Confirmed and Possible Flashable GTX 680 Models

[drifter7508]

It's not supposed to have a 10-second delay especially when using the EVGA reference card. Where did you get the Mac ROM? if I were you, I'd download from here and reflash it again.

Thats the rom I used.

 

[drifter7508]

A PRAM reset did the trick. Now my Mac Boots in 10 sec's instead with the SSD! =D Very happy! No more black screen delays!

 

[drifter7508]

Still have bad issues with the PCI fan and PS fan. Running at around 1850 rpm!

They are normal at startup. Any use of my other HD's makes them go crazy.

Using a Open GL app do not work to calm them down.

Is there any app to force the fans to stay in set RPM's?

 

[GP-SE]

download and install OpenGL Extension Viewer from the mac app store, run the benchmark, that will stress the card and cause the PCI-E and PSU fan to return to normal. Also make sure the card is installed in Slot 1, sometimes Slot 2 even with the stress test won't lower the fans

 

[JohnyClassic]

Zotac GTX 680 likes mac flash!

I'm happy to report my ZOTAC ZT-60101-10P was flashed with no problems. Everything seems to be working great both in Windows 8.1 and OS X and i'm getting the proper boot/efi grey screen.

 

[knowhate]

.

 

[drifter7508]

download and install OpenGL Extension Viewer from the mac app store, run the benchmark, that will stress the card and cause the PCI-E and PSU fan to return to normal. Also make sure the card is installed in Slot 1, sometimes Slot 2 even with the stress test won't lower the fans

Yes, I know. Had the card in slot 1 at first.
Changed to slot 2 to get rid of the fans boosting up at start up. Worked... but now they go crazy during any small activity
mainly torrents and will not come down in rpm no matter what. Will change back to slot 1. At least the Open GL app seemed to work there.

 

[0x2102]

I am using "Macs Fan Control". You can set each fan to auto/constant rpm or temperature based. Then just add it to your "Login Items" under System Preference/Users & Groups.

 

[drifter7508]

I am using "Macs Fan Control". You can set each fan to auto/constant rpm or temperature based. Then just add it to your "Login Items" under System Preference/Users & Groups.

Thx for that one Seems great.

Changed back my card to slot one.
Works much better. The open gl test fix the fans.
After that it all runs fine at original 800 rpm.

Will have a look at the Fan control app too

 

[Macabee2157]

I also confirm about this video card: EVGA GeForce GTX 680 SC Signature 2(P/N: 02G-P4-2687-KR). Flashed and running successfully!

I had a question. The gtx 680 signature 2 has a power consumption higher then what the Mac Pro can provide. Once you flash the card for mac will power consumption automatically be that of the gtx 680 mac edition? How does the mac firmware control the two fans?

 

[ActionableMango]

I had a question. The gtx 680 signature 2 has a power consumption higher then what the Mac Pro can provide. Once you flash the card for mac will power consumption automatically be that of the gtx 680 mac edition? How does the mac firmware control the two fans?

No, it does not have power consumption higher than what the Mac Pro can provide.

Once you flash the card, the clock and voltage settings will be identical to the GTX 680 Mac Edition (which is same as reference). You can of course, edit them right back to Signature 2 specifications.

I have no idea about the fans. I would worry a little bit about flashing such a non-reference configuration. Has someone confirmed this model earlier in the thread?

 

[Macabee2157]

No, it does not have power consumption higher than what the Mac Pro can provide.

Once you flash the card, the clock and voltage settings will be identical to the GTX 680 Mac Edition (which is same as reference). You can of course, edit them right back to Signature 2 specifications.

I have no idea about the fans. I would worry a little bit about flashing such a non-reference configuration. Has someone confirmed this model earlier in the thread?

Yes. The person with the quote above my question said he did. And at the beginning of this forum, the 680 signature 2 was listed as confirmed successfully flashed and working. It didn't say anything specific so I was inquiring about it.

 

[ActionableMango]

Yes. The person with the quote above my question said he did. And at the beginning of this forum, the 680 signature 2 was listed as confirmed successfully flashed and working. It didn't say anything specific so I was inquiring about it.

You should be good to go then. Make sure you back up the original ROM. After you flash the new ROM in, you can manually change the clock and voltage settings back to Signature 2 specs after you've flashed in the Mac ROM.

 

[Macabee2157]

You should be good to go then. Make sure you back up the original ROM. After you flash the new ROM in, you can manually change the clock and voltage settings back to Signature 2 specs after you've flashed in the Mac ROM.

Yeah. Assuming that signature 2 settings do not go above 225W TDP. Is there a way to get voltage and current readings on the card to calculate the wattage?

 

[ActionableMango]

Yeah. Assuming that signature 2 settings do not go above 225W TDP.

No assumption required. We've been over this topic and beaten it to a pulp in other threads, including actual measurements from beyond-real-world-use scenarios. Well, okay, this exact card hasn't been measured as far as I know, but cards that demand much more power have.

Is there a way to get voltage and current readings on the card to calculate the wattage?

No need. You can get the actual wattage as reported by the MP's internal power sensors by using the following software.

http://www.bresink.com/osx/HardwareMonitor.html

 

[Macabee2157]

No assumption required. We've been over this topic and beaten it to a pulp in other threads, including actual measurements from beyond-real-world-use scenarios. Well, okay, this exact card hasn't been measured as far as I know, but cards that demand much more power have.



No need. You can get the actual wattage as reported by the MP's internal power sensors by using the following software.

http://www.bresink.com/osx/HardwareMonitor.html

Thanks. I like this forum!

 

[Gav Mack]

This gainward gtx 680

http://www.gainward.com/main/vgapro.php?id=867&lang=en

£230 for a warranty replacement card with 30 day warranty on eBay, 2 clients have bought/flashed with no problems reported. Should have posted this over a month ago but forgot!

http://www.ebay.co.uk/itm/321311180057?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

 

[getrom]

This card is working stable on MacPro 5.1
PNY GEFORCE® GTX 680 4GB (VCGGTX6804XPB)

 

[Macabee2157]

No assumption required. We've been over this topic and beaten it to a pulp in other threads, including actual measurements from beyond-real-world-use scenarios. Well, okay, this exact card hasn't been measured as far as I know, but cards that demand much more power have.



No need. You can get the actual wattage as reported by the MP's internal power sensors by using the following software.

http://www.bresink.com/osx/HardwareMonitor.html

When I first start the mac up with the new gtx 680 in it just blinks my room light and then a click and then nothing. I'm using a 6-8 pin adapter.

 

[ActionableMango]

When I first start the mac up with the new gtx 680 in it just blinks my room light and then a click and then nothing. I'm using a 6-8 pin adapter.

I don't use an adapter.

What model?

 

[Macabee2157]

I don't use an adapter.

What model?

SC signature 2

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I don't use an adapter.

What model?

One of the ones on the list of cards said to have been flashed successfully. The same card we were talking about a couple days ago.

 

[ActionableMango]

SC signature 2

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One of the ones on the list of cards said to have been flashed successfully. The same card we were talking about a couple days ago.

Oh right, I remember now.

You should have two 6-pin cables hooked up from the PCIe power sockets on the motherboard to the video card. One plugs into the 6-pin power and the other plugs into the 8-pin power. The 8-pin socket is designed to accept a 6-pin cable. Don't use a 6-to-8 adapter. They are not needed for GTX 680 and Macvidcards says some of the adapters are not assembled correctly or something. Don't use an adapter from SATA power either.

I just looked up the TDP on the SC2 and it's 185W, which is way lower than some of the other cards people are successfully using. I don't know what the problem is, I can only guess that it is either your adapter or your card is DOA.

 

[Macabee2157]

Oh right, I remember now.

You should have two 6-pin cables hooked up from the PCIe power sockets on the motherboard to the video card. One plugs into the 6-pin power and the other plugs into the 8-pin power. The 8-pin socket is designed to accept a 6-pin cable. Don't use a 6-to-8 adapter. They are not needed for GTX 680 and Macvidcards says some of the adapters are not assembled correctly or something. Don't use an adapter from SATA power either.

I just looked up the TDP on the SC2 and it's 185W, which is way lower than some of the other cards people are successfully using. I don't know what the problem is, I can only guess that it is either your adapter or your card is DOA.

You are so right! Thank you. Are you the administrator bc you are very helpful. The 6-8 pin cable I was using was indeed not wired correctly. So I just used a standard 6 pin cable that came with my mac and it powers right up. So in terms of using the 6 pin cable long term I just need to not exceed 75W and I'm good?

 

[Macabee2157]

You are so right! Thank you. Are you the administrator bc you are very helpful. The 6-8 pin cable I was using was indeed not wired correctly. So I just used a standard 6 pin cable that came with my mac and it powers right up. So in terms of using the 6 pin cable long term I just need to not exceed 75W and I'm good?

So flashed the card and apple with spin wheel loads up, amazingly btw. But then the screen freezes at apple and spin wheel or windows and spinny thing. Has anyone else had this issue?

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Oh right, I remember now.

You should have two 6-pin cables hooked up from the PCIe power sockets on the motherboard to the video card. One plugs into the 6-pin power and the other plugs into the 8-pin power. The 8-pin socket is designed to accept a 6-pin cable. Don't use a 6-to-8 adapter. They are not needed for GTX 680 and Macvidcards says some of the adapters are not assembled correctly or something. Don't use an adapter from SATA power either.

I just looked up the TDP on the SC2 and it's 185W, which is way lower than some of the other cards people are successfully using. I don't know what the problem is, I can only guess that it is either your adapter or your card is DOA.

And also one of the two DVI doesn't appear to be working after the flash either.

 

[ActionableMango]

But then the screen freezes at apple and spin wheel or windows and spinny thing.

I don't really understand what you mean. Can you boot into any operating system? Can you boot up a Windows install DVD?

Which exact ROM did you flash in? I hope you got the right one.