3 ms·

ICs have just looked like mirrors for a while now. See this shot of a 14nm Vega die on the left and 28nm Fury die on the right: https://www.techpowerup.com/rev

• loser777 9y ago
  I think you linked to a flip chip---you would expect a mirror finish from the bulk silicon side.
  • opencl 9y ago
    Ah yes you're right of course. Has there been anything in the past few years made on modern processes with the die actually visible? Desktop/laptop CPUs and GPUs have all been flip chip for at least the past decade, mobile SoCs are package on package, most other stuff is encased in plastic.
    • pantalaimon 9y ago
      der8auer did flip the Zen dies in the Threadripper over and ground them down to look what's inside. The video gives a good impression of the dimensions of the die and the structures inside. https://youtu.be/N-uKQ6RfUdk https://youtu.be/N-uKQ6RfUdk
    • madengr 9y ago
      Some of the RF processes. The HMC6300 is a mmWave flip chip with visible (to the eye) structures. Even then, it’s limited to passive structures, and maybe the PA output transistors.