You cant be bothered because you have no basis for it lol.
If you had read the OP's requests they are trying to get into a gaming PC as cheap as possible, they didnt say i have a thousand dollars they listed a budget range between 600 and 1000.
As we all know CPU's have not come up in power much the past few years, it is my assessment that they should keep their very good 3570 CPU and simply add a graphics card, it would make a world of difference in the games they are playing.
If they want to build a PC that is completely fine, but it would not be a wise price/performance situation for them over simply buying a 1050. I can also understand wanting something that looks new, in that situation i already suggested they could find a used motherboard on ebay and keep their 3570 and ram, and just buying a new case etc. But the one thing they shouldnt be doing is buying a PSU and a 1050.