I want to build a gaming pc. My budget is around 800. My build includes a ryzen 5 3600 cpu. I wanted to pair this cpu with a 1660 ti at first, Then I saw that the place that i'm buying from is also selling a AMD Radeon 5700 for the same price of 300 dollars. Which one should I purchase? Another question i have is that which motherboard is good for the ryzen 5 3600 cpu ? I was thinking about a GIGABYTE B450 AORUS Elite Gaming Motherboard, but pc partpicker says "Warning!Some AMD B450 chipset motherboards may need a BIOS update prior to using Matisse CPUs. Upgrading the BIOS may require a different CPU that is supported by older BIOS revisions". What does this mean, and what other motherboard should i get for the ryzen 3600?