The company did not actually confirm which APU is used, but Chinese media were quick to gather some fresh data from their sources. The last-gen UM690 system packed Ryzen 9 6900HX APU, so it shouldn’t be surprising to see the Zen4 architecture upgrade in the same chassis.
According to the report, Minisforum UM780 would pack Ryzen 7 7840HS, the 16-core Zen4 APU with boost up to 5.1 GHz. The UM790 Pro is an even more powerful version featuring Ryzen 9 7940HS with 5.2 GHz boost. What is worth noting is that both systems have the same RDNA3 integrated graphics with 12 Compute Units, clocked at least 2.7 GHz (2.8 GHz for 7940HS).