ASIC and silicon quality are two distinctly different things. Intel definitely has
raptorlake Xeons. A large portion of 13/14 900K's can get to stock 14900KS clocks.
Silicon quality loosey refers to the ability of a chip to reach higher clocks than others because there are less imperfections in the wafer used for the chip, better doping, et cetera. ASIC quality is a rather poor term used to define how much or little voltage leakage any given chip has. Typically a very tight chip, meaning very little leakage, will not overclock very well, but will be very efficient at the clocks it can attain. A leaky chip will be less efficient, but typically can attain higher clocks.