Benchmarking Performance: CPU Encoding Tests

One of the interesting elements on modern processors is encoding performance. This includes encryption/decryption, as well as video transcoding from one video format to another. In the encrypt/decrypt scenario, this remains pertinent to on-the-fly encryption of sensitive data - a process by which more modern devices are leaning to for software security. Video transcoding as a tool to adjust the quality, file size and resolution of a video file has boomed in recent years, such as providing the optimum video for devices before consumption, or for game streamers who are wanting to upload the output from their video camera in real-time. As we move into live 3D video, this task will only get more strenuous, and it turns out that the performance of certain algorithms is a function of the input/output of the content.

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

7-Zip 9.2

One of the freeware compression tools that offers good scaling performance between processors is 7-Zip. It runs under an open-source licence, is fast, and easy to use tool for power users. We run the benchmark mode via the command line for four loops and take the output score.

Encoding: 7-Zip Combined Score

Encoding: 7-Zip Compression

Encoding: 7-Zip Decompression

Again, trading blows with the 8700K, but falling behind a little bit.

WinRAR 5.40

For the 2017 test suite, we move to the latest version of WinRAR in our compression test. WinRAR in some quarters is more user friendly that 7-Zip, hence its inclusion. Rather than use a benchmark mode as we did with 7-Zip, here we take a set of files representative of a generic stack (33 video files in 1.37 GB, 2834 smaller website files in 370 folders in 150 MB) of compressible and incompressible formats. The results shown are the time taken to encode the file. Due to DRAM caching, we run the test 10 times and take the average of the last five runs when the benchmark is in a steady state.

Encoding: WinRAR 5.40

The 8086K takes another benchmark sitting behind the 8700K.

AES Encoding

Algorithms using AES coding have spread far and wide as a ubiquitous tool for encryption. Again, this is another CPU limited test, and modern CPUs have special AES pathways to accelerate their performance. We often see scaling in both frequency and cores with this benchmark. We use the latest version of TrueCrypt and run its benchmark mode over 1GB of in-DRAM data. Results shown are the GB/s average of encryption and decryption.

Encoding: AES

Under AES encoding we get literally identical results.

HandBrake v1.0.2 H264 and HEVC: link

As mentioned above, video transcoding (both encode and decode) is a hot topic in performance metrics as more and more content is being created. First consideration is the standard in which the video is encoded, which can be lossless or lossy, trade performance for file-size, trade quality for file-size, or all of the above can increase encoding rates to help accelerate decoding rates. Alongside Google's favorite codec, VP9, there are two others that are taking hold: H264, the older codec, is practically everywhere and is designed to be optimized for 1080p video, and HEVC (or H265) that is aimed to provide the same quality as H264 but at a lower file-size (or better quality for the same size). HEVC is important as 4K is streamed over the air, meaning less bits need to be transferred for the same quality content.

Handbrake is a favored tool for transcoding, and so our test regime takes care of three areas.

Low Quality/Resolution H264: Here we transcode a 640x266 H264 rip of a 2 hour film, and change the encoding from Main profile to High profile, using the very-fast preset.

Encoding: Handbrake H264 (LQ)

High Quality/Resolution H264: A similar test, but this time we take a ten-minute double 4K (3840x4320) file running at 60 Hz and transcode from Main to High, using the very-fast preset.

Encoding: Handbrake H264 (HQ)

HEVC Test: Using the same video in HQ, we change the resolution and codec of the original video from 4K60 in H264 into 4K60 HEVC.

Encoding: Handbrake HEVC (4K)

Benchmarking Performance: CPU Rendering Tests Benchmarking Performance: CPU Office Tests
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  • SanX - Tuesday, June 12, 2018 - link

    They aren't making that much profit off each chip? If they aren't making huge profits then all mobile chip factories lose money by selling the same transistor count processors like the one in Apple or Samsung phones for just $25 Reply
  • Hxx - Thursday, June 14, 2018 - link

    who said binned chips? that would imply added costs. Did intel make some official statement? There is now way the 8086ks are binned chips. Intel clocked the 4.7ghz core to 5ghz on a 8700k. That's doable on any cooler you dont need a binned chip for that. Perhaps additional testing was done to make sure they're stable but there is no way intel cherry picked these chips. Reply
  • AutomaticTaco - Monday, June 11, 2018 - link

    Okay. So people make purchases. So be it. If it's not better you can purchase something else. And others can make up their own minds. Reply
  • LemmingOverlord - Monday, June 11, 2018 - link

    No real explanation why the 8086K underperforms the 8700K in multithreaded CPU tests, then. Considering they are rated the same at more than dual-core usage I can't really understand.

    Utter waste of money, that's for sure
    Reply
  • Ryan Smith - Monday, June 11, 2018 - link

    As noted in the testbed section, this wasn't run on our standard testbed since Ian didn't have it with him in Taiwan. Every motherboard is different, sometimes infuriatingly so. Reply
  • npz - Monday, June 11, 2018 - link

    DPC latency? Speedstep / clookspeed ramp up differences? Reply
  • Ryan Smith - Monday, June 11, 2018 - link

    They all tend to implement uncore clocking differently, even among different products within the same manufacturer. Reply
  • AsParallel - Monday, June 11, 2018 - link

    Because ASRock and configuration. ASRock boards are a pain to dial in, and sometimes their firmware is an immovable object. Reply
  • artifex - Monday, June 11, 2018 - link

    Waiting for the i7-80286K, so I can hit the turbo button Reply
  • TheinsanegamerN - Monday, June 18, 2018 - link

    I'm waiting for the AMD 5x86 4700x that will slot into an intel motherboard. Reply

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