And despite their broadly similar performance, the RK3588s have significantly better power draw.

However I’m not sure of any of the rk3588 vendors that support both UEFI and have a full-size PCIe slot like the MS-R1 has.

RK3588 has many times better power consumption, but their performance is not at all similar.

8 Cortex-A720 vs. 4 Cortex-A76 means at least 3 times better performance for optimized programs.

Also for I/O throughput, this computer has far more fast PCIe lanes than RK3588, allowing many fast peripherals.