Tiger Lake performance profile

By: Andrei F (andrei.delete@this.anandtech.com), September 19, 2020 9:43 am
Room: Moderated Discussions
Maynard Handley (name99.delete@this.name99.org) on September 19, 2020 10:34 am wrote:
> Andrei F (andrei.delete@this.anandtech.com) on September 19, 2020 8:29 am wrote:
> > Maynard Handley (name99.delete@this.name99.org) on September 18, 2020 5:00 pm wrote:
> > > itsmydamnation (no.delete@this.way.com) on September 18, 2020 3:19 pm 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.
> > > >
> > > > Why are there still large differences been Linux and Windows in GB5?
> > > >
> > >
> > > For a start the GB5 binaries are built with different compilers.
> > >
> > > Then, especially on x86, the OSs provide different policies regarding DVFS.
> > >
> > > Finally "large difference" is a problematic phrase. I'd consider anything less than 10% to
> > > be noise, but there's a certain class of hysterical internet user who thinks it makes sense
> > > to build their theory of conspiracy and persecution on 2% differences in benchmarks.
> > >
> >
> > GB5 uses the same compilers.
>
> I saw an article claiming that for GB4 they were different. You know they are the same for GB5?
>
> OK, checking now. You are correct!
> They were different for 4, but not for 5:
> https://www.geekbench.com/doc/geekbench4-cpu-workloads.pdf
>
> https://www.geekbench.com/doc/geekbench5-cpu-workloads.pdf
>
> Do you think my point for DVFS is correct, or does the board firmware have much more
> control than the OS over that? On x86 Win/Linux I have no idea where the knobs live.
>

I don't see the claim being that GB5 is performing differently in Win/Linux being valid in the first place.

DVFS might affect a few milliseconds but nothing significant.
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        Tiger Lake performance profileitsmydamnation2020/09/18 02:19 PM
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              Tiger Lake performance profileMaynard Handley2020/09/19 09:34 AM
                Tiger Lake performance profileAndrei F2020/09/19 09:43 AM
                  Tiger Lake performance profileanon2020/09/19 10:08 AM
                    Tiger Lake performance profileAndrei Frumusanu2020/09/19 10:52 AM
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      Tiger Lake performance profileDoug S2020/09/18 08:25 AM
  Tiger Lake performance profileAndrei F2020/09/18 12:04 AM
    Tiger Lake performance profileAnon2020/09/18 02:25 AM
      Tiger Lake performance profileAndrei F2020/09/18 02:31 AM
    Tiger Lake performance profileTravis Downs2020/09/19 07:26 PM
      Tiger Lake performance profileMichael S2020/09/20 09:02 AM
        Tiger Lake performance profileTravis Downs2020/09/20 04:34 PM
          Tiger Lake performance profileMichael S2020/09/21 12:38 AM
            Tiger Lake performance profileAndrei F2020/09/21 05:50 AM
              MKPI ? MPKI ? HPKI ? (NT)Michael S2020/09/21 06:03 AM
                MKPI ? MPKI ? HPKI ?Anon2020/09/21 06:22 AM
                  thank you (NT)Michael S2020/09/21 06:42 AM
                  MKPI ? MPKI ? HPKI ?none2020/09/22 12:12 AM
              SPEC Memory traffic & bandwidthAndrei F2020/09/21 07:35 AM
                SPEC Memory traffic & bandwidthAndrei F2020/09/21 07:36 AM
                  SPEC Memory traffic & bandwidthDavid Kanter2020/09/21 01:31 PM
                What is the meaning of multiple rows in few subtests? (NT)Michael S2020/09/21 07:45 AM
                  What is the meaning of multiple rows in few subtests?Andrei F2020/09/21 07:57 AM
            Poor L1D load bandwidthEric Bron2020/09/21 05:56 AM
              erratumEric Bron2020/09/21 05:59 AM
              Sorry I missread the graphEric Bron2020/09/21 06:14 AM
              Poor main memory load bandwidthMichael S2020/09/21 06:19 AM
            Tiger Lake performance profileTravis Downs2020/09/21 02:51 PM
              Tiger Lake performance profileAndrei F2020/09/22 06:03 AM
    Tiger Lake security fixes possible cause?Kevin G2020/09/22 05:10 AM
      Tiger Lake security fixes possible cause?Travis Downs2020/09/22 06:26 AM
  SuperiorityMichael S2020/09/18 01:58 AM
    SuperiorityAndrei F2020/09/18 02:39 AM
      SuperiorityRobert Müller2020/09/18 02:59 AM
        SuperiorityAndrei F2020/09/18 03:47 AM
          SuperiorityRobert Müller2020/09/18 04:45 AM
            SuperiorityAndrei F2020/09/18 05:17 AM
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      SuperiorityMichael S2020/09/18 06:51 AM
        SuperiorityAdrian2020/09/18 08:35 AM
          SuperioritythePirate2020/09/19 01:28 AM
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