The AMD Threadripper 2990WX 32-Core and 2950X 16-Core Review
by Dr. Ian Cutress on August 13, 2018 9:00 AM ESTHEDT Benchmarks: Encoding Tests
With the rise of streaming, vlogs, and video content as a whole, encoding and transcoding tests are becoming ever more important. Not only are more home users and gamers needing to convert video files into something more manageable, for streaming or archival purposes, but the servers that manage the output also manage around data and log files with compression and decompression. Our encoding tasks are focused around these important scenarios, with input from the community for the best implementation of real-world testing.
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
Video encoding is always an interesting mix of multi-threading, memory latency, and compute. The Core i9, with AVX2 instructions, sets a commanding lead in all three tests. The AMD processors seem to fluctuate a bit, with the 1950X and 2700X being the best of the bunch. Unfortunately we didn’t get 2950X results in our initial runs, but I would expect it to be competitive with the Core i9 for sure, given where the 1950X is. However the 2990WX does fall behind a bit.
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.
Oh boy, this was an interesting set of tests. When we initially published this review, without commentary, the compression graph with the 2990WX at the bottom was shared around social media like crazy, trying to paint a picture of why AMD performance isn’t great. It was also used in conjuction with Phoronix’s tests, that showed a much better picture on Linux.
But what confuses me is that almost no-one also posted the decompression graph. Here AMD’s 32-core processors take a commanding lead, with the 16/18-core parts being the best of the rest.
If you plan to share out the Compression graph, please include the Decompression one. Otherwise you’re only presenting half a picture.
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.
A set of high frequency cores and good memory is usually beneficial, but sometimes some more memory bandwidth and lower latency helps. At the top is AMD’s R7 2700X, with the Intel 10-core just behind. I’m surprised not to see the 8700K in there, perhaps its six cores is not enough. But the higher core count AMD parts struggle to gain traction here, with the 32-core parts taking some sweet time to finish this test.
AES Encryption: File Security
A number of platforms, particularly mobile devices, are now offering encryption by default with file systems in order to protect the contents. Windows based devices have these options as well, often applied by BitLocker or third-party software. In our AES encryption test, we used the discontinued TrueCrypt for its built-in benchmark, which tests several encryption algorithms directly in memory.
The data we take for this test is the combined AES encrypt/decrypt performance, measured in gigabytes per second. The software does use AES commands for processors that offer hardware selection, however not AVX-512.
Normally we see this test go very well when there are plenty of cores, but it would seem that the bi-modal nature of the cores and memory controllers in the 2990WX gives a poor result. The EPYC 7601, with eight memory controllers, does a better job, however the 1950X wins here. The 2950X, where all cores have a similar access profile, scores top here, well above Intel’s 18-core Core i9.
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MattZN - Monday, August 20, 2018 - link
If its idling at 80-85W that implies you are running the memory fabric at 2800 or 3000MHz or higher. Try running the fabric at 2666MHz.Also keep in mind that a 2990WX running all 64 threads with a memory-heavy workload is almost guaranteed to be capped out by available memory bandwidth, so there's no point overclocking the CPU for those sorts of tests. In fact, you could try setting a lower PPT limit for the CPU core along with running the memory at 2666... you can probably chop 50-100W off the power consumption without changing the test results much (beyond the difference between 3000 and 2666).
It's a bit unclear what you are loading the threads with. A computation-intensive workload will not load down the fabric much, meaning power will shift to the CPU cores and away from the fabric. A memory-intensive workload, on the otherhand, will stall-out the CPU cores (due to hitting the memory bandwidth cap that 4 memory channels gives you), and yet run the fabric at full speed. This is probably why you are seeing the results you are seeing. The CPU cores are likely hitting so many stalls they might as well be running at 2.8GHz instead of 3.4GHz, so they won't be using nearly as much power as you might expect.
-Matt
XEDX - Monday, August 20, 2018 - link
What happened to the Chromium compile rate for the 7980XE? On it's own review posted on Sep 25th 2017, it achieved 36.35 compiles per day, but in this review it dropped all the way down to 21.1.jcc5169 - Saturday, August 25, 2018 - link
Intel Will Struggle For Years And AMD Will Reap The Benefits-- SegmentNext https://segmentnext.com/SWAPNALI - Tuesday, August 28, 2018 - link
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Relic74 - Wednesday, August 29, 2018 - link
Regardless of the outcome, I went ahead and bought the 32 Core version. As I run SmartOS, an OS designed to run and manage Virtual Machines, I decided to go this route over the Epyc 24. My setup includes the new MSI MEG X399, 32 Core TR, 128GB DDR4 RAM, 3x Vega Frontier (used, $1000 for all three, no one wants them but I love them), 1 X Nvidia Titan Z (used for only $700, an amazing find from a pawn shop, did not know what he had, had it marked as an XP). Storage is 2 x 1TB Samsung 970 Pro in Raid 0 and 5x 8TB SATA in Raid 5 with 8GB of cache on card.The system is amazing and cost me much, much less than the iMac Pro I was about to buy. Now though, I can run any OS in VM, including OSX, with a designated GPU per VM and cores allocated to them. This setup is amazing, SmartOS is amazing, I have stopped running OS's with every application installed, Instead I create single purpose VM's and just install one or maybe two applications per. So for instance when I'm playing a game like DCS, a fantastic flight simulator, only has DCS and Steam installed on the VM. Allowing for the best performance possible, no, the lost of any performance by running things in VM are so minuscule that it's a none issue. DCS with the Titan V runs at over 200 FPS at 4K with everything turned to their max values. I have to actually cap games to my gaming monitors 144Hz refresh rate. Not only that but I can be playing the most demanding game their is, even in VR, while encoding a media file, while rendering something in Blender, while compiling an application, all tasks running under their own VM like a orchestra of perfection.
Seriously, I will never go back to a one OS at a time machine again, not when SmartOS exists and especially not when 32 Cores are available at your command. In fact, anyone who buys this CPU and just runs one single OS at a time is an idiot as you will never, ever harness it's full intention as no one single application really can at the moment or at least not to the point where it's worth doing it.
Most games dont need more than 4 cores, most design applications can't even use more than 2 cores, rendering applications use more of the GPU than CPU, in fact the only thing that really tasks my CPU is SmartOS that is controlling everything but even that doesn't need more than 6 cores to function perfectly, heck, I even had it at 12 cores but it didn't utilize it. So I have cores coming out of the yin-yang and more GPU's than I know what to do with. Aaaaahhhh poor, poor me.
This computer will be with me for at least 10 years without ever feeling that I need an upgrade, which is why I spent the money, get it right the first time and than leave it alone I say.
Oh and the memory management for SmartOS is incredible, I have set it up where if a VM needs more RAM, it will just grab it from another that isn't using it at the moment, it's all dynamic. Man, I am in love.
Anyway.....
Phaedra - Sunday, March 3, 2019 - link
Hi Relic74,I enjoyed reading your lengthy post on the technical marvel that is SmartOS and the 32 Core TR.
I am very much interested in the technical details of how you got SmartOS to work with AMD hardware. Which version of SmartOS, Windows, KVM (or BHYVE) with PCI passthrough etc?
I am in the process of preparing my own threadripper hyper computer and would love some advice regarding the KVM + PCI passthrough process.
You mention gaming in a VM so I assume that you used a Windows 10 guest via KVM with PCI passthrough?
The following says SmartOS doesn't support KVM on AMD hardware: https://wiki.smartos.org/display/DOC/SmartOS+Techn...
Did you build the special module with amd-kvm support:
https://github.com/jclulow/illumos-kvm/tree/pre-ep...
or
https://github.com/arekinath/smartos-live
I would appreciate any insight or links to documentation you could provide. I am familiar with Windows/Linux/BSD so you can let me have the nitty-gritty details, thanks
gbolcer - Wednesday, September 19, 2018 - link
Curious why virtualization disabled?Ozymankos - Sunday, January 27, 2019 - link
Your tests are typical for a single core machine which is laughableplease try to download a game with steam,play some music,watch tv on a tvtuner card,play a game on 6 monitors or 8 or 4 ,do some work like computing something in the background(not virus scanners,something intelligent like life on other planets)
then you shall see the truth
intel352 - Thursday, July 18, 2019 - link
Old article obviously, but wth, numerous benchmark graphics are excluding 2950x in the results. Pretty bad quality control.EthanWalker28 - Monday, February 24, 2020 - link
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