Hi, I currently have a pre-built gaming system from Best-Buy. It has an MSI GTX 750ti GPU, an unknown motherboard, and an AMD FX-63?? (which runs at 3.5GHz, and clocks at 3.75GHz). It runs decently with games like CSGO and Fallout 4 (F4 in extremely low settings). I am planning on saving up at least $1500 for upgrades, and I was wondering if it would be worth it to save up for one of the new Pascal GPUs, buy a 970, or save for a 980ti. Also, what motherboard and processor I should save for. Keep in mind, it takes forever for me to make money because my parents probably won't let me get a job.