priced about the same as a brand new GTX 770, which is newer and faster. 4GB models actually went UP in value for almost a year!

I have no idea what was going on with that. I'm used to video card prices plunging. But yes, they do seem to be falling again.

Good luck! And don't buy a weird one, as the card might not be compatible with the reference ROM floating around. (To be fair, I don't think anyone has yet found a 680 that wouldn't flash, but it's good to be safe.)
Ok, found an Inno3D GTX 680 with 2x6pin connectors and what appears to be a reference design, picking it up tomorrow afternoon.

Then my X5570s arrive on Monday, and I've got a machine that's usable for another 2-3 years :)
 

avkdm

macrumors regular
Feb 14, 2012
154
42
If you want to get technical, there are 2 older cards I have done as well as Gtx680. (reference Design). An 8800gt, you have to find one with a larger rom chip. Also I have flashed a 5770 as well, a bit more technical as you have to build your own rom. Why you would waste your time on these older cards is up to you. GTX680 is the go in my opinion, if you dont want Apple breaking things everytime theres an update to OSX.
 

vegaliu

macrumors newbie
Jan 10, 2012
7
0
I found a Inno3D GTX680 2GB on eBay, just wanna know that does that card can be used on my Mac pro 5.1 without flash the Rom? if it need to be flashed, is it easy to do it?
Cheers~
 

avkdm

macrumors regular
Feb 14, 2012
154
42
I found a Inno3D GTX680 2GB on eBay, just wanna know that does that card can be used on my Mac pro 5.1 without flash the Rom? if it need to be flashed, is it easy to do it?
Cheers~
If its reference design like this (single blower fan) it will work.
http://www.inno3d.com/products_detail.php?refid=70
It has 2x6 pin as well so should go straight in as long as you get the connector/adapter for your Mac.
Flashing is pretty easy if you are technically minded.
Best to see this thread and see if you are game.
https://forums.macrumors.com/thread...e-gtx-680-models.1578255/page-7#post-20932751
You do not need to flash it, however you will not see boot screen at startup, amongst other things- read the threads to find out.
 
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vegaliu

macrumors newbie
Jan 10, 2012
7
0
Thanks dude...
However if I don't flash it, is it the card still can get a high performance? like the OpenGL, CUDA supported etc...
 
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