All parts were purchased on sale by checking reddit.com/r/buildapcsales . It turns out you CAN fit an MSI RX480 in an SG13, but it's definitely not easy to do. The temps are good during overwatch and ARK on medium/high, stays around 60c for gpu and 60c for cpu with stock cooler under load. Total money spent was about $600.
Great if you don 't plan on overclocking. I got this as part of a motherboard+CPU combination deal. Stock cooler keeps great temps in a case with poor airflow.
Works great, comes with magnetic wifi antenna.
Not easy to fit into this case, although that was obvious since it's listed as 10mm longer than the case allows. Despite this, I found a way to make it fit after about 30 minutes without breaking anything or altering the case. I did take the upper drive cage out, that seemed to help. Got this at jet.com and it runs all the games I play, Dota 2, Overwatch, ARK, above 60fps no problem. If I run ARK on epic it slows down a bit but that also happens on my main rig with an MSI 1070 Pro Gaming X.
Very quiet, very small. The airflow is poor but that is true of any small form factor case. Temps are still within reason, haven't broken 70c yet but I also don't play the most demanding games besides ARK.
500w is probably more than I will need right now because I cannot overclock the non-k cpu but I might upgrade this later so I wanted the higher wattage ceiling.