18 core processor series intel xeon eighteen core package tray number of processing cores 18 number of threads 36 clock frequency 21 ghz turbo boost max turbo frequency 33 ghz processor code name broadwell tdp 120 watt stepping revision b0 stepping l2 cache 18 x 256 kb l2 cache 4 608 kb l3 cache 45 kb manufacturing process 14 nm suitable for intel system features sse sse2 sse3 sse4 sse41 sse42 ssse3 advanced vector extensions avx ad