an i3 2120 or 2100 is only about 30 bucks on ebay these days and would be a big upgrade over the pentium g630 you mentioned before 😛 , it could depend on your hdd or os or even cpu about the radeon settings opening up slow. Tbh I never even open mine up though, I wouldn't worry too much if it takes a little to open it up, just make sure the pc doesn't have any viruses or anything. Or an i5 2400 is even cheap online these days too 😛