and which gpu would you reccomend me to buy with ryzen 3 2200g?I would reccomend the Ryzen 3 2200g system. The CPU and IGPU will perform better than the Athlon 950+730. The 2200g is more modern than the Athlon 950 aswell.
For a ram upgrade, I would concider putting in a 3000mhz 2x4gb kit if your current ram is slow. If your current ram is 3000mhz or faster, id buy another identical kit.
IGpu and cpu performance is dependent on ram speed.
Faster ram = much higher performance.