No with my 8800gts g92 + 5770 + 5870, sorry forgot to clarify, 200 + 300 - 400 + 30 So around 530 - 630

I'm currently doing 250 MHS and i'm not even sure if that's worth it being I only make 30 to 40 a month... Any suggestions on how to improve or the like? I have no money but if I could sell my graphics card and get a 5870 I could make a good 730 MHS and would be a bit more worth it at around 130 a month.