Yesterday i received my new g1 WiFi, along with new ram and cpu. After installing, only one video card is being detected. Both cards work in slot1, though ihaven't tested 3 or 4 yet. Board had bios F4 and is rev 1. Tried to qflash with no luck (invalid image or something) so used @bios and got to f7. No luck.
Tried both Windows 10 tech and 7 pro. Both cards work and sli worked in previous board. Tried included sli hard bridge and soft, as well as my older bridges. Windows driver and nvidia, as well as multiple installs to 3 different drives, one drive at a time with and without optical drive.
I'll test 3 and 4 when i get home, and update.
Specs:
5820k
corsair h100 cooler
corsair 16gig 2800 ddr4 (4x4)
X99 g1 Wifi
evga gtx580 x2
ocz vertex ssd
wd velociraptor and cavalier green