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Unread 12-28-2004, 01:18 PM   #7
Tempus
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Join Date: Jul 2003
Location: Michigan, USA
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In case the big differences between the BI Pro and Extreme haven't been made clear - its about the thickness of the unit and (i believe) the # fins per inch. The extremes are thicker and more dense and require a more powerful (and louder) fan to get full potential. however the cooling potential of the extremes are significantly higher than the pros.

You didn't really mention what your performance goals (OC wise) are. If you are just after quiet (or just a lessening of the torrent of noise) then a single 120mm x 120mm radiator should work okay for you.
I have a 3.2gig P4 and a 9800Pro going off a single BIX in my lanboy case. The exhust air is very hot but its quiet and OCs very well.

The northbridge of the 875 isn't really a heat producer. There is some but its not a significant contribution. However it can be a very restrictive place for a block so watch yourself there. I didn't notice any benefits on cooling mine and have removed it from the loop and replaced it with a larger passive cooler.

If you plan on running at or near stock for both the CPU and the VC then a single 120mm rad will be enough, assuming you are using a fairly decent fan.
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