Kaby Lake Core i7-7500U Versus Skylake Core i7-6500U on Dell XPS 13

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Web JavaScript & HTML5 Benchmarks

Mozilla Kraken 1.1: link

Kraken is a JavaScript performance benchmark created by Mozilla that measures the speed of several different test cases extracted from real-world applications and libraries. Kraken uses a test harness based on the SunSpider benchmark. Results are reported in milliseconds (lower is better).

Google Octane 2.0: link

Octane 2.0 is a benchmark created by Google that measures a JavaScript engine’s performance by running a suite of tests that is supposed to be representative of today’s complex and demanding web applications. Octane‘s goal is to measure the performance of JavaScript code found in large, real-world web applications, running on modern mobile and desktop browsers. The latest Octane 2.0 benchmark includes four new tests to measure new aspects of JavaScript performance, including garbage collection / compiler latency and asm.js-style JavaScript performance.

JetStream 1.1: link

JetStream combines a variety of JavaScript benchmarks, covering a variety of advanced workloads and programming techniques, and reports a single score that balances them using geometric mean. JetStream includes benchmarks from the SunSpider 1.0.2 and Octane 2 JavaScript benchmark suites. It also includes benchmarks from the LLVM compiler open source project, compiled to JavaScript using Emscripten 1.13. It also includes a benchmark based on the Apache Harmony open source project’s HashMap and a port of the CDx benchmark, hand-translated to JavaScript.

WebXPRT 2015: link

WebXPRT 2015 uses scenarios created to mirror the tasks you do every day to compare the performance of almost any Web-enabled device. It contains six HTML5- and JavaScript-based workloads: Photo Enhancement, Organize Album, Stock Option Pricing, Local Notes, Sales Graphs, and Explore DNA Sequencing.

Web JavaScript & HTML5 Benchmarks Results Summary: The Dell XPS 13 9360 with the Intel Core i7-7500U was between 9.8% to 18.7% faster than the Dell XPS 13 9350 with the Intel Core i7-6500U processor, which is pretty amazing! The Intel Core i7-7500U was 9.8% faster in WebXPRT, 12.4% faster in Kraken, 16.6% faster in JetStream and an impressive 18.7% faster in Octane. When it comes to online browsing it is clear that Kaby Lake is superior and should provide a noticeable performance increase over the last generation processors, so if you are upgrading a few your old system you’ll be seeing huge gains on sites that are HTML5 and JavaScript heavy.

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  • Alfred Zanini

    I have an option for an i7 6500u model for 940$ us. Worth it?

  • YOUDIEMOFO

    Not sure if I’m just seeing it wrong, but would these scores not be the same if core “clock speeds” were the same…!? I get that there is more performance to be had on the kaby, but this would not be enough for me to jump ship for such a small incremental performance increase.

  • Spineman

    Great review. Thanks. Intel should have just waited on this one. Not enough to warrant an upgrade. They need to acquire Nvidia and get some real graphics pros on board. Yawn! It will hopefully lower the Surface Pro 4 pricing even more as rich boys upgrade to this “power” processor. lol.

    • AdamBoy64

      True, if you’re already using an i7-6500u there’s not much of a jump.

      It’s good for those in the market though to be able to compare. I was considering a 6500u as it didn’t seem much different, but it seems like there’s more of a jump than I expected.

  • Greg Zeng

    Running on battery makes the upgrade very worthwhile. These improvements should also be visible on other products with the new CPU.

  • Patrick DuChene

    Great article. Its not very often we see such thorough information. Thanks for that. Helps clarify a bit more of the true benefits on Kaby Lake over Skylake.
    Nice work

  • anon

    10% more performance for 10% higher clock speed? If scores are not normalized its difficult to compare when products are sooo similar.
    The performance boost could be alleged to a higher absolute performance, but its not.

    Also in the power comsumption chart, HEV (page 8) decoding power use seems missleading. You cannot use a line graph to compare different usages of power because the lines between the points mean a progression which is non existant. Should be a bar chart as well.

    I like very much legit, and I think you should pay attention to this kind of details.

    • anon

      The claim is the 14nm+ process achieves a higher clock with equivalent TDP.

    • Nathan Kirsch

      I get your point on the chart, so I updated it! Thanks for the feedback and we always strive to make the reviews as good as possible!

      • anon

        This kind of feedback is what makes legit what it is. Kudos for you.

  • Earl Keim

    Excellent article, Nathan. Nice to see one can have a long flight overseas, etc. and never run out of battery.