1. GeForce RTX 3090

This is a great card for streaming as it allows most games to stream at 4k while keeping frames above 60 and sometimes above 100. The only drawback of this card is power consumption. NVIDIA recommends a 750W AC adapter (AC adapter) to run this card.

2. Radeon RX 6800 XT

This card is very powerful, no doubt about it. It has 16 GB of VRAM and is very powerful. You can play 4K games without problems. If you have a good CPU to pair and encode with, this card is great. Otherwise, you should consider an NVIDIA card with DLSS and onboard encoding for great stream quality.

3. GeForce RTX 3080

The RTX 3080 is a GPU beast, with both good and bad points. This is a good thing as you should be able to stream most games in 4k with a decent frame rate (60+ FPS). The drawback of this card is power consumption. It has a 12-pin power adapter, so your device should be able to handle it.It also draws a lot of current, so you'll need to prepare a power supply (AC adapter). You'll probably need a 750W or higher PSU.

4. Radeon RX 6700 XT

Streaming on this card is passable. This is a very powerful card, but the encoder cannot compete with his NVIDIA NVENC encoder. But keep in mind that the CPU can handle the coding, which makes this card a very viable card for that function. Apart from pure stream quality, you should know that this GPU requires a power supply of 650W to build. This is becoming more common with newer GPUs. So if you haven't yet upgraded your power supply, you should consider doing so.