This paper describes Synopsys’ DesignWare ARC EM Processor Family, the company’s licensable CPU cores for embedded applications that benefit from 32-bit RISC performance with a tiny silicon footprint and minimal power consumption. According to vendor testing with EEMBC, SPEC, and other benchmarks, the ARC EM CPUs have excellent code density while delivering high performance using less power in a small silicon-area footprint. The Linley Group prepared this report after evaluating performance data and technical features for the recently upgraded EM4 and EM6 CPU cores.