I just got an (delidded) i5 4690K that does this (on ambient water(no ice on RAD, just 18-19°C Air!)):
http://hwbot.org/submission/3177426_
Needs 1,32V for XTU 5 GHz.
IMC not checked, ran 1100Mhz 7-10-7 1,72V with PSC RAM not tested any further.
What do you think its worth?