AMD Ryzen 7 7840U Windows 11 vs. Linux CPU Performance

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  • mSparks
    replied
    Originally posted by yump View Post
    It's bizarre to see such massive swings between different test scenes in LuxCoreRender. I would expect it has the same thread count and activity patterns no matter what the scene is. Maybe some of the scenes use more power?
    It should problably be dropped as a benchmark, e.g.
    image.png
    The loser on min of 0.2 and max greater than the "winner", looks like its perf outcome is heavily dependant on some random seed, so all it tells you is "it did some calcs in some time".
    It would be great if the benchmarkers generally started doing some proper statistical analysis on the results (ffs, R is cross platform and free/open source, there is no excuse not to) I seriously doubt if there is any statistically significant difference in any of those Luxcore benchmarks.
    Last edited by mSparks; 18 August 2023, 10:16 PM.

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  • yump
    replied
    It's bizarre to see such massive swings between different test scenes in LuxCoreRender. I would expect it has the same thread count and activity patterns no matter what the scene is. Maybe some of the scenes use more power?

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  • yump
    replied
    birdie you have fundamentally misunderstood the reason for W1zzard's Windows tweaks. Techpowerup is benchmarking hardware, not software. Therefore, the Windows install is neutered to be as static as possible so that all of the difference between results can be attributed to the choice of graphics card. But in this article, the software is the varied parameter. If Windows performs inconsistently in its default configuration, tough luck for Windows.

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  • guzz46
    replied
    Originally posted by HEL88 View Post
    Linux fans who visit the general computer forums and the Windows forums always write that Linux is several times faster than Windows, and that Windows is so slow that it is unworkable.

    The linux foundation pays them for this?? Is that what the donations are for?

    Has open source religion brainwashed them?

    Years ago my mother brought a low end intel pentium netbook, I think it uses an intel N3050, and that thing was dog slow with windows on it, booting, logging into the desktop, opening applications, and this was a fresh windows install too, you just spent a lot of time waiting for things to happen, but it actually runs ok with linux and xfce on it, web browsing is still kind of slow, but you can't do much about that beyond buying a more powerful laptop, and the thing would run faster if I put something even lighter on it too.

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  • avis
    replied
    Originally posted by Linuxxx View Post

    To be fair, Michael's PTS does run each test at least three times to ensure there are no major run-time variations, so all results are reproducible.

    And the OOTB Ubuntu settings are anything but performant, yet it still was holding up remarkably well...
    In certain older articles Michael sometime has provided the data on test scores variation but not today, so it's hard to say. I just want a peace of mind, that's it. Making sure that no major background jobs are running and Windows is prepared for benchmarking looks easier than for us arguing almost in vain.

    When people ask me to perform benchmarking I make absolutely sure my results are reproducible and verifiable.

    Anyways Linux is faster in most of them, so there's that It's unlikely anything can change considering that Windows 11 is running so much cruft by default.

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  • Linuxxx
    replied
    Originally posted by avis View Post

    When you do benchmarking you want your system behavior to be predictable and tests to be repeatable.

    If you don't prepare Windows for that, it may run certain background jobs unexpectedly (not limited to Windows Updates) and screw up your testing completely.

    Linux doesn't need that because an average Linux desktop install almost has zero background jobs aside from system logging.

    I wanted to end this message with some egregiously caustic remarks about someone's extremely intelligent comments but decided not to.
    To be fair, Michael's PTS does run each test at least three times to ensure there are no major run-time variations, so all results are reproducible.

    And the OOTB Ubuntu settings are anything but performant, yet it still was holding up remarkably well...

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  • mSparks
    replied
    Originally posted by HEL88 View Post
    Linux fans who visit the general computer forums and the Windows forums always write that Linux is several times faster than Windows, and that Windows is so slow that it is unworkable.

    The linux foundation pays them for this?? Is that what the donations are for?

    Has open source religion brainwashed them?

    for most real world multithreading operations on a multicore multithread CPU, windows is indeed several orders of magnitude slower than linux and macos - heck any posix system.
    This is because NTFS and virtual memory operations are not atomic on windows, and windows has no support for fork()

    Only exception to this is if you are running programs on WSL2 or their new linux emulator for android applications, and using a modern filesystem not otherwise available for microsofties on winblows. - Their current workarounds to try and compete.

    In situations where that actually matters, developers do not target winblows as a platform, so don't expect any comparison benchmarks.

    However the average user setting up WSL2 et al is about as "real world" as putting 3 weeks into tweeking windows 11 so it actually half works, or cooling your CPU with liquid nitrogen.
    Last edited by mSparks; 18 August 2023, 06:18 PM.

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  • citral
    replied
    Originally posted by Mitch View Post

    That's pretty cool. I might try TLP. I was able to set my policy to power and my governor to powersave and p-state to active. The battery life is notably better and it runs much quieter and cooler. I'll see if either TLP beta or one of the other links someone posted can let me limit power. These CPUs are fast enough that I'd rather cap the clockspeed a little. IIRC, perf/Watt is better when you're not hitting the highest speed. I think the sweetspot was like 1.6 or something like that. For now, I want to try 2.4 since it's below my processor's base speed (2.7 base, 4.7 turbo).
    Obviously, past a certain threshold, it's diminishing returns territory indeed. Boosting is way past that, not something desirable on battery. At least a 15W TDP ryzen laptop needs at most a 45W PSU while boosting + max brightness + max GPU etc, the latest "6W" intel N200 needs a... 65W PSU. But they have better efficiency at idle to be fair.

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  • citral
    replied
    Originally posted by avis View Post
    I wanted to end this message with some egregiously caustic remarks about someone's extremely intelligent comments but decided not to.
    Yeah, that's clever of you because you'd have looked like an idiot. It's not Michael's problem if windows doesn't perform its best stock. And in that sense, while I've been crictical of his latest risc-v benchmark, in a way it makes sense too, to benchmark what the manufacturer offers and not what a gazillion different tweaks could have brought. And can't be reproduced consistently.
    Last edited by citral; 18 August 2023, 05:25 PM.

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  • avis
    replied
    Originally posted by citral View Post

    And? Nobody's going to do that except anal people who want to demonstrate something, and he doesn't "prepare" Ubuntu either. So it's a fair, out of the box A/B. What else now, should he make absolutely sure no forced update is running while doing windows benchmarks? Disable telemetry? At 3am at night when the system is done with all its background obscure stuff?
    When you do benchmarking you want your system behavior to be predictable and tests to be repeatable.

    If you don't prepare Windows for that, it may run certain background jobs unexpectedly (not limited to Windows Updates) and screw up your testing completely.

    Linux doesn't need that because an average Linux desktop install almost has zero background jobs aside from system logging.

    I wanted to end this message with some egregiously caustic remarks about someone's extremely intelligent comments but decided not to.

    Leave a comment:

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