6 core processor upgrade series intel xeon six core socket socket 2011 number of processing cores 6 number of threads 12 clock frequency 21 ghz turbo boost max turbo frequency 26 ghz processor code name ivy bridge ep tdp 80 watt front side bus 3 600 mhz quickpath interface 72 gts l2 cache 6 x 256 kb l2 cache 1 536 kb l3 cache 15 kb manufacturing process 22 nm suitable for fujitsu siemens system package fclga2011 features mmx sse sse2 s