4 ms·

The hlt instruction has been around for a while.

• post-it 3y ago
  I don't think that saved any power on a CPU without frequency scaling.
  • spookthesunset 3y ago
    Hmmm.... there was some windows program called "waterfall" that kept your CPU cool when it was idle. Very useful for overclockers.
    • psd1 3y ago
      Was it snake oil like memory compressors? Are some instructions cooler than others?