Chester (lamchester.delete@this.gmail.com) on November 25, 2020 3:49 pm wrote:
> Dummond D. Slow (mental.delete@this.protozoa.us) on November 25, 2020 8:29 am wrote:
> > Adrian (a.delete@this.acm.org) on November 21, 2020 7:14 am wrote:
> > >
> > >
> > > At TechSpot, they have run a set of benchmarks on all Zen generations
> > > (1, 1+, 2, 3) and Comet Lake (i.e. Skylake microarchitecture).
> > >
> > >
> > > What is interesting is that, as much as possible, the only differences
> > > in the 5 systems were in the core microarchitecture.
> > >
> > >
> > > The clock frequency was fixed at 4 GHz for all systems, all had 8-core CPUs,
> > > all had the same memory modules, the same coolers, the same GPUs.
> > >
> > > Therefore these show the evolution of the IPC, as well as this is possible.
> > >
> > > (Until the launch of Rocket Lake, there are no newer Intel
> > > CPUs that could be compared in identical conditions.)
> > >
> > >
> > > https://www.techspot.com/article/2143-ryzen-5000-ipc-performance/
> > >
> >
> > Seems that most of the responses are various arguments so dunno if many people are actually
> > interested, but there are also IPC tests from The Stilts. He uses many non-standard programs
> > for it so it might be intereseting as an addition to standard benchmarks.
> >
> > https://imgur.com/a/3B8QcEG
> >
> > It should all be single thread, locked to 4.0 GHz tests. Average number is here:
> >
> >
> > MTS = Zen 2, VMR = Zen 3, CML = Comet Lake/Skylake
> >
> > Description here.
>
> I'm gonna criticize this test for the opposite reason juanrga criticized the other one: this person
> didn't match memory speeds. Intel was tested with DDR4-2933, AMD was tested with DDR4-3200. When
> comparing architectures, it's best to keep variables constant as much as possible.

No. He tested on stock settings: "officially supported memory frequency during the testing".

Stock memory frequency for the Intel 10900K system is 2933MHz and for all Zen3 desktop chips released the frequency is 3200MHz.

That is how a proper IPC comparison is made.