system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How are "binned" CPU's or GPU's different from their "lower-quality" counterparts?

When a chip manufacturer makes a chip like a CPU, they occasionally "bin" these chips. Some of them are inherently better than others. What about those binned chips makes them better, though? If I were to take two CPUs with the same make and model and crack them open and smack them down under a microscope, what about the binned CPU would make it better than its lesser sibling?
gpt
CPU making isn't a perfect process.  A lot of it relies on purity of the silicon wafer that's grown in a lab.  Impurities in the wafer may degrade performance.  Secondly, the lithography process in which the chips are made isn't perfect.  It relies on the traces to be etched on to the silicon by exposing it to UV light.  Think of an overhead projector in school with a transparency on it.  The areas that are black on the transparency don't react with the solution the silicon is submerged in while the areas that are clear cause the solution to react with the silicon.  A CPU maker ideally wants 100% of the chips on the wafer to work, but some of them don't get etched correctly so parts of the chips get disabled and maybe you get an i3 instead of an i7, or maybe you get a 2070 instead of a 2080.