DONT DO IT ... removing IHS that is... performence with heat loss wont be that much couple of degress if that?.. at risk of killing your cpu completly.. max i think you can do is lap the base of your CPU block and lap the CPU ... but then when you resell your CPU at a later date how they gona know it really is a 6000x2??...

Seems like my zalman res is doing nice atm... 45/43 on both cores about 2 hours into prime 95 with dual threads!... ZALMAN RES = !