I've intended to post about this, but here's an excellent thread to add to. First, about halving the c.f.m. by using two fans Mike C said that two fans @ 6V move as much air as one fan @ 12V - not fully true. Check the above diagrams from Adda, curve c in the second picture. With one fan, intersecti...

Haven't seen any, but please state your residence, i.e. country, so we know where to point you if we find any.

/ datapappan

I've recently switched from stock cooler to the AC Freezer, and temperatures and sound went well down, drop 10 C / ?? dB. Some have reported the AC fan to wear quickly, mine is two months only so I can't tell. Anyways I recommend it, it's cheap, not very heavy and works wonders with temp. I suppose ...

From what I read on the forums the Prescott runs much hotter. I have the Northwood 2.4 myself, and with the Arctic Cooler Freezer 4 it's a breeze (!) to cool, CPUBurn usually give 55 deg C at moderate fan speeds. Anyway, I bought the CPU last August, and they were not easy to come by even then, but ...

This is probably what happens: - The fan's RPM is controlled by temperature measured at the fan hub. - In blow mode, it senses the temp BEFORE the heatsink, i.e. case temp of perhaps +35 deg C. - In suck mode, it senses the temp AFTER the heatsink, i.e case temp plus temp increase through heatsink, ...

I also did some extensive testing regarding my (cardboard) CPU duct, and the amazing result was that ducting made things worse! The duct was a rectangular box, guiding air from the back grille to the CPU fan top. Then took temperature readings with and without duct, resulting in: CPU temp: Duct +55 ...