Overbrazil said:
If i dont remove the IHS, the cooling surface of the p4 is totally diffent from the amd core, right ?
the cascade was made with ¨AMD in mind¨, sothereis any difference ?
A more correct statement is this:
The Cascade was made with up to 350mm^2 bare-die CPU's in mind, or up to 250mm^2 die sized IHS-covered CPU's in mind. As one gets greater than these sizes,
peak performance drops off slowly. However there are no bare-die, or IHS-covered-die CPU's that even remotely approach anything as large as 250mm^2.
Either way, the block does the job as well as it possibly can when working IHS CPU's. The issue is that the IHS gets in the way of cooling a CPU for
any waterblock.
A P4 bare-die is roughly 12x12mm in size (147mm^2). And AMD Barton die is roughly 14x7mm in size (102mm^2). Both CPU die sizes are happily accommodated by the Cascade's operation.
If you are getting different results with different mounts, there is one of two things going on here:
1) Different mounting success. Easy to get ~5C variations through good/bad mounts
2) The thermal goop between the P4 die and the IHS is starting to develop issues. Many may not know this, but Intel actually specifies that the P4 CPU with the IHS is only consistent for 30 mounts. After that, Intel does not guarantee that the thermal goop layer between the P4 CPU die and the IHS will remain consistent.