Hello,
I just wanted to report the following bugs in the GA-Z77N-WIFI :
1/Bios F3d : can't come back from sleep with Windows 8 (works with Bios F2), black screen with GTX 660Ti forces reboot.
2/Bios F2 and F3d : no Wake On LAN feature, even if the manual talks about it...
3/Bios F2 and F3d: no overclocking/underclocking features. This is the main idea behind Z77 vs H77, I paid 20$ extra vs H77 to get it and we have no voltage options in the Bios.