From Fedora Project Wiki
- [tbzatek] What is the minimum CPU required to have reasonable performance? Will we limit gnome-shell animations for slower CPUs?
- [ajax] "Minimum" is handwavey. It really depends on your pain tolerance and the size of your display, but (for example) CPUs without SSE2 are probably going to be unusable. It is expected that the shell will disable shadows and reduce animations in this mode.