14 core processor series intel xeon fourteen core package boxed number of processing cores 14 number of threads 28 clock frequency 26 ghz turbo boost max turbo frequency 36 ghz processor code name haswell ep tdp 145 watt stepping revision c1 stepping front side bus 4 800 mhz quickpath interface 96 gts l2 cache 14 x 256 kb l2 cache 3 584 kb l3 cache 35 kb voltage 13 v manufacturing process 22 nm suitable for intel system package fclg