Why delidding? Haswell@stock is faster than the
[email protected]. And you can achieve 4.5GHz with a good air cooler on the Intel CPU.
Together with a $130 MoBo and a 500W PSU when you need a $180 MoBo (990FX-UD3 new revision do not play nice anymore with the FXs), 600PSU at least and a H100 to keep it cool...
EDIT: I am no fanboy at all. My rig plays everything maxed out@1080p (except Crysis 3), but it has a 40%+ OC, when a 2500k would give more FPS@stock.