Questions about Gigabyte B660M GAMING X AX DDR4

answering my own question but this motherboard has Q-Flash, so if the BIOS version is out of date (which it probably is), you can update it without needing a CPU.

The B760M Gaming X AX (LGA 1700, etc.) is available (cheaper) and most likely better. it's just the follow-on, I'd buy it. If you build the Ct Sparsamer Allrounder, you can always check by emailing the people there.

Yes it is. Cause it’s a LGA 1700 socket. You also can use Intel‘s 13th Generation if you want because the socket is the same