Before revision: However, measured energy efficiency of SMT with parallel native and managed workloads on historical 130 nm to 32 nm Intel SMT (hyper-threading) implementations found that in 45 nm and 32 nm implementations, SMT is extremely energy efficient, even with inorder Atom processors.ASPLOS'11 In modern systems, SMT effectively exploits concurrency with very little additional dynamic power.
After revision: However, measured energy efficiency of SMT with parallel native and managed workloads on historical 130 nm to 32 nm Intel SMT (hyper-threading) implementations found that in 45 nm and 32 nm implementations, SMT is extremely energy efficient, even with in-order Atom processors.ASPLOS'11 In modern systems, SMT effectively exploits concurrency with very little additional dynamic power.