would like to ask how many M.2 Nvme drives you can install that wont make your x16 pcie to x8 only?
asus maximus xi extreme you can only install 2x m.2 nvme on pch and if you use the dim.2 feature your x16 would only run on 8x, so max nvme drives you can install is only 2 so you don't gimp the x16 pcie for GPU, is the Godlike the same?
Digging into the manual this does not seem to be the case. The M.2 slots do share bandwidth with the PCH slot (PCIe 5 on the GODLIKE) and with the SATA and U.2 ports, but there is no indication that populating the M.2 slots has any affect on the primary PCIe x16 slot. With that said, I don't have enough M.2 drives to actually test this, and so I can't guarantee anything.
A good solution may be to pick up a PCI M.2 expansion card (like the XpanderZ that comes with the GODLIKE). They are not expensive, and should be able to run at least two drives off the PCH PCIe slot on any given board. That should leave you with at least one functional M.2 slot, if not two, without compromising PCIe lanes (though you will definitely lose some SATA ports if that matters).
Not the most concrete answer, but I hope it helps.
Edit: The two boards have pretty much identical storage controllers (the M.2 drives are powered exclusively by the Z390 chipset), so in theory they would have the same limitations.
After digging through the manual for the ASUS, I didn't find anything explicitly saying that using the dim.2 slot would cut the PCIe_1 slot bandwidth, but I haven't had my hands on the board.
If you are looking for a lot of storage, the MSI board may be a better choice. They are similarly priced, but the ASUS has 10 Gigabit LAN, and the MSI has the Streaming Boost and Xpander-Z.
The ASUS has only two M.2 slots, plus the (two I believe?) slots added with the dim.2 card. The MSI has 3 M.2 slots, plus two added with the XpanderZ. However, using all five slots in the MSI
will cut your GPU bandwidth to x8 (you lose access to the PCH powered PCIe slot if you populate all three M.2 slots so you will have to use one of the two other PCIe slots for the XpanderZ which share bandwidth with the GPU). So your practical maximum with the MSI is still 4 M.2 drives.