> Gains in instructions-per-clock start to flatten out. And that's where the gains were coming from in the last years. This is commonly claimed but it's actual

> Gains in instructions-per-clock start to flatten out. And that's where the gains were coming from in the last years. This is commonly claimed but it's actually false for x86_64 desktop parts. For a single core scalar integer workload the IPC boost from i7-2700k to i7-7700k was maybe 20-25% on a great day, but the base frequency increase was a further 20%, and max boost freq increase ~15%. The frequency increase is of similar importance as the IPC increase.