120mm? Bah, too small! Try a Rotron 172mm@5v pulling 100CFM... It's all about the LARGE overkill fans, plus the design is all aluminum construction, TubeAxial for better airflow and MUCH MUCH quieter than a standard fan. Check out www.comairrotron.com/ Look for "Major DC" fans, I got mine from an electronic depot for around $7!
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XP 1600+ AGOIA-Y (GreenLabel, UNLOCKED!@/ NF7-S 2.0/ PC 2700 DDR
10.5*172FSB(1806/ 1991 high), Vcore 1.792...@84.95Watts
--86' Chevette Heater Core
--1/2" Vinyl tubes
--Via1300-Stealth Mod(QUIET!) 
---Home made copper-tube block
---PVC small internal res
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