Guys, what is the highest hashrate we can achieve with a gtx 1070? I'm at 503 h/s at 60ºC with gigabyte g1. Please tell me your clocks too

Please tell me how did you managed that. I'm with G1 too, but having 450 only

I would also be interested since this is probably a record

I got to 480 at maximum and only on two cards i have. Other usually stop at around 465.
I just tweek my card a little bit, didn't mess wtih core voltage, only tryed to push clocks one time, and as it gets stable for more than 2 days, I was asking you if is possible to achieve more stable hashrate.
I just pushed in msi afterburner core to +150 and memory to +700

You can't mess with core voltage anyway, it's locked on any 1070, your overclock seems ok, try to see if you can't do 160/600 instead, Zcash is more core dependant. Otherwise try to find the balance between hash & power if you pay for it. For me it's about 110w (60% tdp on my design). Also 2 days is pretty stable.