Clock rate limits are directly due to physical heating limits on-chip with silicon. That's what it stopped being an automate gimmme of scaling and it likely ne

Clock rate limits are directly due to physical heating limits on-chip with silicon. That's what it stopped being an automate gimmme of scaling and it likely never will come back again as a systematic thing because the laws of physics can't be changed. Cores were the direct answer to this limit. But then Amdahl's Law limits what cores can do. What this story means is someone decided to trade off thermal effects for clock rate. The primary effect of heat is reliability - that is, how many years of operation can you expect with the final product. Heat kills the life span of transistors, metal and oxide. Honestly there's nothing special about hitting 6 GHz - it's not some magical thing. Magical thinking people!!