Hello together Markus here good morning. This is my system, mainboard msi B450, AMD RYZEN 5 3600, with 16gb RAM corsair RGB, the case is, corsair 220T with 3 Fan,s, looking for up to 300,.Euro a new graphics card, the power supply is from Seasonic 550 Watt full modular 80 Gold. Does anyone have a tip for me. My board only has 3.0 PCI E. Many thanks in advance, Markus W.