Recently, Blender started to take advantage of RTX cards. Using Tensor cores to do the denoising (AKA: Optix).
I have a RTX 2060 and it’s quite good.
You can check the performance data here: https://opendata.blender.org/
P.S. Existing RTX 2000 series cards will be cheap or will get discounts as 3000 series available on the market.