A good secondhand 3080TI from ebay with buyer protection would be a great matchup foir your new cpu. I’ve had my Gigabyte Eagle 12gb model for a good while now and am delighted with it’s performance. I only have the standard 5800X so you’ve got me beat there (lol) but the 3080ti is a monster performer and you should be able to grab a bargain as people hit the 40 series cards which I think are vastly overpriced and sure, I’d like one, but with almost maxed out lod sliders and 79fps the sim looks fantastic.
I paid msrp for my card, but by looking around I’m sure bargains are out there now. Happy shopping!