bestupgradeoption

My son has a CyberPowerPC - Gaming Desktop - AMD Ryzen 3 2300X - 16GB Memory - AMD Radeon RX 570 - 1TB HDD + 240GB SSD - Black. He wants to upgrade it with a new graphics card and a new processor. He says the computer runs slow. I put in another stick of ram to make 16gigs, but there are only...