Compared to the i9-9880H in my 16" MacBook Pro: hw.cachelinesize: 64 hw.l1icachesize: 32768 hw.l1dcachesize: 32768 hw.l2cachesize: 262144 h

Compared to the i9-9880H in my 16" MacBook Pro: hw.cachelinesize: 64 hw.l1icachesize: 32768 hw.l1dcachesize: 32768 hw.l2cachesize: 262144 hw.l3cachesize: 16777216 The M1 doubles the line size, doubles the L1 data cache (i.e. same number of lines), quadruples the L1 instruction cache (i.e. double the lines), and has a 16x larger L2 cache, but no L3 cache.