How much can I overclock the 4570k with the Z87 G43 and 212 EVO?

Solution
Should be able to get to 4.2 with a 212 assuming around 22c ambient and good case airflow. Trouble with haswell is that it's pot luck on what the chip will allow you to get up to.
first of all, get the gigabyte z87x-d3h instead of the g45. if you have it already, keep it. as for the CPU cooler, id at least get a phanteks tc12dx. haswell runs hot and the hyper 212 evo may not be sufficient

every chip is different. there isnt a point of asking how much you can overclock