Quad core processor series intel xeon quad core package boxed number of processing cores 4 number of threads 8 clock frequency 35 ghz turbo boost max turbo frequency 36 ghz processor code name haswell ep tdp 140 watt stepping revision r2 stepping l2 cache 4 x 256 kb l2 cache 1 024 kb l3 cache 10 kb voltage 13 v manufacturing process 22 nm suitable for intel system package fclga2011 features mmx sse sse2 sse3 sse41 sse42 advanced