Quote Originally Posted by nn_step View Post
Actually hyper-threading was criticized for being energy-inefficient. For example, ARM has stated SMT can use up to 46% more power than dual core designs. Furthermore, they claim SMT increases cache thrashing by 42%, whereas dual core results in a 37% decrease.

Not to mention that in May 2005 Colin Percival demonstrated that a malicious thread operating with limited privileges can monitor the execution of another thread through their influence on a shared data cache, allowing for the theft of cryptographic keys.

Hyperthreading is largely a strong negative effect to any system.
Link? It seems to me that the performance of recent Intel processors has proven the effectiveness of HT