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  1. Home
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  5. After Effects CC 2017.2 CPU Comparison: Skylake-X vs Threadripper

After Effects CC 2017.2 CPU Comparison: Skylake-X vs Threadripper

Posted on August 30, 2017 by Matt Bach
Always look at the date when you read an article. Some of the content in this article is most likely out of date, as it was written on August 30, 2017. For newer information, see After Effects CC 2017.2 CPU Comparison: Skylake-X vs Threadripper

Table of Contents

  • Introduction
  • Test Setup
  • Threadripper: Creator Mode vs Game Mode
  • RAM Preview
  • Final Render
  • Conclusion

Introduction

When AMD launched their Ryzen CPUs back in March, they became a serious challenger to Intel in a number of different markets. Intel fired back in June with their 6-10 core Skylake-X CPUs which in many cases put Intel back on top, but the dust hasn't even settled and both Intel and AMD are once again launching new products. In mid-August, AMD released their 12 and 16 core Threadripper CPUs that are designed specifically for workstation workloads. On Intel's side, the Core i9 7920X 12 core Skylake-X CPU launched a few days ago (on August 28th, 2017) and the 14, 16, and 18 core variants are scheduled to be here in September.

With all these new CPUs, it can be very tough to keep track of what CPU is the best for different applications so today we are going to look specifically at how AMD's Threadripper CPUs compare to the currently available Intel Skylake-X CPUs in After Effects. One thing we do want to note is that since After Effects CC 2015, high core count CPUs are not typically the best choice for an After Effects workstation. As Adobe has added more and more GPU acceleration, we have seen a shift in After Effects to the point that quad core CPUs with a high frequency actually out-perform higher core count CPUs. However, these quad core CPUs typically only support up to 64GB of RAM which often make them not ideal for high resolution or complex projects. Because of this duality, we are also going to be including the Intel Core i7 7700K quad core (Kaby Lake) CPU in our testing as it is currently gives the highest raw performance in After Effects.

There are a wide variety of tasks we could test in After Effects to see how these new CPUs perform, but in this article we will specifically be looking at RAM Preview and Final Render performance. Since Adobe has been adding more and more support for GPU acceleration since AE 2015.3, we are specifically going to be testing both standard projects as well as projects that make heavy use of accelerated effects including Lumetri Color, Sharpen, and Gaussian Blur. If you would like to skip over our test setup and analysis of the individual benchmarks, feel free to jump right to the conclusion section.

Test Setup

Our test platforms for Skylake-X and Threadripper are listed below, but we did want to point out that the RAM configuration changed a little bit depending on the CPU. For the majority of the CPUs we used DDR4-2666 RAM but since the Core i7 7800X only natively supports DDR4-2400 we tested with that RAM instead.

X299 & Threadripper Test Platforms  
Motherboard: Gigabyte X299 AORUS Gaming 7
(rev 1.0)
Gigabyte X399 AORUS Gaming 7
(rev 1.0)
CPU:

Intel Core i7 7800X 3.5GHz
(4.0GHz Turbo) 6 Core

~$389

Intel Core i7 7820X 3.6GHz
(4.3/4.5GHz Turbo) 8 Core

~$599
Intel Core i9 7900X 3.3GHz
(4.3/4.5GHz Turbo) 10 Core

~$999
Intel Core i9 7920X 2.9GHz
(4.3/4.4GHz Turbo) 12 Core

~$1199

AMD Threadripper 1920X 3.5GHz
(4.0GHz Turbo) 12 Core

~$800
AMD Threadripper 1950X 3.4GHz
(4.0GHz Turbo) 16 Core

~$1000
RAM: 8x DDR4-2400 16GB
(128GB total)
8x DDR4-2666 16GB
(128GB Total)
8x DDR4-2666 16GB
(128GB Total)
GPU: NVIDIA GeForce GTX 1080 Ti 11GB
Hard Drive: Samsung 960 Pro 1TB M.2 PCI-E x4 NVMe SSD
OS: Windows 10 Pro 64-bit
Software: After Effects CC 2017.2

As we noted in the last section, After Effects actually performs best with a quad core, high frequency CPU so neither Skylake-X or Threadripper are likely to be the absolute best in terms of raw performance. The higher RAM capacity of these two platforms is a major consideration, but to see how they compare against what is currently the fastest CPU for After Effects we also decided to include the Intel Core i7 7700K in our testing.

Intel Core i7 7700K Test Platform
Motherboard: Asus PRIME Z270-A
CPU: Intel Core i7 7700K 4.2GHz
(4.5GHz Turbo) 4 Core

~$339
RAM: 4x DDR4-2400 16GB
(64GB total)
GPU: NVIDIA GeForce GTX 1080 Ti 8GB
Hard Drive: Samsung 960 Pro 1TB M.2 PCI-E x4 NVMe SSD
OS: Windows 10 Pro 64-bit
Software: After Effects CC 2017.2

Before getting into our testing, we also want to point out that while our test platforms are using a single hard drive, that is not actually what we would typically recommend to our customers. A two (or more) drive configuration with the cache files on a secondary drive can make a big impact when scrubbing through complex timelines. However, since we will not be testing anything that would benefit from multiple drives in this article, we opted to use a single drive to cut down on the number of variables.

In order to accurately benchmark the different CPUs, we tested the performance when rendering and playing 2D animation projects as well as working with 4K ProRes 4444 video files using a number of popular GPU accelerated effects. This won't test everything you could possibly do in After Effects, but by testing a variety of projects from different sources we hope to find a number of trends that will help us decide what CPU is the best for AE.

The projects we used (along with their source) are:

Standard Projects Length Source
The People's Template
(1920×1080)
~12 seconds
(30 FPS – 383 frames)
BlueFX
Grunge Frames
(1920×1080)
~30 seconds
(24 FPS – 469 frames)
Free AE Templates
Fiber Particles
(960×360)
10 seconds
(24 FPS – 190 frames)
Video CoPilot
Simple Rings
(1920×1080)
~10 seconds
(24 FPS – 150 frames)
Free AE Templates
5K Subscribers
(1920×1080)
~11 seconds
(30 FPS – 307 frames)
FX Channel House
Heavy GPU Projects Length Source Tested Effects
4K ProRes 4444 ~16 seconds
(23.976 FPS – 394 frames)

Transcoded from:
EPIC DRAGON
4K HD (3840×2160)
REDCODE 11:1
R3D Sample Files

-Lumetri Color Correction

-Gaussian Blur

-Sharpen

Threadripper: Creator Mode vs Game Mode

Before we start comparing Intel and AMD, the first thing we want to do is to ensure that we are testing Threadripper in the proper mode. Since Threadripper is in essence two Ryzen CPUs combined into a single device, it can have some performance issues depending on how the application is coded. This is not an AMD-only issue, but is something we see with some regularity on the Intel side as well with dual Xeon workstations.

You can read the details in AMD's blog about using Threadripper for gaming, but the short of it is that some applications simply don't work well with very high core counts – especially when those cores are spread across multiple "CPUs". To try to alleviate these issues, AMD has provided the ability to switch between two modes through the AMD Ryzen Master software:

  1. Creator Mode (default) – All cores are used
  2. Game Mode – Half the cores are disabled which essentially turns Threadripper into a Ryzen CPU with more PCIe lanes and memory bandwidth.

Switching modes requires you to restart your computer so it isn't something you can do on the fly, but since After Effects typically works best with fewer, but faster, cores we wanted to test to see if Game Mode would provide a boost in performance. Luckily, this is easy enough to do by simply running our normal After Effects benchmark suite in both modes using the 1950X CPU:

After Effects Threadripper Game Mode vs Creator Mode

[-] Hide Raw Results

[+] Show Raw Results

Feel free to examine the raw data from both our RAM Preview and Final Render testing by expanding the "Show Raw Results" link, but the data is pretty straight-forward: Creator Mode is the right choice for After Effects. The difference wasn't much, but on average we saw about a 2% performance gain with the Threadripper system in Creator Mode. Due to this, we are going to continue our testing without worrying about including "Game Mode" results.

RAM Preview

Now that we know that Creator Mode is definitely the way to go with Threadripper, the first task in After Effects we want to look at is performance during RAM Preview. More than almost anything else, the faster you are able to play through your projects, the more productive you will be able to be. Due to this, high performance for RAM Preview is one of the most important parts of an After Effects workstation.

After Effects Skylake-X vs Threadripper RAM Preview Benchmark

[-] Hide Raw Results

 

[+] Show Raw Results

Since we are comparing 7 different CPUs across 8 different projects, it would take us a long time to go through the results one by one. Because of this, we decided to compile all the results into an overall average for each CPU compared to the Intel Core i7 7800X. As the lowest cost CPU in both the Skylake-X and Threadripper lines, it should make it a great point to compare the other CPUs against. If you wish to examine the raw results yourself, you can do so by clicking on the "Show Raw Results" link under the chart.

There are a number of interesting things to point out in our testing starting with the fact that none of the Intel Skylake-X or AMD Threadripper CPUs are able to touch the performance of the Intel Core i7 7700K. And because we know people will ask, our earlier testing also showed that AMD's Ryzen CPUs similarly cannot keep up with the Core i7 7700K in After Effects.

What surprised us was actually how well the Threadripper CPUs did considering the fact that After Effects typically values CPU frequency over raw core count. The Intel Core i7 7820X still beats both of the higher-priced Threadripper CPUs, but at the ~$1000 price point the Threadripper 1950X actually out-performed the Core i9 7900X by a few percent.

Final Render

After Effects Skylake-X vs Threadripper Final Render Benchmark

[-] Hide Raw Results

 

[+] Show Raw Results

Just like in the previous section, since we are comparing 7 different CPUs across a range of projects, we decided to compile all the results into an overall average for each CPU compared to the Intel Core i7 7800X. If you have the time and will, feel free to examine the raw results yourself by clicking on the "Show Raw Results" link below the chart.

Interestingly, our base-line Core i7 7800X did better this time compared to the previous section which results in a slight shift in the relative performance percentages for the other CPUs. The end result is still largely unchanged however: for raw performance the Intel Core i7 7700K handily beats all the Intel Skylake-X and AMD Threadripper CPUs with the Core i7 7820X coming in at second place. Both Threadripper CPUs did relatively well and out-performed both the Intel Core i9 7900X and 7920X, but neither did as well as the lower cost Core i7 7820X.

Conclusion

Overall, we were pleasantly surprised at how well Threadripper held up. Neither Threadripper or Skylake-X can touch the raw performance of the Intel Core i7 7700K quad core CPU, but Threadripper in particular didn't see as much of a performance hit as we expected.

After Effects Skylake-X vs Threadripper Overall Benchmark Results

Averaging our results from both the RAM Preview and Final Render sections, we get a very clear idea about how Threadripper compares to Skylake-X. Overall, both the 12 and 16 core Threadripper CPUs compared very favorably to the higher-end Intel CPUs, beating the Core i9 7900X by 2-3% and the Core i9 7920X by ~10%. However, the lower cost Intel Core i7 7820X was actually faster than either Threadripper CPU by about 4-5% which keeps Threadripper from really being the ideal choice for a pure After Effects workstation.

So does that make Threadripper bad for After Effects? It really comes down to what you use your system for and what types of workloads are a priority for you. If you are building a machine purely for After Effects then Threadripper likely isn't the best option since both the Intel Core i7 7700K and Core i7 7820X are overall faster while also being a good amount cheaper. However, if your workflow includes applications where the high core count of Threadripper can be used effectively (such as 3D rendering or ray tracing) then Threadripper could very well be a very solid choice.

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