Definitely get an Nvidia GPU for blender. Something like this would be great:
https://smile.amazon.com/dp/B08XQZP4T9/ref=cm_sw_r_cp_apa_glt_fabc_E2V0C0TEGB8YGPQ898QQ
You can get a pc with a 3060 for cheaper than this, if you can find it in stock. Make sure to watch r/buildapcsales
SkyTech Archangel 3.0 Gaming Computer PC Desktop - Ryzen 5 3600 6-Core 3.6GHz, RTX 3060 12GB, 1TB SSD, 16GB DDR4 3200, RGB Fans, AC WiFi, 600W Gold PSU, Windows 10 Home 64-bit, White https://www.amazon.com/dp/B08XQZP4T9/ref=cm_sw_r_cp_api_glt_i_TPWFYC6FCRDTY36396H3?_encoding=UTF8&psc=1 I’ve upgraded CPU & Cooler but I was very satisfied with this out of the box for the price.
Rtx 3060 pre-built for 1624.99
https://www.amazon.com/SkyTech-Archangel-Gaming-Computer-Desktop/dp/B08XQZP4T9