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 Combined Score

Encoding: 7-Zip Compression

Encoding: 7-Zip Decompression

At the request of a few users, we've gone back through our saved benchmark data and pulled out compression/decompression numbers for 7-zip. AMD clearly makes a win here in decompression by a long way.

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

WinRAR encoding is another test that doesn't scale up especially well with thread counts. After only a few threads, most of its MT performance gains have been achieved. Which isn't a help to Threadripper, and is outright a hiderence in Creator Mode.

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: 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)

In the HQ H264 test, AMD pushes ahead with both the processors, while SMT-off severely limits the 1950X due to the lack of SMT threads. As we move to HEVC though, the 1950X and 7900X clash on performance.

Benchmarking Performance: CPU Web Tests Benchmarking Performance: CPU Office Tests
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  • Vorl - Thursday, August 10, 2017 - link

    the answer to both of you is that "this is a High end PC processor, not a workstation CPU, and not a server CPU. That was clearly covered at the start of the article.

    If you want raw number crunching info, there will be other sites that are going to have those reviews, and really, maybe anandtech will review it in that light since it really is such a powerful CPU in another review for server stuff.

    Also, there is a LOT of value in having a standardized set of tests. Even if a few tests here and there are no longer valuable like PDF opening, the same tests being used across the board are important for BENCH. you can't compare products if you aren't using the same tools.

    Unfortunately AMD is ahead of the curve currently with massive SMP being given to normal consumers now at a reasonable price. It will take a little time for dev's to catch up and really make use of this amazing CPU.

    With the processing power in a CPU like this imagine the game mechanics that can be created and used, For those of us that are more interested in making this a reasonably priced workstation/server build for VMs etc, cool for us, but that isn't where this is being marketed, and it's not really fair to jump all over the reviewer for it.
  • Zstream - Thursday, August 10, 2017 - link

    Utter rubbish. This CPU is designed for a workstation build. Some a product labeled Xeon is a workstation CPU, but this isn't?
  • mapesdhs - Friday, August 11, 2017 - link

    Yeah, TR doesn't really look like something that's massively aimed at gamers, it has too many capabilities and features which gamers wouldn't be interested in.
  • pm9819 - Friday, August 18, 2017 - link

    AMD themselves call it a consumer cpu. Is Intel paying them as well
  • Lolimaster - Friday, August 11, 2017 - link

    It's a HEDT/workstation, a year ago people called Workstation a dual Xeon 8 cores, which a sole 1950X replicates.

    Intel draws a line not supporting ECC, AMD supports ECC in all their main cpu's server or not all the way back to Athlon 64.

    16cores/32threads, ECC, 64 pci-e lanes, upgrade path to 32cores/64threads with zen3. Smells Workstation to me.

    Another thing is server cpu's which EPYC is, with features tailored to it, like a massive core count with low clock speeds to maximize efficiency and damn expensive mobos without any gamerish gizmo, just think to put on building without looking at net. TR can do a bit of that too, but optimized to an all around performance and budget friendly.
  • Ian Cutress - Thursday, August 10, 2017 - link

    Dan sums it up. Some of these tests are simply check boxes - is it adequate enough.

    Some people do say that an automated suite isn't the way to do things: unfortunately without spending over two months designing this script I wouldn't have time for nearly as much data or to test nearly as many CPUs. Automation is a key aspect to testing, and I've spent a good while making sure tests like our Chromium Compile can be process consistent across systems.

    There's always scope to add more tests (my scripts are modular now), if they can be repeatable and deterministic, but also easy to understand in how they are set up. Feel free to reach out via email if you have suggestions.
  • Johan Steyn - Thursday, August 10, 2017 - link

    Ian, I understand that you see them as checkboxes, but this is not a normal CPU John doe is going to buy. It has a very specific audience and I feel you are missing that audience badly. I guy that buys this to use for rendering or 3Dstudio Max, is not going to worry about games. Yes, it would be a great bonus to also be OK at it. Other sittes even did tests of running rendering as well as play games at the same time. TR shined like a star against Intel. This is actually something that might happen in real life. A guy could begin a render and then while waiting, decide to play a game.

    I would not buy TR to open pdf's, would I?
  • Ian Cutress - Thursday, August 10, 2017 - link

    No, but you open things like IDEs and Premiere. A PDF test is a gateway test in that regard with an abnormally large input. When a workstation is not crunching hard, it's being used to navigate through programs with perhaps the web and documents in tow where the UX is going to be indicative of something like PDF opening.
  • Lolimaster - Friday, August 11, 2017 - link

    Including useless benchs not only you waste target audience time, you too having to write and upload images from that useless benchs instead of making the article more interesting.

    How about a "the destroyer for HEDT/Workstion", a typical productivy load + some gaming, out of a sudden people will get TWICE the cpu resources, they can do things they couldn't before on the same machine.

    They could get a dual socket mobo with 2x10c Xeons paying the hefty premium with pathetic clock speeds if they wante to game a bit while doing work, TR fixed that, with mass consumer type of gaming performance while reducing the multicore costs by more than half (cores counts + ECC support without paying intel tax).
  • Lolimaster - Friday, August 11, 2017 - link

    And that audience few months ago was limited to do their productivity thing with 6-8 cores or 10 paying the huge intel tax, probably they couldn't game without hurting other things and had a 2 secondary PC for killing time.

    With TR and the massive 16 core count they can finally do all of that off a single PC or focus the entire powerhorse when they need (leaving things do work during their sleep).

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