Aurora R8, Nvidia GPU Upgrade?

About a year ago I purchased my Alienware R8 with an Intel i7 9700 (Non-k) CPU, an NVIDIA GTX 1650 GPU, a stock 850 watt PSU (I believe), and I upgraded both the storage from a HDD to an SSD and I added 16 gigs of Corsair Vengeance Ram at 3200 MHz. I have some questions regarding which NVIDIA GPU's would be the best upgrades for my set up. I am looking to stay in the 600-800 dollar price range. I am nervous that either my CPU or stock Alienware motherboard will not be able to handle a new, more powerful GPU. I was hoping some of the new NVIDIA 30 series cards would work with my setup. Any tips as to which cards would be the best? Any help is greatly appreciated. Thank you.