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Input:
Question: Will this work with sandy bridge e? Like 3970x without bios flash?
Document: This X79 fails soooooo hard. @the terrible Bios that doesn't work! Don't waste your money, as I returned it after just 15 days of agony!!! My old MSi Z68A put this deck to shame when it came to everything working as intended. No SSD caching?? Are you kidding?? PCi-e 3.0 doesn't work, what a pile of junk!!!! Went back to Msi, as they never produce bad boards like this one.
The PCI Express 3.0 slot is a great benefit for my 7970 playing Skyrim, I am now able to play with anti-lacing 4 or 8 sampling and  anisotropic filtering at 12 to 16. Too those that are familiar with Skyrim's graphical setting and impact this has on the game's performance will know why this is a big deal. Having the option to upgrade from my now Sandy bridge to an Ivy bridge later down the road is a definitely a plus.
Interesting I bring this up as the l.e.d lighting in my case was all blue (loved), now is like looking through an old pair of red and blue 3D glasses @_@, different. I initially I had problem removing the back plate nearly breaking the board, but after a call realized I had to unscrew the CPU chip holder to replace the backplate (rookie mistake).
The eVGA item I purchased was a refurb, but that was my call. This is a system upgrade from my old corei7 920 Gigabyte x58 Extreme DDR3 20gb 1600mhz to an corei7 3970x eVGA x79 Dark DDR3 16gb 2666mhz. The performance difference is very noticeable as evident in the windows 7 rating index going from a 7.5 to a 7.8 with no bios or system tweaks (I can easy max a 7.9, just haven't had the time to tweak).
Some people will have clearence issues thanks to the unnecesary big (and ugly) motherboard heat sink. Lack off features like WIFI and a pathetic Manual which is more like a poster, not a real profesional manual like you may see on other real manufacturers brands. Internal USB headers are not the same, one did work with my H100i Corsair Link and the other won't recognized it, i was about to RMA my H100i for this reason until i found it was another mobo issue. Everything for 400$ c'mon!
EVGA X79 Dark GPU slot get error not working power seems weak.the EVGA X79 Dark bios team must go away foreverNow i have to pay a Tech. hell my ASUS X79 Black is allot better.am i mad very mad very Sad.what should i do. with this DEAD SLOT it works in X8 my PSU IS EVGA 1000 PS.memory shows fine. what do i like so far nothing.
That's why earlier in this review I say it took me about two hours of constructing and deconstructing my system to fit this board, very annoying.All in all a solid performing board and the bios are monthly being updated, we're now up to v2.09 as of this review. There are still features I haven't had time to get into, because of my work schedule, but when I do I can say with confidence I think this board will deliver on it promise of extreme gaming and entertainment.
The SATA 3 ports did not work out of the box. After fiddling around with it for an hour and half, I decided to switch over the drive to my SATA 2 port. It finally detected and allowed me to install windows on my SSD. The boot menu in bios is awkward at times, otherwise its livable.Honestly, this is the first time I have been this frustrated with a motherboard. I normally stick with EVGA as I have no problems with their other components and RMA/ support is great.
Performs exactly as expected, I've yet to be disappointed by an EVGA product. It is also nice to see them finally offer a motherboard where the BIOS has mouse drivers and drop down menus.Word of caution for those using multiple graphics cards: there is a pci-e slot order, similar to the way RAM slots are ordered.
I like the service and everything was better than expected. I definitely would recommend this site  to all my friends and family.
Answer: It has a three positions selector switch that allows you to select the proper BIOS for your processor. It is explained in the setup manual when you install the motherboard. there is also an update for the Sandy Bridge E BIOS on EVGA after you install your motherboard I would recommend installing it.