Jose (1.delete@this.2.com) on September 19, 2020 2:40 am wrote:
> Andrei F (andrei.delete@this.anandtech.com) on September 18, 2020 3:26 am wrote:
> > Jose (1.delete@this.2.com) on September 18, 2020 1:24 am wrote:
> > > Doug S (foo.delete@this.bar.bar) on September 17, 2020 10:36 pm wrote:
> > > > anon (anon.delete@this.anon.com) on September 17, 2020 7:10 pm wrote:
> > > > > AnandTech's (SPEC ST performance) review is here: anandtech.com/show/16084/intel-tiger-lake-review-deep-dive-core-11th-gen/8
> > > > >
> > > > > All of TigerLake's extra performance over IceLake is due to higher clocks. And it significantly
> > > > > outperforms the Zen 2 based AMD Renoir chip (Ryzen 7 4800U). However not all is good: TigerLake
> > > > > experiences a noticeable IPC regression compared to IceLake. The memory subsystem is unable
> > > > > to keep up with the higher clocks, and the reworked cache is not enough.
> > > > >
> > > > > And it just barely beats Apple's A13 despite using significantly more power.
> > > > > Makes you think the A14 based Mac coming later this year will blow past Intel's
> > > > > best CPU microarchitecture in single threaded integer performance.
> > > >
> > > >
> > > > Going back what Apple stated about A14 being 40% faster than A12, A14 should be about 16% faster than A13.
> > > > Add 16% to the A13 scores and it easily beats those Tiger Lake numbers in SPEC2006, for both int and fp.
> > > >
> > > > That doesn't even include the bigger caches and wider memory that the A14X will get, nevermind
> > > > if they have something even better than A14X in store for that Macs arriving later this year.
> > > I always have my doubts with benchmark numbers under different operating systems.
> > > How can we compare SPEC/Geekbench etc numbers in iOS vs Windows?
> > >
> >
> > Because the OS is irrelevant. There's no system calls in either
> > SPEC or GeekBench, you're just running binary code on the CPU.
> >
> > The only valid concern is compiler differences between Apple's Xcode LLVM toolchain vs the
> > public Clang toolchains, and I've been told by industry people the differences are minor.
> No hardware interrupts, ISRs etc? How?
>
>

How is any of that relevant in a multi-core system?