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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  • bigboxes - Tuesday, June 12, 2018 - link

    I run to my 4790K to check for HSF. Who would have thought it had one in the box. No one buys that processor to use the stock HSF. Reply
  • mkaibear - Tuesday, June 12, 2018 - link

    I did. Worked fine. Reply
  • Marlin1975 - Monday, June 11, 2018 - link

    My 3570k came with a heatsink.

    Also in the AMD Ryzen reviews here it was pointed out there was no heatsink for the unlocked/higher chips. Yet in this review it was not and they did not use a regular/more common heatsink, but a very costly and less used water cooler.
    Reply
  • npz - Monday, June 11, 2018 - link

    Ok fair enogh, but the stock heatsink & fan Intel uses are crap so I don't think reviewers should be using them for actual benchmarks anyways as it will affect turbo speeds. Reply
  • Marlin1975 - Monday, June 11, 2018 - link

    That's the point. You use what they give to show its real performance. If it has a negative affect that is on the maker, not the user/reviewer.

    That way when you compare different CPUs they all have the same standard cooler so its apples to apples review.
    Reply
  • Inteli - Monday, June 11, 2018 - link

    Surely if you want to compare CPUs apples to apples, you'd want to use the same cooler for all of them (across brands, not just within), so the CPU is what's actually being tested. Why would only a stock cooler give "real performance" anyways? Are you saying the CLC on my 4690k is giving me "fake performance"?

    Not that it matters, because Intel didn't include a stock heat sink with this CPU.

    I would rather see CPUs hooked up to an absolutely overkill cooling setup (maybe a water chiller? :^) ) on stock clocks so the CPU can perform its absolute best.
    Reply
  • npz - Monday, June 11, 2018 - link

    It's real performance is with an aftermarket heatsink anyways which is why Intel stopped providing them for the K series after Haswell. As long as you use a cooler which will not impede the performance of the cpu, then the cpu benchmarks are all apples to apples comparison. It was so bad it would cause the cpus to throttle with certain heavy loads and you can forget about overclocking, which kills the point of the K-series.

    It will be an absolute disservice if Anandtech benchmarked with the stock heatsink. The only exception is Ryzen, especially Ryzen 2's wraith max heatsink which rivals high end aftermarket cooling
    Reply
  • cmdrdredd - Monday, June 11, 2018 - link

    ok but in the real world nobody is buying a K series CPU and running it stock. Reply
  • mkaibear - Tuesday, June 12, 2018 - link

    I do! (I intended to downclock it but it didn't downclock very well so I just left it at defaults. Stock cooler too - 2500K then 4790K) Reply
  • MDD1963 - Tuesday, June 26, 2018 - link

    Untrue, if the CPU is already at fairly high temps stock, going 10-15C higher in temps to gain 100 more MHz and 2 more FPS in a game seems ludicrous.... Reply

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