These cards are built for mid range/High-end pcs, or built for enterprises that use virtual machines/cloud computing. The prices are much lower because the Arc cards have less technology onboard.

The difference between an Arc GPU vs Amd/Nvidia is amd/Nvidia use hardware for alot of the logic the gpus do, while Arc uses software.

Also in a few years, it will be hard to find a mobo/CPU that doesn’t support Rebar.