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I have to change my heatsink and would like to make sure to avoid compatibility issue on arrival of item.

My Heatsink part# is AT0CX0040R0 DXON 0A 105K.

Would a AT0CX0040R0 DXON 0A 109D fit fine ? I can't find any 0A 105K

Like those two:

-Have you ever seen a heatsink going bad like this: ( ? <--(not my actual heatsink)
The picture is showing the exact same problem im having (warm-cold copper at end just before radiator)

Edited by marccoc - 6/19/13 at 4:50pm