Hi Serious Putty......The i7-3570k chip in your build has what they call a TJMax of about 105 degrees celsius or 221 F. That is the temp when the cpu will throttle down to save itself and shut off if needed.
That is the chip temp, however. The D14 cooler you picked will do a great job of carting away the heat and sending it out the back of the case.
The problem lies with room temp. If the ambient is 85-90 then the cooler is using hot air to start with. I don't know of any way to estimate what lvl oc'ing will produce what ambient temp. Just too many variable, like an open window, air blowing on the case, etc.
If additional cooling isn't an option I would suggest keeping the oc at lvl 1. Luckily, the HafX case picked is about the best you can get. The other factor that helps is the gtx670. It throws most of the heat produced by the gpu out the back and out of the case. Between the two, the case and 670, at least the heat isn't building inside the case. The case and gpu I have aren't as good as your build in getting the heat out and I have gamed for hours in a 85 F room with no problem. The cpu temps do climb higher obviously, but never close to being a problem. Programs like HWMonitor and EVGAPrecision can be used to monitor it.
Hope this helps.
Edited by bprat22 - 17 May 2012 at 6:57am