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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  • Total Meltdowner - Sunday, October 21, 2018 - link

    Those typoes..

    "Good, F U foreigners who want our superior tech."
  • muziqaz - Monday, October 22, 2018 - link

    Same to you, who still thinks that Intel CPUs are made purely in USA :D
  • Hifihedgehog - Friday, October 19, 2018 - link

    What do I think? That it is a deliberate act of desperation. It looks like it may draw more power than a 32-Core ThreadRipper per your own charts.

    https://i.redd.it/iq1mz5bfi5t11.jpg
  • AutomaticTaco - Saturday, October 20, 2018 - link

    Revised
    https://www.anandtech.com/show/13400/intel-9th-gen...

    The motherboard in question was using an insane 1.47v
    https://twitter.com/IanCutress/status/105342741705...
    https://twitter.com/IanCutress/status/105339755111...
  • edzieba - Friday, October 19, 2018 - link

    For the last decade, you've had the choice between "I want really fast cores!" and "I want lots of cores!". This is the 'now you can have both' CPU, and it's surprisingly not in the HEDT realm.
  • evernessince - Saturday, October 20, 2018 - link

    It's priced like HEDT though. It's priced well into HEDT. FYI, you could have had both of those when the 1800X dropped.
  • mapesdhs - Sunday, October 21, 2018 - link

    I noticed initially in the UK the pricing of the 9900K was very close to the 7820X, but now pricing for the latter has often been replaced on retail sites with CALL. Coincidence? It's almost as if Intel is trying to hide that even Intel has better options at this price level.
  • iwod - Friday, October 19, 2018 - link

    Nothing unexpected really. 5Ghz with "better" node that is tuned for higher Frequency. The TDP was the real surprise though, I knew the TDP were fake, but 95 > 220W? I am pretty sure in some countries ( um... EU ) people can start suing Intel for misleading customers.

    For the AVX test, did the program really use AMD's AVX unit? or was it not optimised for AMD 's AVX, given AMD has a slightly different ( I say saner ) implementation. And if they did, the difference shouldn't be that big.

    I continue to believe there is a huge market for iGPU, and I think AMD has the biggest chance to capture it, just looking at those totally playable 1080P frame-rate, if they could double the iGPU die size budget with 7nm Ryzen it would be all good.

    Now we are just waiting for Zen 2.
  • GreenReaper - Friday, October 19, 2018 - link

    It's using it. You can see points increased in both cases. But AMD implemented AVX on the cheap. It takes twice the cycles to execute AVX operations involving 256-bit data, because (AFAIK) it's implemented using 128-bit registers, with pairs of units that can only do multiplies or adds, not both.

    That may be the smart choice; it probably saves significant space and power. It might also work faster with SSE[2/3/4] code, still heavily used (in part because Intel has disabled AVX support on its lower-end chips). But some workloads just won't perform as well vs. Intel's flexible, wider units. The same is true for AVX-512, where the workstation chips run away with it.

    It's like the difference between using a short bus, a full-sized school bus, and a double decker - or a train. If you can actually fill the train on a regular basis, are going to go a long way on it, and are willing to pay for the track, it works best. Oh, and if developers are optimizing AVX code for *any* CPU, it's almost certainly Intel, at least first. This might change in the future, but don't count on it.
  • emn13 - Saturday, October 20, 2018 - link

    Those AVX numbers look like they're measuing something else; not just AVX512. You'd expect performance to increase (compared to AVX256) by around 50%, give or take quite a margin of error. It should *never* be more than a factor 2 faster. So ignore AMD; their AVX implementation is wonky, sure - but those intel numbers almost have to be wrong. I think the baseline isn't vectorized at all, or something like that - that would explain the huge jump.

    Of course, AVX512 is fairly complicated, and it's more than just wider - but these results seem extraordinary; and there' just not enough evidence the effect is real, not just some quirk of how the variations were compiled.

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