I follow your logic up to the last $ 130 - as the first $ 130 was for a CPU. Also some of the 5770's were getting some questionable reviews (newegg) esp with overclocking... However I understand that card is much better tha my current card. If I went this route, when should I change out my MB? - if at all.
I dont know what you mean.
In my chart/plan, the first upgrade was Cpu cooler, GPu, and PSU.
The last was a new CPU.
I would keep the mobo.
THe 5770 is a fine card, ignore Newegg rewiews, those poeple are morons.