10 core processor series intel xeon ten core package boxed number of processing cores 10 number of threads 20 clock frequency 31 ghz turbo boost max turbo frequency 35 ghz processor code name haswell ep tdp 160 watt stepping revision m0 stepping front side bus 4 800 mhz quickpath interface 96 gts l2 cache 10 x 256 kb l2 cache 2 560 kb l3 cache 25 kb voltage 13 v manufacturing process 22 nm suitable for intel system package fclga2011