What is it should i take it off, is it some protective covering?
There is this blue gelly thing on my core of my 3000 barton, what should i do, should i just leave there and apply thermal grease?
If it is like a caulking bead around the processor core but not on the core itself then leave it alone. The face of the processor core should be clean and you'll be able to see identifying marks on the processor core.
This is different from a thermal pad (the pink "goo") that is usually found on the bottom of heatsinks.
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If he's referring to that glue-like stuff around the core, it's most certainly not a gel...
This is different from a thermal pad (the pink "goo") that is usually found on the bottom of heatsinks.