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Unreal Engine 4.26 - NVIDIA GeForce RTX 3080 Ti Performance

Written on June 16, 2021 by Kelly Shipman
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TL;DR: NVIDIA GeForce RTX 3080 Ti 12GB performance in Unreal Engine 4.26

The RTX 3080 Ti offers nearly identical performance to the RTX 3090 for a lower price, as long as VRAM is not an issue. However, stability issues were seen in projects that require large amounts of VRAM, specifically those used for Virtual Production or ArchViz. Those that need less than 12GB of VRAM can get similar results to the existing RTX 3090 but at a lower cost. Hopefully, a new driver will fix the stability issues, but even so, users working with large scenes would be better off opting for the RTX 3090.

Introduction

NVIDIA has a tradition of releasing "Ti" variants of their video cards which serve as a more powerful variant of the base model and often fill gaps between product tiers. The launch of the RTX 3080 Ti continues this trend. Compared to the base RTX 3080, the new RTX 3080 Ti has 2GB more VRAM (12GB versus 10GB) and 18% more CUDA cores, although the maximum boost clock is a bit lower. In fact, in terms of performance, the RTX 3080 Ti should be closer to the RTX 3090 than it is to the RTX 3080.

Professionals using Unreal Engine have a wide range of needs when it comes to the GPU. Some on the Game Development side don’t need much power because their target audience probably isn’t running the latest hardware. Meanwhile, some of those in the ArchViz or Virtual Production space may want every bit of graphical power they can get. For some, 12GB of VRAM may be more than plenty, while others need all 24GB available in the RTX 3090. In this article, we’ll look at performance in a variety of scenes to see how the new RTX 3080 Ti stacks up to the existing GeForce line.

Unreal Engine Performance Benchmark - NVIDIA GeForce RTX 3080 Ti 12GB

If you want to see the full specs for the latest NVIDIA GPUs we recommend checking out the NVIDIA GeForce RTX 30 Series product page. But at a glance, here are what we consider to be the most important specs:

VRAM Cores Boost Clock Power MSRP
RTX 3060 12GB 3,584 1.78 GHz 170W $329
RTX 3060 Ti 8GB 4,864 1.67 GHz 200W $399
RTX 3070 8GB 5,888 1.70 GHz 220W $499
RTX 3070 Ti 8GB 6,144 1.77 GHz 290W $599
RTX 3080 10GB 8,704 1.71 GHz 320W $699
RTX 3080 Ti 12GB 10,240 1.67 GHz 350W $1,199
RTX 3090 24GB 10,496 1.73 GHz 350W $1,499

As we noted earlier, the RTX 3080 Ti has 2GB more VRAM than the RTX 3080, and has close to the same CUDA core count as the RTX 3090. Price-wise, it is $500 more than the RTX 3080, or $300 less than the RTX 3090. On paper, it looks to be a great card for those that need high GPU performance, but not necessarily the large 24GB of VRAM that is found on the RTX 3090.

One concern we have is that this is a 350W card - just like the RTX 3090 - but uses a 2-slot cooler that is essentially the same as what is on the lower wattage RTX 3080. In our testing, this makes it both louder and hotter than any other RTX 3000 series card, which can be a significant concern if your system does not have adequate cooling.

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Test Setup

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

*All the latest drivers, OS updates, BIOS, and firmware applied as of June 8th, 2021

One small note. The RTX 3080 Ti requires Nvidia’s driver version 462.65. However, for some unknown reason, that driver does not support the RTX 3090. For that card, we used driver version 462.59. This shouldn’t make a significant difference in our numbers, but I did want to call it out.

To test each video card, we used V-Ray 5.00.01. These tests were run twice on each GPU, with the best result being included in the graphs below.

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.

ArchViz - High texture count and resolution, highly detailed meshes, baked lighting

Megascans Apartment - high-end game quality assets and lighting. Both with and without Ray tracing

Megascans Temple - Cinematic quality assets an textures. Numerous shadow casting lights. Ray tracing. High VRAM usage (15GB+)

Virtual Studio - Lower end Virtual production scene with composited videos.

Overall Performance Analysis

Overall, the raw performance of the RTX 3080 Ti is quite impressive and lines up about where you would expect given its specifications. In most cases, it nearly matches the RTX 3090. This is certainly an interesting card for many Unreal Engine users. It offers nearly identical performance to the RTX 3090 for a few hundred dollars less. On the other hand, it is considerably more expensive than the standard RTX 3080, and that extra cost may not be worth the modest 10-12% bump in performance.

Averaging the performance over several projects and at multiple resolutions gives us a good overall representation of how a particular video card compares to other video cards. However, each industry has its own specific needs and requirements that can give us a more nuanced view of how useful that card is to those industries.

GameDev Specific Analysis

Game Development is usually less concerned about GPU performance than the people actually playing the games. Better FPS in your viewport doesn’t make much difference past a certain point, say 30-60 FPS. And if you can only manage 30 FPS in your game while using a 3090, not many potential consumers of your game will be able to play with acceptable frame rates. GameDev also doesn’t push the VRAM too far for the same reason. If your target consumer has 4-8GB of VRAM, then using 24GB isn’t going to help you. As we can see from averaging out the GameDev scenes from our tests, the RTX 3080 Ti is roughly 10% faster than the current RTX 3080, and almost tied with the RTX 3090.

ArchViz Specific Analysis

ArchViz leans a bit more toward baked lighting than real-time for performance reasons. Either way, a hallmark of ArchViz is nightly detailed models and large textures. This causes a bigger need for VRAM than we see in GameDev. For this reason, we see the RTX 3080 Ti both gain in score over the RTX 3080 but lose ground to the RTX 3090. One of the two scenes used for this score saw the system crashing while running in 4k. This is likely due to a driver issue, so hopefully, that will be fixed in time. For ArchViz, we would still recommend the RTX 3090 because it has double the VRAM of the RTX 3080 Ti. Running out of VRAM will give significant performance penalties to your projects.

Virtual Production Analysis

Virtual Production runs the gamut from simple scenes with minimal geometry and textures, to cinematic quality assets needing huge amounts of VRAM. On the simpler side of Virtual Production projects, we see the RTX 3080 Ti nearly tie the RTX 3090, just as we did with Game Development. On the upper end, with cinematic quality assets, we saw the RTX 3080 Ti gain ground over the 3080 due to the increased VRAM, but lose ground to the 3090 for the same reason. We also saw the stability issues here in one scene while running at 4k. The massive 24GB of VRAM available with the RTX 3090 is still the best choice for high-end virtual production workflows. See the next section for more details on high VRAM usage.

A note on High VRAM usage

When the project needs a significant amount of VRAM, as is often the case with Virtual Production or ArchViz workflows where high resolutions and ray tracing are required, we see the RTX 3080 Ti gain ground over the RTX 3080, and then falter a bit. The Megascans Temple scene consumes quite a bit of VRAM. When running at 1440p, VRAM usage hovers between 12-15GB, while at 4K, it will spike just over 20GB. At 1080p, we see the RTX 3080 TI performing 40% faster than the standard 3080, and almost triple the speed at 1440p. That extra 2GB of VRAM is just enough to help.

However, at 4k things took a turn for the worse. The RTX 3080 Ti would cause the system to crash to a blue screen. Usually in Unreal Engine, when the VRAM is used up it will overflow to system RAM with a significant performance hit, or the Engine would crash. Having the entire system crash is a bit alarming. This was replicated with multiple cards, on both the Studio and Game Ready drivers. The exact same system with a standard RTX 3080, 3070, or even 3060 was able to complete the tests without crashing. The 3080 Ti requires studio driver 462.65, which is a very unusual driver in that it does not support the RTX 3090. We’ve passed this information along to NVIDIA, and hopefully, we’ll have a new driver soon that both fixes this issue, and unifies all cards to the same driver. Until then, we cannot recommend this card to anyone with very large scenes.

How well does the NVIDIA GeForce RTX 3080 Ti 12GB perform in Unreal Engine?

The RTX 3080 Ti offers nearly identical performance to the RTX 3090 for a lower price, as long as VRAM is not an issue. However, stability issues were seen in projects that require large amounts of VRAM, specifically those used for Virtual Production or ArchViz. Those that need less than 12GB of VRAM can get similar results to the existing RTX 3090 but at a lower cost. Hopefully, a new driver will fix the stability issues, but even so, users working with large scenes would be better off opting for the RTX 3090.

One concern we do have is that this card draws as much power as the 3090, but has a much smaller cooler. So far in our testing temperatures of a single card have been within the specs laid out by Nvidia. Currently there is no blower style card, so stacking 3 or 4 in a system isn't an option.

As always, keep in mind that these results are strictly for V-Ray. If you have performance concerns for other applications in your workflow, we highly recommend checking out our Hardware Articles (you can filter by "Video Card") for the latest information on how a range of applications perform with the latest NVIDIA and AMD GPUs, as well as with different CPUs and other hardware.

Unreal Engine Workstations

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

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Labs Consultation Service

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

Find Out More!
Tags: NVIDIA, RTX 3080, RTX 3090, RTX 3070, RTX 3060 Ti, RTX 3060, RTX 3080 Ti, GPU, GPU Acceleration, Unreal Engine, Game Development, virtual production, Architecture
Alex VK

Would love to see your Unreal Engine benchmarks comparisons between mobile and desktop CPUs !(Ryzen 5900H vs 5900 etc)

Posted on 2021-06-19 11:06:22
Ampere

https://www.nvidia.com/down...

Does it still crash with the latest Studio 471.11 driver?

Posted on 2021-06-25 12:37:46
Kelly Shipman

yes. we just tested the new driver are are still getting the crash.

Posted on 2021-06-25 19:18:27
Sdadwadwdwaawdwad DadwassaDwad

Even with Studio Drivers 462.65 i am getting blue screens with the DPC Watchdog Violation error. Any way to fix this or do we kinda have to just wait until NVIDIA released new drivers with the fix?

Posted on 2021-07-01 23:17:08
Kelly Shipman

the DPC Watchdog Violation error is usually SSD related. in what circumstance are you getting that error and is it with the 3080 Ti?

Posted on 2021-07-02 17:42:13
Sdadwadwdwaawdwad DadwassaDwad

yes it is with 3080 ti, before i was getting blue screens aswell with the latest drivers, so i saw this thread from you guys and installed older studio driver instead, and it had no blue screens what so ever, but just few days ago even with studio drivers, i started getting blue screens with DPC Watchdog Violation error, unfortunately i didnt had the chance to take a screenshot of what was the blue screen error on the latest drivers so idk.

i am getting the blue screens only when using UE4 and when trying to render, it even blue screens when i try to render at native 1080p resoultion, the scene is not that heavy, uses 10-11 gb vram at most while rendering. However while gaming, benchmarks with octanebench, heaven benchmark, the blue screens does not happen.

I really hope someone can come up with the fix or nvidia releases a new driver for it,

Also i found this video where he says to voltage lock the card to get rid of the 3080 crash, but i dont know if its the same case with the 3080 ti though, but you can have a look here : https://youtu.be/--YvuxE0xl4

If you have any ideas on potential fix for this, please let me know! thank you.

Posted on 2021-07-02 19:05:39
Kelly Shipman

interesting. Sadly I haven't heard anything yet. We'll keep bugging Nvidia and will pass along any fix we hear about.

Posted on 2021-07-02 20:47:50
Kelly Shipman

with studio driver 471.41 release on the 19th, i'm no longer getting a blue screen. the engine will crash when out of memory, but not the whole system. hopefully it will fix your issue as well.

Posted on 2021-07-20 18:31:56
Demo Works

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Posted on 2021-07-12 04:20:18