I recently purchased a 2nd GTX-680 FTW+ 4GB card. I noticed in AIDA64 that the BIOS versions are different, and when I run EVGA OC Scanner X, the max clocks are slightly different, although maybe that's the boost clock kicking in on one card but not the other? I am running them stock - have not attempted to overclock either card.
 
One BIOS version is 80.04.47.00.80 and the other is 80.04.47.00.82
 
Although it doesn't appear to impact performance, should the older one be flashed to the new BIOS, and if so, where to I get the BIOS from? I have done it once before on some 480 Hydros, but EVGA had to email the BIOS to me personally.
 
Running under NVidia 314.22 drivers. Motherboard is ASUS Rampage IV Formula. CPU i7-3930k.

 

My 580GTX's in SLI do not share the same BIOS version to all digits, despite both of them being flashed with the fan unlocker for that version of 580's.  My assumption is that the last couple digits are picked up by the OS to differentiate between the cards:
 

 
As far as clocks go, I don't think flashing/reflashing them will make a difference.  The drivers will properly kick the cards up whenever needed on each GPU.

If you need the UEFI BIOS for the 680, please email support through support@evga.com or just call them at (888) 881-EVGA (3842).  Phone support is available 24/7, so they should be able to set you up quickly with the firmware to flash.

Nereus

 
Thanks for the responses. Nordic as you said, it should not make a difference. I'll post the support response for others who have this same question:

Hello,

It is perfectly normal to have 2 identical cards that will have slightly different max clock speeds if they are above the advertised boost clock. This is the nature of Nvidia's Dynamic Clock speeds on the GTX 600 series cards. The core clock will adjust to what is needed based on the situation/game/software.

The reason that both of your cards have a different bios may be due to production changes in the factory. Such as different memory chips and such. It is not recommended to flash a bios to match your other card unless a bios/firmware has been released to the general public on our forums.

If you have any concerns or further questions please contact Tech Support 24/7 888-881-3842.

  Thanks EVGA.

 
The 80.04.47.00.82 bios will boost the clocks one step behind the 80.04.47.00.80 bios.
 
But this may not matter if the card that has the 80.04.47.00.82 bios on it has the better chip that boost farther on it's own as so many cards do in the 600 series.
 
But if you were to take two FTW cards that did not boost any higher or lower than stock clocks the 80.04.47.00.82 would get you to 1150mhz and the 80.04.47.00.80 would get you to 1163mhz.
 
I learned this when I had multiple FTW cards and a program that let you read the boost tables.

mrkwhlr2

save both bios's

flash the latest bios to the other card using nvflash....problem solved.

now you have two cards running identical.

If the cards did have a hardware level change (like memory chips) this would be an extremely poor idea as it could brick the card that is running the bios not made for it.

The difference in clocks OP is seeing is probably due to the difference in chip quality in your cards and has nothing to do with the bios' themselves.

thebski

mrkwhlr2

save both bios's

flash the latest bios to the other card using nvflash....problem solved.

now you have two cards running identical.

If the cards did have a hardware level change (like memory chips) this would be an extremely poor idea as it could brick the card that is running the bios not made for it.

The difference in clocks OP is seeing is probably due to the difference in chip quality in your cards and has nothing to do with the bios' themselves.

Its and extremely poor idea to Flash bios on any hardware unless SAID hardware is not working  correct. yet people do it anyway. IMO hardware should never have there bios flashed unless said HARDWARE is not working correct. IT one thing to fubar software with update that can be easily fixed, it another to fubar hardware cause bios flashing.

thebski

mrkwhlr2

save both bios's

flash the latest bios to the other card using nvflash....problem solved.

now you have two cards running identical.

If the cards did have a hardware level change (like memory chips) this would be an extremely poor idea as it could brick the card that is running the bios not made for it.

The difference in clocks OP is seeing is probably due to the difference in chip quality in your cards and has nothing to do with the bios' themselves.

As long as you have the original BIOS for a gpu, it's IMPOSSIBLE to 'brick' a card. Unless you physically fry something, it's just not possible.