Code Dynamics
That would be great robbanswe :), im messing up with gettin all cards recognized.
Because i have "8"gpus, maybe a bios update would it make it happen that all 4 Double GPU cards will work and let me boot up the pc.
@ the time i have 6 gpus aktive (3 cards), the 4 - dont let me pass with it booting up
 

Remember to write down any bios settings you have changed before a bios flash
in case you may need those to try later on.
It doesn't always erase the saved profiles, but there is always the chance it will,
some have said A58 does erase the saved profile.
Also to keep a certain bios that's on one of the 3 slots be sure to switch to the one
you want to have flashed before the flash is started.
Always drop any overclock back to default CPU clock before doing a bios flash.
Be safe and good luck gett all cards working.

I have always turn off the SR2 onboard audio in bios
since I could use a HDMI cable from video card to my monitor that has speakers and still have audio.

Amazing, This is really an extreme Ultra-End Build. Please make some more pics specific from the cards.
 
LK

If you are running out of PCI IOMEM (the 3GB Max setting in BIOS, you may have to modify the BIOS on your GPUs to reduce the aperture size. This may cost you some performance, but it will help with the IOMEM depletion. I don't think the SR-2 BIOS know how to map the 64-bit capable IOMEM blocks above the 4GB boundary, which is something that also breaks some Tesla cards, e.g. K40, which require a 16GB block.