i get stable 500-550k/h for long term but still i rly would like to incrase it abit seeing ppl with equal to mine gear get above 650k
AGB profile
Minimum graphics, 30-60 FPS max (both background and foreground), fast harddrive, fast internet connection, CROSSBOW, more GF, more disc (you NEED 35 for fastest runs, this build
Demon Hunter - Game Guide - Diablo III) good GF gear on templar.. And 12+ PICKUP RANGE!!!

Must have
I get 605-650 with 319% GF, on a three years old slowish gaming laptop and with a shared 2mpbs internet connection.
Not to mention, restart your computer from time to time. I always get a GPH increase after that lasting a few hours. Use Ghosties loot rules main version ATM, they're still doing over 600k GPH and they loot ilvl 60+ all of it, salvage and sell. So you don't need like "loot nothing" rules.
Also, I have this wierd thing about simply restarting DB and D3, sometimes you get the SAME cellar rate but 100k more per hour after doing it. It's strange, shouldn't be true, but it is.
Also this:
http://www.thebuddyforum.com/demonbuddy-forum/56270-hellcoms-simple-investment-calculator.html
Can help you calc your new GPH with same stats after upgrading GF gear.