In previous board generations, the "Gaming" was always the sign of a higher-up model, but for Z790, it just means they made them look a bit nicer. I talked about it
here before.
Here are some further general remarks about the board models.
I tried to create a comparison of the board models. Everything that is the
better solution is marked in bold font. The better the board, the further down it's listed.
The order of the middle three boards is subjective (for example the single HDMI 1.4 output on the Gaming Pro WIFI could be a dealbreaker for some), but the Z790-S WIFI is clearly the worst, and the PRO Z790-A (Max) WIFI is clearly the best.
PRO Z790-S WIFI: First PCIe slot is
PCIe 5.0 x16, CPU VRM only uses cheap discrete MOSFETs, low-end Realtek ALC897 audio chip, 1x USB-C 3.2 (20Gb/s), 4x USB-A 3.0 (5Gb/s), 2x USB-A 2.0, Realtek 2.5GBit LAN, 1x M.2 heatsink, seperate rear I/O cover, smaller VRM and chipset heatsink, 1x HDMI 1.4 and
1x DisplayPort out.
Fan control only possible for 4-pin PWM fans, not for 3-pin fans! See my
fan control guide.
No EZ Debug LEDs, no Flash BIOS Button! Also see
here.
This PRO Z790-S WIFI should be avoided, the Z790-P is much better already for only slightly more money!
PRO Z790-P WIFI: First PCIe slot is
PCIe 5.0 x16, CPU VRM uses 14x 55A VCore
powerstages, low-end Realtek ALC897 audio chip, 1x USB-C 3.2 (20Gb/s), 1x USB-A 3.1 (10Gb/s), 2x USB-A 3.0 (5Gb/s), 4x USB-A 2.0, Intel 2.5 GBit LAN, 1x M.2 heatsink, seperate rear I/O cover, smaller VRM and chipset heatsink,
1x HDMI 2.1 and 1x DP out.
Fan control only possible for 4-pin PWM fans, not for 3-pin fans! See my
fan control guide.
Z790 Gaming PRO WIFI: First PCIe slot is PCIe 4.0 x16, CPU VRM uses 14x 55A VCore
powerstages, low-end Realtek ALC897 audio chip, 1x USB-C 3.2 (20Gb/s),
3x USB-A 3.1 (10Gb/s),
4x USB-A 3.0 (5Gb/s), 4x USB-A 2.0, Realtek 2.5GBit LAN
and 1GBit LAN,
3x M.2 heatsink,
integrated rear I/O cover,
larger VRM and chipset heatsink, only 1x HDMI 1.4 out.
Fan control possible for
4-pin and 3-pin fans.
Z790 Gaming Plus WIFI: First PCIe slot is
PCIe 5.0 x16, CPU VRM uses 14x 55A VCore
powerstages, low-end Realtek ALC897 audio chip, 1x USB-C 3.2 (20Gb/s), 1x USB-A 3.1 (10Gb/s), 2x USB-A 3.0 (5Gb/s), 4x USB-A 2.0, Intel 2.5 GBit LAN,
4x M.2 heatsink,
integrated rear I/O cover,
larger VRM and chipset heatsink,
1x HDMI 2.1 and 1x DP out.
Fan control possible for
4-pin and 3-pin fans.
PRO Z790-A (Max) WIFI: First PCIe slot is
PCIe 5.0 x16, CPU VRM uses
nice 16x 80A VCore
powerstages, Realtek
ALC4080 audio chip, 1x USB-C 3.2 (20Gb/s),
3x USB-A 3.1 (10Gb/s), 2x USB-A 3.0 (5Gb/s), 2x USB-A 2.0, Intel 2.5 GBit LAN,
3x M.2 heatsink,
integrated rear I/O cover,
larger VRM and chipset heatsink,
1x HDMI 2.1 and 1x DP out.
Fan control possible for
4-pin and 3-pin fans.
So the PRO Z790-A WIFI combines most advantages in one board. Except it has no RGB, so to some it might look a bit worse.
But technically it's the best board of these five, and the board model that i regularly recommend even for something like a 14th gen i7/i9.