As far as I can tell mate, the 9 drivers are for Z87 boards and the 8 drivers are for the Z77 boards, I have the MVF and Win 8 so I just used the drivers that windows update provided, the 8.1.0.1263 drivers.
The 9.0.5.1367 are for these boards and you can see they all have 87 in them,
Intel® Desktop Board DH87MC
Intel® Desktop Board DH87RL
Intel® Desktop Board DZ87KLT-75K
So I wouldn't use the 9.0.5.1367 drivers.
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