Why the X570?
If you are not planning to push the 3600 to its limits by overclocking it to its max,why going with a X570?
B550 will do just fine.
I've edited your build a bit:
PCPartPicker Part List
CPU: AMD Ryzen 7 3700X 3.6 GHz 8-Core Processor ($429.00 @ Canada Computers)
Motherboard: Gigabyte B550 GAMING X ATX AM4 Motherboard ($184.99 @ Canada Computers)
Memory: G.Skill Trident Z RGB 16 GB (2 x 8 GB) DDR4-3600 CL18 Memory ($134.99 @ Memory Express)
Video Card: ASRock Radeon RX 5600 XT 6 GB Challenger Pro OC Video Card ($499.99 @ Canada Computers)
Case: Fractal Design Focus G ATX Mid Tower Case ($69.99 @ Newegg Canada)
Power Supply: Corsair RM (2019) 650 W 80+ Gold Certified Fully Modular ATX Power Supply ($139.99 @ Canada Computers)
Total: $1458.95
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2021-01-10 08:35 EST-0500
Idk what is about your country but even the 1660 super is 800$ which is absurd.
I had no other options that go for the 5600XT,but i managed to put a 3700X in there.
Since you didnt mention storage,im gonna think that ur gonna transfer that from your old build?
Anyhow,thoughts?