Current system: AMD FX-6300, R7 260X, 8GB Corsair DDR3, GIG 970A DS3P. 73 yrs old, playing Steam COD games. Want to play Doom 2016 and COD WWII. Is it possible to upgrade current system w/o replacing MB/CPU/GPU? Dell has a Inspiron 5675 today for under $500 with RYZEN 5 1400, Radeon RX 560 2GB GDDR5, 8 GB DDR4 2400 MHZ, 1 TB HDD.