Skip to content
Main Navigation Puget Systems Logo
  • Solutions
    • Content Creation
      • Photo Editing
        • Recommended Systems For:
        • Adobe Lightroom Classic
        • Adobe Photoshop
        • Stable Diffusion
      • Video Editing & Motion Graphics
        • Recommended Systems For:
        • Adobe After Effects
        • Adobe Premiere Pro
        • DaVinci Resolve
        • Foundry Nuke
      • 3D Design & Animation
        • Recommended Systems For:
        • Autodesk 3ds Max
        • Autodesk Maya
        • Blender
        • Cinema 4D
        • Houdini
        • ZBrush
      • Real-Time Engines
        • Recommended Systems For:
        • Game Development
        • Unity
        • Unreal Engine
        • Virtual Production
      • Rendering
        • Recommended Systems For:
        • Keyshot
        • OctaneRender
        • Redshift
        • V-Ray
      • Digital Audio
        • Recommended Systems For:
        • Ableton Live
        • FL Studio
        • Pro Tools
    • Engineering
      • Architecture & CAD
        • Recommended Systems For:
        • Autodesk AutoCAD
        • Autodesk Inventor
        • Autodesk Revit
        • SOLIDWORKS
      • Visualization
        • Recommended Systems For:
        • Enscape
        • Lumion
        • Twinmotion
      • Photogrammetry & GIS
        • Recommended Systems For:
        • ArcGIS Pro
        • Agisoft Metashape
        • Pix4D
        • RealityCapture
    • AI & HPC
      • Recommended Systems For:
      • Data Science
      • Generative AI
      • Large Language Models
      • Machine Learning / AI Dev
      • Scientific Computing
    • More
      • Recommended Systems For:
      • Compact Size
      • Live Streaming
      • NVIDIA RTX Studio
      • Quiet Operation
      • Virtual Reality
    • Business & Enterprise
      We can empower your company
    • Government & Education
      Services tailored for your organization
  • Products
    • Puget Mobile
      Powerful laptop workstations
      • Puget Mobile 16″
    • Puget Workstations
      High-performance desktop PCs
      • AMD Ryzen
        • Ryzen 9000:
        • Small Form Factor
        • Mini Tower
        • Mid Tower
        • Full Tower
      • AMD Threadripper
        • Threadripper 7000:
        • Mid Tower
        • Full Tower
        • Threadripper PRO 7000WX:
        • Full Tower
      • AMD EPYC
        • EPYC 9004/9005:
        • Full Tower
      • Intel Core Ultra
        • Core Ultra Series 2:
        • Small Form Factor
        • Mini Tower
        • Mid Tower
        • Full Tower
      • Intel Xeon
        • Xeon W-2500:
        • Mid Tower
        • Xeon W-3500:
        • Full Tower
    • Custom Computers
    • Puget Rackstations
      Workstations in rackmount chassis
      • AMD Rackstations
        • Ryzen 9000:
        • R132-4U
        • R550-6U 5-Node
        • Threadripper 7000:
        • T121-4U
        • T120-5U
        • Threadripper PRO 7000WX:
        • T141-4U
        • T140-5U (Dual 5090s)
        • EPYC 9004:
        • E140-4U (Quad 4090s)
      • Intel Rackstations
        • Core Ultra Series 2:
        • C132-4U
        • Xeon W-3500:
        • X131-4U
        • X141-5U
    • Custom Rackmount Workstations
    • Puget Servers
      Enterprise-class rackmount servers
      • Rackmount Servers
        • AMD EPYC:
        • E200-1U
        • E120-2U
        • E140-2U
        • E280-4U
        • E281-4U
        • Intel Xeon:
        • X200-1U
        • X240-2U
    • Comino Grando GPU Servers
    • Custom Servers
    • Puget Storage
      Solutions from desktop to datacenter
      • Network-Attached Storage
        • Synology NAS Units:
        • 4-bay DiskStation
        • 8-bay DiskStation
        • 12-bay DiskStation
        • 4-bay RackStation
        • 12-bay FlashStation
      • Software-Defined Storage
        • Datacenter Storage:
        • 12-Bay 2U
        • 24-Bay 2U
        • 36-Bay 4U
    • Recommended Third Party Peripherals
      Curated list of accessories for your workstation
    • Puget Gear
      Quality apparel with Puget Systems branding
  • Publications
    • Articles
    • Blog Posts
    • Case Studies
    • HPC Blog
    • Podcasts
    • Press
    • PugetBench
  • Support
    • Contact Support
    • Support Articles
    • Warranty Details
    • Onsite Services
    • Unboxing
  • About Us
    • About Us
    • Contact Us
    • Our Customers
    • Enterprise
    • Gov & Edu
    • Press Kit
    • Testimonials
    • Careers
  • Talk to an Expert
  • My Account
  1. Home
  2. /
  3. Hardware Articles
  4. /
  5. Unreal Engine – AMD Radeon RX 6900 XT Performance

Unreal Engine – AMD Radeon RX 6900 XT Performance

Posted on January 19, 2021 by Kelly Shipman
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 January 19, 2021. For newer information, see our more recent articles.

Table of Contents

  • Introduction
  • Test Setup
  • Raw Benchmark Results
  • GPU Performance Analysis
  • How well does the AMD Radeon RX 6900 XT perform in Unreal Engine 4.26?

TL;DR: AMD Radeon RX 6900 XT 16GB performance in Unreal Engine

How well a video card performs in Unreal Engine really depends on what type of work you are doing. Most users are adopting Unreal Engine into their workflows due to its real-time rendering, especially with ray tracing and global illumination. In these workflows, the AMD Radeon RX 6900 XT falls behind the offerings from NVIDIA.

In rasterized workloads, the Radeon performs impressively, and its 16GB of VRAM may be useful to some users. However, due to its limited ray tracing capabilities, we still wouldn’t recommend it to most professionals as they’d be able to get a more well-rounded product from NVIDIA.

Introduction

Both NVIDIA and AMD have released several new GPUs in the final months of 2020, with one of the more recent being the AMD Radeon RX 6900 XT 16GB. This officially launched on December 8th, but due to extremely tight supply, we have not been able to get our hands on one to test until just recently. In fact, we still have not been able to purchase a card ourselves, but our friends at Linus Media Group were able to loan us a card so we could perform our testing.

While gaming is almost always a major focus during these GPU launches, professional applications have been leveraging the power available in these cards to greatly increase performance. Unreal Engine straddles the line between these two use cases, being used for game development to film and visual effects. Unlike some rendering engines that require CUDA, Unreal is more agnostic and even uses Microsoft’s DXR API for its ray tracing, letting us see what AMD’s new ray-tracing capabilities are.

Unreal Engine GPU Performance Benchmark - AMD Radeon RX 6900 XT 16GB
Image
Unreal Engine GPU Performance Benchmark - AMD Radeon RX 6900 XT 16GB
Open Full Resolution

If you want to see the full specs for the latest GPUs from NVIDIA and AMD, we recommend checking out the NVIDIA GeForce RTX 30 Series and AMD Radeon RX Graphics Cards product pages. But at a glance, here are what we consider to be the most important specs:

VRAM Cores Boost Clock Power MSRP
RTX 3060 Ti 8GB 4,864 1.67 GHz 200W $399
RTX 3070 8GB 5,888 1.70 GHz 220W $499
RTX 3080 10GB 8,704 1.71 GHz 320W $699
Radeon 6900 XT 16GB 5,120 2.25 GHz 300W $999
RTX 3090 24GB 10,496 1.73 GHz 350W $1,499

While specs rarely line up with real-world performance, the biggest thing to note is that the AMD Radeon 6900 XT 16GB is at the top of the product stack from AMD and has an MSRP that is $300 higher than the NVIDIA GeForce RTX 3080 10GB, or $500 lower than the GeForce RTX 3090 24GB. Based on price alone, this means that we (hopefully) will see better performance from the 6900 XT than the RTX 3080.

However, something else important to notice is that VRAM’s usefulness in Unreal greatly depends on your particular workflow. Typically things that impact how much VRAM are ray tracing effects, number of textures and their sizes, number of models and their poly counts, particle systems, and the render resolution.

Note that the current supply is so poor that you will be lucky to find many of these cards for anywhere near the MSRP. However, we typically use the MSRP as a baseline for price in order to rule out fluctuations due to different brands, sales, and scarcity. The actual cost you will likely need to pay for either an AMD or NVIDIA card is likely to be quite a bit different, so keep that in mind as you read this article.

CTA Image
Unreal Engine Workstations

Puget Systems offers a range of powerful and reliable systems that are tailor-made for your unique workflow.

Configure a System!
CTA Image
Labs Consultation Service

Our Labs team is available to provide in-depth hardware recommendations based on your workflow.

Find Out More!

Test Setup

Listed below is the specifications of the system we will be using for our testing:

Test Platform
CPU AMD TR 3970X 32 Core
CPU Cooler Noctua NH-U14S TR4-SP3
Motherboard Gigabyte TRX40 AORUS PRO WIFI
RAM 4x Crucial DDR4-3200 16GB (64GB total)
Video Card

NVIDIA GeForce RTX 3090 24GB
NVIDIA GeForce RTX 3080 10GB
NVIDIA GeForce RTX 3070 8GB
NVIDIA GeForce RTX 3060 Ti 8GB
NVIDIA GeForce RTX 2080 Ti 11GB

NVIDIA TITAN RTX 24GB
AMD Radeon RX 6900 XT 16GB

Hard Drive Samsung 960 Pro 1TB
Software Windows 10 Pro 64-bit (Ver. 2009)
Unreal Engine 4.26

*All the latest drivers, OS updates, BIOS, and firmware applied as of December 1st, 2020

Special thanks to our friends at Linus Media Group for loaning us their Radeon 6900 XT for this testing! Be sure to check out their "AMD Enters the Chat… RADEON 6900 XT Review" video on YouTube.

To test each GPU, we will be using the AMD Threadripper 3970X. Due to its speed at compiling shaders, building lighting, etc, Threadripper has become the go-to for Unreal development.

For the testing itself, we will be using four sample scenes from the marketplace with some modifications to make testing easier. These sample scenes are a much better representation of what someone in Virtual Production or Architecture may work with than a video game. Eventually, we would like to have custom maps for these tests, however, due to time constraints for this launch, these will work just fine. Here are some relevant stats for each scene.

Relevant stats for each test scene.
Image
Relevant stats for each test scene.
Open Full Resolution

Also of note, none of these tests use Nvidia’s DLSS. We are comparing the raw power of each card.

Raw Benchmark Results

While we are going to go through our analysis of the testing in the next section, we are providing the raw results for those that want to dig into the details. If there is a specific sort of project you work with, you can compare it to the scene that most closely matches your work.

AMD Radeon RX 6900 XT 16GB Unreal Engine GPU Performance Benchmark
Image
AMD Radeon RX 6900 XT 16GB Unreal Engine GPU Performance Benchmark
Open Full Resolution

GPU Performance Analysis

What we see across all of our test scenes and settings is fairly consistent. There are clearly two different answers to how well the AMD Radeon RX 6900XT performs. In Rasterized workloads, AMD is neck and neck with the more expensive NVIDIA RTX 3090. This is a major step forward for AMD. It has been a long time since they have been this competitive with NVIDIA's top end.

Gallery Image
Gallery Image
Gallery Image
Gallery Image
Previous Next
System Image
Gallery Image
Gallery Image
Previous Next

On the other hand, when we look at ray-traced workloads, the 6900XT struggles to keep up. On average it is close to the last generation’s 2080 Ti, however that places it between the RTX 3060 Ti and RTX 3070. Both of which cost significantly less than the Radeon. This is AMD’s first try at ray-traced hardware, so it’s respectable. Hopefully, the next generation will bridge the gap.

This is unfortunate as the Radeon’s 16GB VRAM makes it very appealing to higher-end workloads. In our tests, enabling ray tracing can as much as double the amount of VRAM being used in a scene. We can see this in the ArchViz 4K scene where the Radeon was one of the few that didn’t crash because of running out of memory. However, in every other scene where VRAM isn’t an issue, NVIDIA performed better.

How well does the AMD Radeon RX 6900 XT perform in Unreal Engine 4.26?

The AMD Radeon RX 6900 XT performed admirably in traditional rasterized workloads. It consistently matched the more expensive NVIDIA RTX 3090. The generous 16GB of VRAM will prove useful to many users that need the extra data.

However, when ray tracing is enabled, the RTX 6900 XT performed poorly. Usually beaten by the NVIDIA RTX 3070, which costs half as much. Professional users that working with ray tracing, even if it is only occasionally, would be better served by the offerings from NVIDIA.

NVIDIA's RTX 3090 is still the top all-around choice for Unreal Engine. If you don’t need the extra VRAM, NVIDIA's 3080 is a strong contender at a very reasonable price point.

CTA Image
Unreal Engine Workstations

Puget Systems offers a range of powerful and reliable systems that are tailor-made for your unique workflow.

Configure a System!
CTA Image
Labs Consultation Service

Our Labs team is available to provide in-depth hardware recommendations based on your workflow.

Find Out More!

Related Content

  • NVIDIA Blackwell GPU GenAI Software Support
  • Meet the 5-Node 6U Rackstation Built with Game Dev in Mind
  • Choosing the Right CPU for Unreal Engine: Ryzen X3D vs Threadripper
  • Do Video Editors Need GeForce RTX 50 Series GPUs?
View All Related Content

Latest Content

  • Why PugetBench for Premiere Pro is Dropping HEVC Encoding Tests
  • NVIDIA Blackwell GPU GenAI Software Support
  • Reflecting on an Incredible NAB Show 2025
  • Windows 10 End of Life: A Guide to What’s Next
View All
Tags: AMD, Game Development, NVIDIA, NVIDIA vs AMD, Radeon RX 6800, Radeon RX 6800 XT, Radeon RX 6900 XT, RTX 2080 Ti, RTX 3060 Ti, RTX 3070, RTX 3080, RTX 3090, Unreal Engine

Who is Puget Systems?

Puget Systems builds custom workstations, servers and storage solutions tailored for your work.

We provide:

Extensive performance testing
making you more productive and giving better value for your money

Reliable computers
with fewer crashes means more time working & less time waiting

Support that understands
your complex workflows and can get you back up & running ASAP

A proven track record
as shown by our case studies and customer testimonials

Get Started

Browse Systems

Puget Systems Mobile Laptop Workstation Icon

Mobile

Puget Systems Tower Workstation Icon

Workstations

Puget Systems Rackmount Workstation Icon

Rackstations

Puget Systems Rackmount Server Icon

Servers

Puget Systems Rackmount Storage Icon

Storage

Latest Articles

  • Why PugetBench for Premiere Pro is Dropping HEVC Encoding Tests
  • NVIDIA Blackwell GPU GenAI Software Support
  • Reflecting on an Incredible NAB Show 2025
  • Windows 10 End of Life: A Guide to What’s Next
  • Meet the 5-Node 6U Rackstation Built with Game Dev in Mind
View All

Post navigation

 Best Workstation PC for RealityCapture (Winter 2020)AMD Radeon RX 6900 XT Review Roundup 
Puget Systems Logo
Build Your Own PC Site Map FAQ
facebook instagram linkedin rss twitter youtube

Optimized Solutions

  • Adobe Premiere
  • Adobe Photoshop
  • Solidworks
  • Autodesk AutoCAD
  • Machine Learning

Workstations

  • Content Creation
  • Engineering
  • Scientific PCs
  • More

Support

  • Online Guides
  • Request Support
  • Remote Help

Publications

  • All News
  • Puget Blog
  • HPC Blog
  • Hardware Articles
  • Case Studies

Policies

  • Warranty & Return
  • Terms and Conditions
  • Privacy Policy
  • Delivery Times
  • Accessibility

About Us

  • Testimonials
  • Careers
  • About Us
  • Contact Us
  • Newsletter

© Copyright 2025 - Puget Systems, All Rights Reserved.