6 core processor upgrade series intel xeon six core number of processing cores 6 number of threads 6 clock frequency 16 ghz turbo boost processor code name haswell ep tdp 85 watt stepping revision r2 stepping front side bus 3 200 mhz quickpath interface 64 gts l2 cache 6 x 256 kb l2 cache 1 536 kb l3 cache 15 kb manufacturing process 22 nm suitable for hewlett packard system package fclga2011 features mmx sse sse2 sse3 sse41 sse42 ad