I'm looking to upgrade my Asus G20 With either a GTX 1050 ti or a RX 480 also I need to know if I need to buy another external power supply. The following are my thoughts I personally am looking for a blower style card as space is cramped
https://www.amazon.com/EVGA-GeForce-Support-Graphics-04G-P4-6253-KR/dp/B01MEFABEL/ref=sr_1_1?s=pc&ie=UTF8&qid=1492617246&sr=1-1&keywords=gtx%2B1050%2Bti&th=1
https://www.amazon.com/MSI-RX-480-4G-Video/dp/B01N7OV2WT/ref=sr_1_8?ie=UTF8&qid=1492616921&sr=8-8&keywords=amd+radeon+rx+480