Tiger Lake performance profile

By: anon (anon.delete@this.anon.com), September 19, 2020 11:50 am
Room: Moderated Discussions
Andrei Frumusanu (andrei.delete@this.anandtech.com) on September 19, 2020 11:52 am wrote:
> anon (anon.delete@this.anon.com) on September 19, 2020 11:08 am wrote:
> > Andrei F (andrei.delete@this.anandtech.com) on September 19, 2020 10:43 am wrote:
> > > 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.
> >
> >
> > Andrei regarding the SPEC2006 ST test, you say TGL single core power draw
> > is 20-21W (at up to 4.8G) but this is for the 28W TDP part right?
> >
> > What is the TGL power draw in this test for the 15W TDP part?
>
> Well, 15W, since it throttles. It no longer sustains 4.8G, and clock down depending on workload.


Yeah but like what is the measured power draw for the 15W TDP part on SPEC2006 ST?
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                    Tiger Lake performance profileAndrei Frumusanu2020/09/19 10:52 AM
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          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
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    SuperiorityAndrei F2020/09/18 02:39 AM
      SuperiorityRobert Müller2020/09/18 02:59 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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