GPU upgrade for Davinci Resolve?

My system currently has an RX580 which I'm quite happy with. I just wondered if there were any GPU update recommendations that might help me get better editing and general use improvements in Resolve?

Thanks

Your RX580 is a bit dated.
If you've running Big Sur 11.4 or later, you can use cards that are based on the AMD Navi RDNA2.
Any of these will trounce your RX580, AMD Radeon RX 6800, AMD Radeon RX 6800 XT, and AMD Radeon RX 6900 XT

Just make sure you buy a dGPU that will fit in your ITX case and your PSU will support.

As the higher end 6000-series cards listed above are quite long, some with triple fans. They all require a PSU of 700W as a minimum, the RX 6900 cards require 800-850W PSUs.

What length card can your case accommodate?
What is your current PSU wattage?

Thanks both. I have a 1000W SFX PSU on the shelf to replace my current 650W unit, but will check lengths as you suggest.