This computer already seems to have a good wifi/bluetooth cater (802.11ac 1*1 + BT5.0). It is not easy to change it and this can cause compatibility problems when updating the bios for example. A laptop is designed to work optimally with the embedded hardware, it is not a desktop PC on which you can change almost anything you want! Unless you are a more than advanced user, both hardware and software wise, I wouldn't advise you to change it! I'm not sure if it's a 4 core CPU or not, but I'd be looking at a 7nm CPU with 6 or 8 cores, if it's available from AMD. The 512Gb ssd is also a bit limited, 1TB is a big minimum for the way I use it. The Dell's XPS are very good machines. I'm looking forward to hearing from you.