Do you regret not going with a supermicro boards? I am actually looking to do the same style server build with the ASUS board because it is $400 new on newegg and the x13SAE is open box for $350 but $500+ new. It seems like they have very similar features except the pcie 3.0 slots on the asus board are full x16 which gives you a little more flexibility.I have two Asus Pro W680-ACE IPMI builds, one with i9-13900k, the other with i7-13700k. Both are servers that get run pretty hard. Both work well.
I do not remember what memory I used other than I selected it from the list of memory that SuperMicro lists as compatible with their W680 based X13SCA-F-O. I've always used Supermicro boards in my server builds, but, the X13SCA-F-O were a bit hard to come by when I did these, so, I took a chance on the Asus.
If you don't mind me asking what do you run on your LGA 1700 server? My desktop is alder lake but I haven't run proxmox on it and that is what I intend to do with the server build. My main reason for asking is because the P+E cores used to be a little but of an issue for the linux kernel scheduler but has supposedly been fixed in the newer kernels and proxmox can be have its kernel updated. I haven't come across anyone yet who is doing an LGA 1700 server
I also searched for an x13SAC board but couldn't find one do you know where I would be able to find it?