a good video to watch near end he states flat out the haswell 4770k oem cooler cant cool the CPU at stock and causes thermal throttling and a corsair h100I barely is capable of keeping it below the point of thermal throttling on stock clocks under heavy load like 5c-10c from thermal throttling.
stock cooler stock clocks / settings still overheating and throttling http://www.youtube.com/watch?v=gqr06oL_hwk
add to it many have found haswell to actually draw more power than theyre previous Ivy Bridge even at stock settings which is a bit puzzling given Intel has tried to force feed us that it uses less and is far more efficient across board yet it literally puts out 10%-25% more heat than Ivy Bridge or Sandy Bridge and draws more power across board even under idle this has been found to be the case for a 5%-10% performance increase
yes the VRM's add alot of the heat but still also you need to factor in that in general most cant overclock the haswell because of chip limitations not just temps and when there are limitations on a oem stock clocked one where it downclocks due to thermal reasons on stock cooling and nearly does it on a corsair h100i i find that a bit telling as to why these are often refered to as a miniature nuclear reactor when attempting to cool them and keep temps in the safe comfortable range.
PLZ dont chime in about deliding the haswell not many will do this or take the risk the ones that do are in the single digit percentage range.
most wont take a razor blade to a brand new chip and risk nicking the PCB and ruining the chip and also plainly showwing you voided warranty also the other route often referred to as the vise and hammer method when anyone mentions a hammer and vise about any expensive / sensitive electronic component i get chills and so does most of the rest of people.
I take the above deliding methods ( the most commonly advised ways ) like a person advising slapping a 250hp shot of nitrous onto a brand new car it will likely turn out bad and cost you dearly either way.
because of the thermal issues and also the limitations within the general retail haswell yeilds most cant overclock past stock even when on higher end liquid cooling do you not see this as an issue and some are lucky to run at stock clocks without thermaly throttling.
im sorry i see this as a flaw when a CPU cant run stock clocks / settings on stock cooling without thermally throttling period which meens it downclocks and then you loose whatever benefit you got from purchasing the haswell over Ivy or Sandy and in most cases has been found to actually draw more power during idle and load than IVY or sometimes even Sandy.
http://www.bit-tech.net/news/hardware/2013/06/06/haswell-heat/1 http://www.pcpro.co.uk/news/382267/intel-haswell-hotter-and-slower-than-expected http://www.digitaltrends.com/computing/report-intel-haswell-processors-prone-to-overheating/