Pentium 166 MHz SL27H underside. Canon R5, MP-E 65mm @ 2x, Stackshot. Focus stack of 47 images.
Soviet DEC F-11 clone CPU. Canon R5, MP-E 65mm, Stackshot. Focus stack from 70 images shot at 1x.
IBM PowerPC 604e. Canon R5, MP-E 65mm, Stackshot. Focus stack of 68 images.