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Do you have RISC-V-based desktop and laptop ?

RISC-V has started from small low power low performance microcontrollers.

Some companies are pushing RISC-V towards higher performance, just as ARM has been moving up from microcontrollers to smartphones and tablets and now into Apple PCs. RISC-V is currently around five years behind ARM, and catching up.

I've been using the SiFive "HiFive Unleashed" for about 2.5 years. It has quad 1.5 GHz 64 bit CPUs, 8 GB DDR4-2400 RAM, gigabit ethernet, and an SD card. It performs similarly to an original Raspberry Pi 3 and I run Debian Linux on it. Fedora is also available.

SiFive have a new board, the "HiFive Unmatched" which is expected to ship at the end of February. Its CPU is around 1.5x faster, it has 16 GB DDR4-2400, and in addition to ethernet it has built in USB and a PCIe slot. It has a mini-ITX form-factor and uses an ATX power supply. Its CPU is probably better than Pi 3+ performance, but with better RAM and peripherals (including being able to use a good modern graphics card) it may be quite a bit better in practice.

Something competitive with current x86 or Apple M1 is probably five years away.