CPU Performance: Encoding Tests

With the rise of streaming, vlogs, and video content as a whole, encoding and transcoding tests are becoming ever more important. Not only are more home users and gamers needing to convert video files into something more manageable, for streaming or archival purposes, but the servers that manage the output also manage around data and log files with compression and decompression. Our encoding tasks are focused around these important scenarios, with input from the community for the best implementation of real-world testing.

All of our benchmark results can also be found in our benchmark engine, Bench.

Handbrake 1.1.0: Streaming and Archival Video Transcoding

A popular open source tool, Handbrake is the anything-to-anything video conversion software that a number of people use as a reference point. The danger is always on version numbers and optimization, for example the latest versions of the software can take advantage of AVX-512 and OpenCL to accelerate certain types of transcoding and algorithms. The version we use here is a pure CPU play, with common transcoding variations.

We have split Handbrake up into several tests, using a Logitech C920 1080p60 native webcam recording (essentially a streamer recording), and convert them into two types of streaming formats and one for archival. The output settings used are:

  • 720p60 at 6000 kbps constant bit rate, fast setting, high profile
  • 1080p60 at 3500 kbps constant bit rate, faster setting, main profile
  • 1080p60 HEVC at 3500 kbps variable bit rate, fast setting, main profile

Handbrake 1.1.0 - 720p60 x264 6000 kbps FastHandbrake 1.1.0 - 1080p60 x264 3500 kbps FasterHandbrake 1.1.0 - 1080p60 HEVC 3500 kbps Fast

7-zip v1805: Popular Open-Source Encoding Engine

Out of our compression/decompression tool tests, 7-zip is the most requested and comes with a built-in benchmark. For our test suite, we’ve pulled the latest version of the software and we run the benchmark from the command line, reporting the compression, decompression, and a combined score.

It is noted in this benchmark that the latest multi-die processors have very bi-modal performance between compression and decompression, performing well in one and badly in the other. There are also discussions around how the Windows Scheduler is implementing every thread. As we get more results, it will be interesting to see how this plays out.

Please note, if you plan to share out the Compression graph, please include the Decompression one. Otherwise you’re only presenting half a picture.

7-Zip 1805 Compression7-Zip 1805 Decompression7-Zip 1805 Combined

WinRAR 5.60b3: Archiving Tool

My compression tool of choice is often WinRAR, having been one of the first tools a number of my generation used over two decades ago. The interface has not changed much, although the integration with Windows right click commands is always a plus. It has no in-built test, so we run a compression over a set directory containing over thirty 60-second video files and 2000 small web-based files at a normal compression rate.

WinRAR is variable threaded but also susceptible to caching, so in our test we run it 10 times and take the average of the last five, leaving the test purely for raw CPU compute performance.

WinRAR 5.60b3

AES Encryption: File Security

A number of platforms, particularly mobile devices, are now offering encryption by default with file systems in order to protect the contents. Windows based devices have these options as well, often applied by BitLocker or third-party software. In our AES encryption test, we used the discontinued TrueCrypt for its built-in benchmark, which tests several encryption algorithms directly in memory.

The data we take for this test is the combined AES encrypt/decrypt performance, measured in gigabytes per second. The software does use AES commands for processors that offer hardware selection, however not AVX-512.

AES Encoding

CPU Performance: Office Tests CPU Performance: Web and Legacy Tests
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  • Ryan Smith - Friday, October 19, 2018 - link

    For once, we're going to do the first comment!

    (What does everyone think of the article, and Intel's new CPU?)
    Reply
  • DanNeely - Friday, October 19, 2018 - link

    [thoughts] Reply
  • Ryan Smith - Friday, October 19, 2018 - link

    Okay. That's well-played... Reply
  • nathanddrews - Friday, October 19, 2018 - link

    My take on your data: worth it if you have something a lot faster than a GTX 1080 since it looks GPU-bound for most of the gaming benchmarks at med-high resolutions. 2080Ti users and SLI users will probably get the most out of it from a gaming perspective.

    Skylake-X with that AVX512 perf, though...
    Reply
  • Ian Cutress - Friday, October 19, 2018 - link

    One issue we always have every generation is sourcing GPUs. Going up to a vendor and asking for 3-4 cards is typically a no go. This is why I've done a range of resolutions/settings for each game, so cover everyone who wants to see CPU limited scenarios, and others that might be more real-world oriented. Reply
  • 3dGfx - Friday, October 19, 2018 - link

    Ian, how can you claim 9900k is the best when you never tested the HEDT parts in gaming? Making such claims really makes anandtech look bad because it sounds like a sales pitch and you omitted that entire HEDT platform from the results. I hope you fix this oversight so skyX can be compared properly to 9900K and the upcoming skyX refresh parts! And of course, AMD HEDT parts.

    There was supposed to be a part2 to the i9-7980XE review and it never happened, so gaming benchmarks were never done, and i9-7940X and i9-7920X weren't tested either. HEDT is a gaming platform since it has no ECC support and isn't marketed as a workstation platform.

    IF intel says the 8-core part is now "the best" you ought to be testing their flagship HEDT parts which also were claimed to be the best.
    Reply
  • 3dGfx - Friday, October 19, 2018 - link

    p.s. It would be nice if you can also do Zbrush benchmarking for all the cpu reviews. it runs entirely on the CPU with no GPU accelerations and it comes with a benchmark test/score built into the app. Zbrush is a very common 3d app these days. Also its useful to mention in a review how many polygons or subdivision levels can be displayed in zbrush by the cpu before you see a slowdown. thanks. Reply
  • Ryan Smith - Friday, October 19, 2018 - link

    "Ian, how can you claim 9900k is the best when you never tested the HEDT parts in gaming?"

    Beg your pardon? We have the 7900X, 7820X, and a couple of Threadrippers for good measure. Past that, the farther up the ladder you go in Intel HEDT, the lower the turbo clockspeeds go, which diminishes gaming performance.
    Reply
  • 3dGfx - Friday, October 19, 2018 - link

    sorry, I was mainly just looking for the flagship products and they have no gaming benches at all, 2990WX, 2950X, and 7980XE, these top end "best" parts have no gaming benchmarks. I wanted to see how they compare to the 9900k or to the refreshed skylakeX which will come out. if for example someone wants to buy a chip that is good for both raytrace rendering and games (game developers, etc.) they will want to see all these benches. Reply
  • Makaveli - Friday, October 19, 2018 - link

    Why would you buy a 2990WX, 2950X, and 7980XE

    to play games on?
    Reply

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