I have 64GB (2 x 32GB) DDR4 RAM and 2 x 1TB SSDs. However, my cpu is pretty old at 9th gen i7 which now feels very slow for my work. I only do productivity work, no gaming. So, higher core count matters to me. I also have a rtx 3060.

Looking for suggestions:

With current DDR5 prices, I cannot afford a new build with ddr5.

What are my CPU and motherboard options to recyvle ddr4 rams and the 3060?

Budget < 800U$ (600$ is better)