As mentioned, the AX68U is an awkward AX2700 class platform. We get these numbers with the router offering 861Mbps on the 2.4GHz band and 1800Mbps on the 5GHz band, an interesting setup with all client Wi-Fi 6 devices using 2×2 configurations, and the router setup for 3×3.
The AX68U is a Broadcom platform, details are unknown, but we know it’s a 1.8GHz dual-core CPU that leans to it being the BCM4906 with a likely pairing with the BCM6710 for the radio. 2
56MB flash and 512MB of memory round out the internal hardware while connectivity is pushed over three antennas and 5x Gigabit LAN/WAN ports.
