SLI does not equal GPU bios,your issue would point to driver or hardware conflicts .Bios updates like this that are posted and suggested/approved to change your current Bios are rare and this was a near launch fix for some overlooked issues.Hench no "forced/suggested" Bios update since 13+ months ago.I glanced at your posts on this and a quick look would lead me to think you might want to check for a faulty PCI lane.
a List off bios releases notes does not happen and if it did it would mostly only contain hardware compatibility,memory,controller etc not anything even remotely about SLI .The initial fix might have as it was a new card but since then no BIOS SLI issue has been a topic or needed ,it works ,your Pc seems to be the issue as you mentioned you have tried 3 different OS's and the one thing across them all that has stayed constant is the mobo i believe .Ive never heard of software causing SLI issues so it sadly eaves little to consider past your mobo itself .Can you try these card in SLI on another PC? preferably the same make mobo? i would start with that.Then maybe stress test each card by itself ,not sure if that mobo will let you use secondary PCI-E slot as primary but its a idea to test it

BioHazardSperm
SLI does not equal GPU bios,your issue would point to driver or hardware conflicts .

 
Fair enough, it's just the the mentioned 'improved compatibility' might of had consequence.  I'd seen about 5 different BIOS for this card listed elsewhere and just hoped there would be a bit more documentation for them (it's something I have to do for my own software/firmware..).  As it is I tested with the new BIOS and same problem so in this case it makes no difference.   I've got another mainboard arriving tomorrow to test with - i'd rather it wasn't a dodgy card causing the problem since that's an easier swap by far (waterblocks etc).  In any case there's another thread about my 'fun' so i'll stop spamming this one :)
 
 

Where is 02G-P4-2672-KR for Super clocked 2mg card ?

I downloaded, unzipped the files to a folder on my desktop. When I run the update application, a black MSDOS window pops up and disappears too quickly to read. Update fails. Any idea why?

Edit: Reading is power.

Wow, this update really shows how awesome EVGA's support is. Kudos!
 
BTW, I wanna know if the GTX 650 Ti Boost 2GB is compatible with the Dell XPS 8300. Have you guys heard any issues with it?

Quick question,
This firmware installation applies to both of my cards automatically, correct?

Elenion
Quick question,
This firmware installation applies to both of my cards automatically, correct?

It will prompt you to update each card when you run the file.

Hello,
 
Recently having problems playing BF4.  Screen goes black for a few seconds, then returns to normal after a few seconds.  May or may not happen again the following few minutes. - I have 2 GTX 670s in SLI.  I have tried several Nvidia driver installs / clean uninstalls using display driver uninstaller, updated latest MB bios, tried running one card...either black screen or artifacts in PCIE slot 1 or slot 3.  Then switched slots...then switched cards...does the same thing regardless of PCI slot or card used.
 
Seems odd that both cards would suddenly have issues.  PSU is thermaltake 1200 and MB is ASrock z77 extreme6.
 
I wanted to try updating the GPU firmware - Can you tell me if one is available for the cards I have?  I do not see my cards as one of the firmwares available.
Part number is 2004 0005
"02G-P4-2675-BR"

I have a GTX 670 FTW.  I was having some blue fuzz artifacting but no abnormal temperatures.  I had multiple driver crash/recoveries today after upgrading to the 331.65 drivers.  I thought a FW flash might help.  I hadn't had a driver crash in about an hour before I started, so I gave it a shot.  I don't recall now but I think I was on the 4B firmware prior to flash.  (Yes I am dumb for not backing it up).  During firmware flash, after the tool erased the firmware, the system crashed. 
 
After the crash, since the tool had already wiped the firmware, I couldn't boot.  Fortunately I have onboard video and a can do attitude.  It took 3 hours but I was able to force a rom back onto the card.
 
I don't know if there is anything that could be done differently or if my problem is unique in any way.  I think I'll try to reflash the current version as nvflash reported a problem with verification of the flash.  Time will tell.
 
Some relevant info:
331.65-desktop-win8-win7-winvista-64bit-english-whql.exe
Gigabyte Z87M-D3H Motherboard
Intel 4670K i5 Haswell
Windows 8 Home Premium with all updates applied
GTX 670 FTW 2G