[Tepix]

If you merely want CUDA and lots of VRAM there‘s no reason to pick expensive 4090s over used 3090s

[halJordan]

Well there is and it's called performance. You dont have to push your version of what an appropriate price/performance ratio is

[Tepix]

Well, if you run out of VRAM, you drop off a performance cliff. That's a whole order of magnitude slower than just using a slower GPU but fitting everything into VRAM.