I have an old Dell Dimension E520 and the upgrade options are looking good to play esports games, and valve games. So I want to upgrade to like a HD 7770 (because im on a tight budget) and my state doesn't allow me to get a job for another year. So my current budget is about 100 dollars, and I have this old dell dimension. Its able to be upgraded with any gpu, a core 2 quad, 8 gb of ram, but im not sure if this can run on my current psu. Also, if I am able to keep the psu, i will probably go for a GT 1030 instead. I don't know how much wattage it is, but heres a picture of the sticker on it.