RTX 3090 24 GB VS RTX 5080 16GB

Hey, guys, I currently own an average computer with 32GB RAM and an RTX 3060, and I am looking to either buy a new PC or replace my old card with an RTX 3090 24GB. The new computer that I have in mind has an RTX 5080 16GB, and 64GB RAM.

I am just tired of struggling to use image models beyond XL (Flux, Qwen, Chroma), being unable to generate videos with Wan 2.2, and needing several hours to locally train a simple Lora for 1.5; training XL is out of the question. So what do you guys recommend to me?

How important is CPU RAM when using AI models? It is worth discarding the 3090 24GB for a new computer with twice my current RAM, but with a 5080 16GB?

https://redd.it/1oso8md
@rStableDiffusion

Face Swaping Using Qwen Edit 2509+ Combined qwen Face To Person LORA, Consistent Edit LORA with Qwen Nunchaku Lora Loader
https://youtu.be/ZpXvrrJjYNg

https://redd.it/1osrz4n
@rStableDiffusion

FlatJustice Noob V-Pred model. I didn't know V-pred models are so good.

https://redd.it/1ossrqq
@rStableDiffusion

Haven’t used SD in a while, is illustrious/pony still the go to or has there been better checkpoints lately?

Haven’t used sd for about several months since illustrious came out and I do and don’t like illustrious. Was curious on what everyone is using now?

Also would like to know if what video models everyone is using for local stuff?

https://redd.it/1osv278
@rStableDiffusion

Pilates Princess Wan 2.2 LoRa

https://redd.it/1osxc88
@rStableDiffusion