CPU Performance, Short Form

For our motherboard reviews, we use our short form testing method. These tests usually focus on if a motherboard is using MultiCore Turbo (the feature used to have maximum turbo on at all times, giving a frequency advantage), or if there are slight gains to be had from tweaking the firmware. We put the memory settings at the CPU manufacturers suggested frequency, making it very easy to see which motherboards have MCT enabled by default.

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.

Encoding: WinRAR 5.40

WinRAR is often memory bound when there are plenty of cores, and we see that here. The jump from 3200 to 3600 is only 1.2 seconds for 400 MT/s, but up to DDR4-5000 gives in total a 3.8 second boost for +1800 MT/s, which is almost a linear scaling improvement.

DigiCortex 1.20: Sea Slug Brain Simulation

This benchmark was originally designed for simulation and visualization of neuron and synapse activity, as is commonly found in the brain. The software comes with a variety of benchmark modes, and we take the small benchmark which runs a 32k neuron / 1.8B synapse simulation, equivalent to a Sea Slug.

Example of a 2.1B neuron simulation

We report the results as the ability to simulate the data as a fraction of real-time, so anything above a ‘one’ is suitable for real-time work. Out of the two modes, a ‘non-firing’ mode which is DRAM heavy and a ‘firing’ mode which has CPU work, we choose the latter. Despite this, the benchmark is still affected by DRAM speed a fair amount.

DigiCortex can be downloaded from http://www.digicortex.net/

System: DigiCortex 1.20 (32k Neuron, 1.8B Synapse)

Similarly with DigiCortex, there are gains to be had by increasing the memory frequency. Most of the gain here happens between 3200 and 3600 though, with only a small jump going further to DDR4-5000.


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

All three of our video transcoding tests saw small minor gains, although not substantial enough to justify the cost of the kit.

Blender 2.79b: 3D Creation Suite

A high profile rendering tool, Blender is open-source allowing for massive amounts of configurability, and is used by a number of high-profile animation studios worldwide. The organization recently released a Blender benchmark package, a couple of weeks after we had narrowed our Blender test for our new suite, however their test can take over an hour. For our results, we run one of the sub-tests in that suite through the command line - a standard ‘bmw27’ scene in CPU only mode, and measure the time to complete the render.

Blender can be downloaded at https://www.blender.org/download/

Rendering: Blender 2.79b

Blender's differences are within the margin of error.

POV-Ray 3.7.1: Ray Tracing

The Persistence of Vision ray tracing engine is another well-known benchmarking tool, which was in a state of relative hibernation until AMD released its Zen processors, to which suddenly both Intel and AMD were submitting code to the main branch of the open source project. For our test, we use the built-in benchmark for all-cores, called from the command line.

POV-Ray can be downloaded from http://www.povray.org/

Rendering: POV-Ray 3.7.1

POV-Ray is also within the margin of error.


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.

Encoding: 7-Zip

7zip's benchmark is one that shows a sizeable bump going up to DDR4-5000.

3D Particle Movement v2.1: Brownian Motion

Our 3DPM test is a custom built benchmark designed to simulate six different particle movement algorithms of points in a 3D space. The algorithms were developed as part of my PhD., and while ultimately perform best on a GPU, provide a good idea on how instruction streams are interpreted by different microarchitectures.

A key part of the algorithms is the random number generation – we use relatively fast generation which ends up implementing dependency chains in the code. The upgrade over the naïve first version of this code solved for false sharing in the caches, a major bottleneck. We are also looking at AVX2 and AVX512 versions of this benchmark for future reviews.

For this test, we run a stock particle set over the six algorithms for 20 seconds apiece, with 10 second pauses, and report the total rate of particle movement, in millions of operations (movements) per second. We use a non-AVX version here.

3DPM v2.1 can be downloaded from our server: 3DPMv2.1.rar (13.0 MB)

System: 3D Particle Movement v2.1

As per usual, our 3DPM test seems to favor slow memory. We saw this in other reviews of high speed memory, although this time with high speed DDR4 on AMD, the difference isn't too much and can be considered within the margin of error.

Overclocking the Infinity Fabric Gaming Performance
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  • TheinsanegamerN - Tuesday, January 28, 2020 - link

    While funny as a "what if" scenario, realistically nobody is going to pair a $150 APU with $1200 memory. AMD APUs likely couldnt push this stuff to 5000mhz anyway, hell most intel chips would struggle with 5000mhz.
  • 29a - Wednesday, January 29, 2020 - link

    The only thing this memory would benefit is an APU, it would be nice just to see what it would do. Nobody is going to buy this memory for any reason other than bragging rights so they might as well had tested it with a APU.
  • TomWomack - Monday, January 27, 2020 - link

    Is there any way you could run Prime95 on this? It is spectacularly memory limited (on an i9-7940X for the largest FFT sizes it is barely 50% faster on 14 cores than on 4), so a best-case test.
  • Alistair - Monday, January 27, 2020 - link

    Seems like there is no point to this when buying a Threadripper and getting more memory channels gets you better results for less money.
  • SanX - Monday, January 27, 2020 - link

    Never seen on any website comparison of dual channel versus quad channel versus 6-channel versus 8-channel memory architectures. Instead all testers pump and pump and pump for years everyone know barely useful MHz because memory companies pay for the ad. You forgot 10% and even 20% difference in PC computing (and 2x in supercomputing) is essentially equal to ZERO difference?

    Take simple Gauss elimination Ax=B test from Intel XML library with AVX512 and compare different Intel processors, other tests and clear this question finally. May be even AMD processors which do not support ACX512 will shine here due to memory bandwidth.
  • eastcoast_pete - Monday, January 27, 2020 - link

    Really puzzled by who would buy this outrageously expensive memory? The only use scenario I can imagine is in high-speed trading, where companies pay millions to be a few milliseconds ahead (for example, by getting their own fiber optic links to the CBE), but not sure if anyone in that field uses Ryzen systems.
  • deneb - Tuesday, January 28, 2020 - link

    This test would be great with threadrippers! Especially the 64 core.
  • ManuelDiego - Tuesday, January 28, 2020 - link

    Do these high speed RAM kits work at the advertised speeds when used with a Ryzen 3xxx series but on a B350 board? I know the memory controller is on the die, but i assume the traces on the board may also be a factor.
  • Maxiking - Tuesday, January 28, 2020 - link

    Could you please tell what sane person test impact of RAMS with AMDslow cpus and slow gpus? 5700xt? really?

    Did you outsource reviews to India?
  • catavalon21 - Tuesday, January 28, 2020 - link

    Feel free to jump right in and write a better one.

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