RTX 4070 8K gameplay with Fortnite using an i3 10100F - Game capture NVIDIA Shadowplay at 8K 60FPS
4RTX 4070 https://geni.us/RTX4070
RTX 4070 8K gameplay with Fortnite using an i3 10100F - Game capture NVIDIA Shadowplay at 8K 60FPS
In this video I’m testing gameplay at 8K with the Nvidia RTX 4070 FE Founders Edition card. Although this is gameplay, the video is really a test of the resolution and frame rate of the game in 8K with the RTX 4070.
The CPU I’m using is the Intel i3 10105F. In the video title I’ve said i3 10100F. This is because the 10100F and 10105F are basically the same CPU, with the 10105F being clocked slightly higher. There really isn’t any practical difference between these two CPUs for gaming. I only said 10100F in the title as it’s more likely that people would search for that.
While both the 10100F and 10105F are awesome for budget gaming PC builds, they are a terrible choice for an RTX 4070, except for one particular use. These CPUs will heavily bottleneck the RTX 4070 in 1080 and 1440 gaming and they are only just about bearable for 4K.
However, for 8K gaming, these CPUs do not become the bottleneck. As you can see with the GPU usage in the MSI Afterburner overlay stats, the GPU usage is almost maxed out all the time.
Now, I say almost, because the last few percent of the GPU power isn’t always being used. I doubt this is due to the CPU as its usage is generally always low enough for the GPU to hit 99%. The reason for the GPU fluctuation may be because it is also doing the in game recording using the Nvidia Shadowplay game capture and screen capture function. I’m not sure if Nvidia still call this Shadowplay but it’s a function within their GeForce Experience application.
Although the part of the GPU that deals with Shadowplay & NVENC isn’t directly related to game functions, such as processing and rendering. When using the in-game capture function, you will lose a few frames worth of performance. As this game capture function does affect the frame rate in gameplay, I don’t think that it’s unreasonable to suggest that this could be what’s stoping complete maxing out of the GPU.
And this brings me neatly on to the recorded frame rate of the capture. While the MSI Afterburner stats clearly show the game performing above 60FPS almost all of the time. There are noticeable visual frame drops during the video playback, which does suggest that 60FPS was not being maintained. Well, there’s a few things that could be the cause of this.
First of all. Shadowplay does not record in CFR constant frame rate video, it records in VFR variable frame rate video. VFR is almost impossible to edit correctly as any NLE, video editing software, will deal with it as either frame interpolation, which shows up as ghosting or smearing of the frames. Or it will deal with it as nearest neighbour, which definitely looks better but will replicate one frame to the next frame every now and then, which has the affect of looking like frames have been dropped. There are other ways to deal with VFR footage in a CFR timeline. However, these methods are usually found on very specific high end post processing units.
So where do these “dropped” frames come from in the capture, when the game is clearly above 60FPS for the best part? Well, one possible cause is what I’ve just mentioned, VFR being edited in a CFR timeline/project. Or it could indeed be the CPU and it’s 0.1% low and 1% frame rates dipping below 60FPS. The problem I had when recording this video was that I couldn’t get MSI Afterburner to show the live stats/graphs for the various frame rate stats when running its benchmark.
There’s also the possibility that I was tipping over the edge for the VRAM, which could also cause momentary frame drops. As the VRAM is also being used by the PC and at points it did look like it may have gone over the 12GB of the RTX 4070. Unfortunately, Fortnite does not have an option to limit its use of VRAM.
The reason for using Shadowplay, even though it can be problematic, is because it did allow me to record in 8K.
To be clear. This video was recorded in 8K, edited in 8K, exported in 8K and then uploaded to YouTube. For anyone interested. Shadowplay recorded at 8K 60FPS 250Mb/s H.265, it's maximum settings. The video was edited in DaVinci Resolve on an Apple MacBook Pro M1 Max and exported for YouTube using the Apple Media Accelerators option in Resolve using H.265 @ 300Mb/s.
Anyway. Considering that all the fancy graphics stuff was turned off in Fortnite in order for me to get 8K 60FPS. I think the basic rasterised 8K output looked great and there was far more texture detail than I had expected.
Hopefully you’ve found this video interesting and a bit of fun. I would love to hear from anyone who may have been able to watch the video in 8K. As I don’t have an 8K monitor or TV :)
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Dave.