Looking to build a new pc for the purpose of sim racing, multi camera set input - at 4K, live streaming, video editing, and gaming. I'm looking for amazing performance while doing multiple things at the same time. I cannot run a two system setup at the moment. I will also be using a yolobox extreme for certain recordings for my content creation.

Current system is 5900x, 64gb DDR4 ram, RTX 4090 (can use this is new build).

I was looking at the 9950x3d but also saw the 9950x3d2 is coming out. I want to build this year and normally build every 4-5 years and just stay with the computer for the while with some part getting upgrade where possible. Had a 1080 when I started and grabbed a 4090 at retail.