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: link

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

WinRAR 5.40: link

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

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

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: He 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 Web Tests Benchmarking Performance: CPU Office Tests
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  • Ian Cutress - Thursday, July 27, 2017 - link

    So one, overclocking is for a later review. Can't pass judgement on something that's not been tested. Other sites have certainly had more time (I get my chips 3-4 days after the US sites do, as I'm not in the US). This review was being written as the deadline passed, and is still being tested. It's not written it weeks in advance, with time to tooth comb and perfect every sentence. I've pulled an all-nighter to get to where it is now, even with some of the missing tests which are still being run. So when you say 'does not tell the full story', well not everything has been tested. I've made that abundantly clear several times in the review.

    Two, these chips are filling in volume at the lower end, especially in B2B where nothing is overclocked. You want me to sing the praises of a feature that we haven't had time to test for a product that's going to fill a market that won't use that feature, even though some in a different market might? If/when we get around to a pt2, I'll focus more on the enthusiast perspective. If you've read most of our CPU reviews over the past two years, most of the emphasis usually goes on out-of-the-box performance anyway.

    Third, on the very first page, in black and white, it states 'The big upswing for AMD here is going to be overclocking, and potentially push the Ryzen 3 CPUs through to compete with the next one up the stack depending on stock performance.'
    Reply
  • vanilla_gorilla - Thursday, July 27, 2017 - link

    Ian, first off, great review as always and thank you. Second, you should just write up a large FAQ/disclaimer for your reviews that you can just link in the article and in comment replies. The same questions and complaints come up over and over, you've got to be tired of addressing them. Reply
  • DrKlahn - Thursday, July 27, 2017 - link

    As I said, I understand it is for a later review. I also understand that a lot of these chips will never be overclocked. I don't want you to sing the praises of anything. I want a caveat in the conclusion that this potential exists and it impacts the value proposition. History has shown us (think the initial Radeon 290 reviews) that the first impression sticks with the reader regardless of how a product fares in the future. I have zero issues with your conclusion as an out of the box evaluation and appreciate your efforts. However your conclusion should have a caveat attached to it to call attention to everything the chip offers. Reply
  • mikato - Thursday, July 27, 2017 - link

    I think that's fair. Here's another vote. Reply
  • Gothmoth - Thursday, July 27, 2017 - link

    just saw your reply.... and i count on that. :-) Reply
  • Gothmoth - Thursday, July 27, 2017 - link

    i hope anandtech will test the overcloked ryzen against the locked intels.
    but then... is amd paying enough fot advertising on anandtech..... :)
    Reply
  • willis936 - Thursday, July 27, 2017 - link

    There is an R7 review and now an R3 review but nothing on the most interesting segment: R5. I've seen multiple other sites say that the R5 segment is where AMD is the clear winner for all workloads. Go up or down $50 and Intel makes more sense for gaming. Reply
  • MrCommunistGen - Thursday, July 27, 2017 - link

    http://www.anandtech.com/show/11244/the-amd-ryzen-... Reply
  • willis936 - Thursday, July 27, 2017 - link

    I wonder why that doesn't show up when using anandtech's search feature.

    http://www.anandtech.com/SearchResults?q=R5
    Reply
  • MrCommunistGen - Thursday, July 27, 2017 - link

    This article doesn't show up when you search R3, and the 1800X article doesn't show up if you search R7.

    AMD isn't actually using R3, R5, and R7 as part of their branding for Ryzen, though I guess at least some are using that shorthand. The R3/5/7 are being used for GPU branding for some generations of discrete cards and APUs.

    If you look at the top of the article underneath the author's name, you'll see what tags the article has (and thus search terms) that you could use to find it in the future. Looks like "Ryzen" or "Ryzen 3" "Ryzen 5" and "Ryzen 7" are good terms.

    On the other hand, I found the link I posted above by going to Google and typing:
    anandtech 1600x review
    Reply

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