These are good points made by jmone. The proportion of NV to AMD in the forums of HT and MSFS is 90 to 10%. But there are the AMD users and stronger in gamer forums. Already had contact with several AMD users for MSFS.
NV currently has the technical lead in DLSS and negatively in power consumption. NV always pushes high-end cards that are characterized by significantly higher power consumption. The new small RTX 3050 is a positive exception with only 100W TDP.
DLSS is an NV only solution, which will be overtaken by Intel Arc in 2022/2023, which will replace DLSS with an alternative via XeSS. In addition, XeSS is technically open for all market providers. AMD is riding in Intel's slipstream here and takes the XeSS advantages with it.
DLSS is not an topic for MSFS and HT. As far as I know, this is only interesting for games that support DLSS. So, checked off as not necessary.
The idea of using iGPU for gaming sounded interesting at first, since I hadn't looked at it before. I made up for that and read a detailed review. The result is sobering. When I look at the strongest AMD iGPU - 5700G - I only get 18 fps for MSFS at 1080p in the preset high details.
Review 5700G
https://www.tomshardware.com/reviews/amd-ryzen-7-5700g-review This is clearly too low for MSFS, which wants to see 30..35 fps. The requirements in MSFS increase with higher detail and complex flight environment like clouds, fog and big cities with lots of details. So, an iGPU is not a solution for MSFS unless you reduce detail and go back to 720p.
As jmone notes, current graphics cards have become very quiet.... and a quiet PC is my goal.
Currently, the RTX 3050 is coming out, but it's still in short supply and thus relatively expensive. I will wait another month until the availability has improved, the drivers are more stable and there is first user feedback in the forums. As an alternative I see the RX 6600 which is located above the RTX 3050 and slightly below the RTX 3060.
Currently I prefer the RX 6000 as it has more headroom for all applications, is quiet under load and has stable drivers. Will be watching both cards on the forums.
Here is a comparison video to the RX 6600 XT - a 15% more powerful version of the RX 6600.
https://www.youtube.com/watch?v=B5gKVnL_7ts Note that Ultra settings have been used throughout. High settings are a very good compromise between image quality and necessary computing power.
Attached a presentation with benchmarks, from which I have taken important data. I have converted all benchmarks to high settings, since this is the best compromise.