I'm thinking of getting a gtx 1070 and an i7 to go along with it I just don't know what power supply I would need, I've already got a power supply but what is the limit for the cpu and gpu I want?
generally in your case a 650W PSU would be the one to aim for.
But you have to also make sure that you get a good quality PSU and not a Cheaply built one. something along EVGA G series would work great. Rosewill Hive, some Seasonics. There are plenty of choices
generally in your case a 650W PSU would be the one to aim for.
With a 1070 and I7 a 450W is usually the norm, but we really need his full specs and to know how much he's going to overclock to make a more precise determination.