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  1. Home
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  5. Pix4D 4.3 vs 4.4 Performance Differences

Pix4D 4.3 vs 4.4 Performance Differences

Posted on June 11, 2019 by William George
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 Some of the content in this article is most likely out of date, as it was written on June 11, 2019. For newer information, see our more recent articles.

Table of Contents

  • Introduction
  • Test Hardware
  • Benchmark Details
  • Results – Intel Core i9 9980XE
  • Results – AMD Threadripper 2990WX
  • Analysis
  • Conclusion

Introduction

Pix4D is an advanced photogrammetry application, suited to a wide range of uses, with a focus on handling images captured by drones. Processing of those images into point clouds and 3D meshes/textures is time-consuming, heavily utilizing a computer's CPU and GPU. We have recently updated our benchmark tools for Pix4D, and published articles looking at CPU and GPU performance on version 4.3 – but in the midst of our testing, version 4.4 was released. Now it is time to see if that update had any impact on performance that might alter our recommendations.

Test Hardware

Here is a list of the hardware we tested Pix4D 4.4 on. We used two different configurations, utilizing processors which we found to offer very good performance in Pix4D 4.3 and representing both of the major CPU manufacturers. The video card and RAM capacity were kept the same across both platforms and software versions, to avoid either of those throwing off the comparison.

Test Platforms
CPU Intel Core i9 9980XE
AMD Threadripper 2990WX
CPU Cooler Noctua NH-U12DX i4
Corsair Hydro Series H80i v2
Motherboard Gigabyte X299 Designare EX
Gigabyte X399 AORUS Xtreme
RAM 8x DDR4-2666 16GB (128GB total)
Video Card NVIDIA GeForce RTX 2080 Ti 11GB
Hard Drive Samsung 960 Pro 1TB
Software Windows 10 Pro 64-bit (version 1809)
Pix4D 4.3.33 & 4.4.12

Benchmark Details

We have improved our benchmarking for Pix4D compared to previous articles. Now we have four image sets that we own the rights to, covering both smaller and larger size Model and Map projects. The smaller image sets are included in our public Pix4D benchmark, which you can download and run if you want to compare your system's performance to what we measured in our testing.

  • Rock Model – 82 photos at 20 megapixels each
  • School Map – 51 photos at 18 megapixels each
  • School Model – 278 photos at 18 megapixels each
  • Park Map – 810 photos at 18 megapixels each

Each image set was processed 2-3 times on each version of Pix4D, and the fastest overall result was used for the comparisons below.

Results – Intel Core i9 9980XE

Here are charts showing the performance impact that updating to Pix4D 4.4.12 had on the Intel Core i9 9980XE. The newer software version is shown in a darker color, and there are graphs showing raw processing time (in seconds) as well as relative performance.

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Results – AMD Threadripper 2990WX

And here are charts showing Pix4D 3.3.33 versus 4.4.12 performance on AMD's Threadripper 2990WX. Again, the newer software version is shown in a darker color – and there are graphs showing raw processing time (in seconds) as well as relative performance.

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Analysis

It looks like performance in Pix4D 4.4.12 is actually a bit slower than in the previous release – particularly when processing 3D Models. To dig a little deeper into what is going on, here is a table showing how long each step took on each combination of CPU and version:

Pix4D 4.3.33 Versus 4.4.12 Performance on Intel Core i9 9980XE and AMD Threadripper 2990WX
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Pix4D 4.3.33 Versus 4.4.12 Performance on Intel Core i9 9980XE and AMD Threadripper 2990WX

It looks like the bulk of the slowdown on 3D Model projects is coming from Step 1 – "Initial Processing" – which includes computing keypoints on images and then matching and aligning them using those keypoints. It doesn't look like the 3D Map projects had the same slowdown, though, so I suspect that the way these project types are handled in Step 1 has changed between version 4.3.33 and 4.4.12.

I reached out to our contacts at Pix4D, to get their input on this discovery. The response from their developers was that they were aware of the slowdown I observed, and that it is due to a fix they made to increase stability. It sounds to me like there was good reason for the change, and hopefully they can work to improve performance again in future versions while retaining the increased stability.

Conclusion

It is unfortunate that Pix4D 4.4.12 is a little slower than the previous version when it comes to processing 3D Model projects. However, the slowdown was similar on both the Intel and AMD processors we tested – so I don't think it will impact our overall recommendations.

The Core i9 9980XE remains the strongest CPU we have tested for 3D Maps, while AMD's Threadripper 2990WX is slightly better for large 3D Model projects (while costing less) and Intel's i9 9900K takes the top performance with small models (and is far, far cheaper).

Looking for a
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Puget Systems offers a range workstations tailored for Pix4D, Metashape, and RealityCapture. Even in the most demanding situations, our workstations and designed to minimize downtime and allow you to work as efficiently as possible.

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Tags: 2990WX, 9980XE, AMD, AMD Threadripper 2nd Gen, Core i9, CPU, Intel, Intel X-series, Performance, Pix4D, Version

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