Howdy. I've very green to pc building. Built my 1st one quite a few yrs back with an amd fx 6300 (6core 3.5 ghz) cpu, 8gb ram, 500w bronze power supply & a gtx 960 gpu. It's worked great for years. Trying to get into some newer multiplayer stuff with friends & it's pretty rough. Is just upgrading the gpu feasible? I hear a lot about "bottlenecking" ...If I'm not looking for anything but decent/budget, can I just slap in a gtx 1660 and be fine for awhile longer? Or is it better to start a whole new rig due to the older cpu/mobo/etc? Thank you kindly.