So I bought a prebuilt system from Lenovo and it came with a AMD A10-7800 APU which i upgraded by added a gtx 750 to the system. It has 12gb of ddr3 ram but the power supply is bad with only 170 watts. I want to know what to upgrade to. I want to buy a new motherboard and get a i3-7100 with a gtx 1050 ti but i also need another PSU. Would i need to upgrade my ram with that too... cause if so i may just build an entire new system 🙁