NotYou22

I want to build a new computer with a ryzen 2700x Rtx 2060 MSI x470 gaming M7 16 gb ram Samsung 860 EVO 250 gb ssd 1 tb hdd I want to overlock cpu and ram and I will be playing video games and I will try to be streaming on the same computer so I want to know what kind of PCU I will be needing?

I have a 144hz 1080p monitor it does not support freesych

I have a 144hrz 1080p monitor, it does not have free synch

I want to upgrade because I want to upgrade my computer while also helping my cousin build his own computer so I am wondering if I can straight up upgrade my gpu or if I have to upgrade something else first

240 SSD HyperX ssd and a 2 TB Seagate HDD

Hi my computer is running a Ryzen 7 2700, Msi Radeon RX 580, MSI_B450 Tomahawk ATX AM4,16gb of ram, a 550W power supply, and I was wondering if I should upgrade my gpu or if I should upgrade a different part of my computer first. And if I should upgrade gpu what should I get?