Just delid my 6700K and got a drop in temps of around 10C.
Just used mx4 between die and ihs and waterblock.
now running around 50C using prime95.
Used razor blade method and was very easy to do.
Replaced IHS but not bothered to glue it back down just left it floating.
I am having the same issues with my E4300 and GA965P-DQ6 Mobo.
My TAT temps are typically 12C higher than Coretemp readings.
Full load reading 67C with TAT while Coretemp reads 54C running at 3150Mhz with Water cooling.
I ran the new Speedfan and this ties up with Coretemp.
Here is a link to...