Summary
The RTX 2080 was supposed to deliver 4K gaming at a more affordable price point, but it wasn’t able to handle 60fps or more in demanding games with all of the settings maxed out.
In nearly every game I've tested with the RTX 3080 at 4K, I was able to hit or exceed 60fps.
I’ve been truly amazed with that .The performance increase at 4K from the RTX 2080 to RTX 3080 is significant. In most games, it was 60 percent or more.
However , The RTX 3090 , Nvidia's top of the line card only yielded a 5% to 18% increase over the RTX 3080, and both cards were already hitting or exceeding 60fps. Furthermore, the RTX 3090 costs more than double the cost of an RTX 3080.
The only slight pause I have here is the 10GB of memory available on the RTX 3080. While Nvidia says the average game currently uses 4 to 6GB of memory at 4K, I do worry this will jump closer to maxing out the RTX 3080s memory for future games if you want the very best settings. I would have loved to have seen 16GB here. The RTX 3090 has a huge 24GB of memory.
So it is a delicate balance, to decide which card is worth it for you.
OcUk are a main supplier so you should consider buying your card from here as they might give you a special offer in the future.
Performance comparison in games
https://youtu.be/LzTRVUsh9nM