Original BIOS 402, flashed to 1604, reverted back to 804, all with USB stick and EZ flash.
Tweaker page :
AI O/C tuner to XMP,
Ratio Sync to enabled
Core ratio to 42
mem frequency to 1600
Spi booster to enabled
CPU manual volt to 1.100
DRAM volt to 1.50000
CPU spread spectrum to disabled
Advanced page
Primary display to PCIE
render standby to disabled
iGPU multi monitor to disabled.
PCIEX_1 tried Auto, Gen 2 and Gen 3
HD audio disabled
Blue tooth disabled
WI-FI disabled
Asmedia USB 3.0 controller disabled.
Chip set drivers tried the latest from the ASUS website, and the drivers off the disk, with a format and clean install in between
LAN drivers, tried the latest from the ASUS website, and the drivers off the disk, with a format and clean install in between
IME firmware, with and without.
When I first built it I did a format and clean install, in the 4 or 5 weeks since I built it I have formatted and clean installed windows 4 times to try the drivers off the disk and the latest form the ASUS website. I have tried the latest LAN drivers from the ASUS website, from the intel website and now am using the drivers off the supplied disk. Also did the NVM update before installing the latest LAN drivers as per ASUS website.
Tomorrow I am going to revert back to the 402 BIOS, format, clean windows install and use the ASUS supplied CD to install all the drivers and see how I go with it set up without all the newer drivers and chip sets.
Intel i7 3770K@ 4.5GHz,
Silverstone Heligon HE01
ASUS Maximus V Formula, 1803 BIOS
16GB Corsair Vengeance 1600 @ 1866MHz, 9-10-9-27
MSI GTX 970
Samsung 250GB SSD
Seagate 500GB 7200 RPM HDD
Antec Earthwatts 650 PSU
NZXT Phantom 630
Win 8 Pro x64