Was not satisfied with the cooling of my new PAL 8045, so decided to get more air flow with a larger fan. The results were not what was expected. I turned fan 45 degrees and built an adapter. Took a lot of time and effort to complete. Installed a Panaflo H fan putting out 103 CFM and 41 dbs. Did not get any extra cooling but really not that much more noise. It seems that more air volumn only helps up to a point and then does not lower temperatures. Next installed a Antec fan. It put out a modest air volumn and is very quiet!! To my surprise temperature was only 1 degree C higher than 80mm fan. The temperature was reasonable and noise level so low that the noisest fan is a 40mm cooling my removable Hard Drives.
So, let us look at the facts: a 80mm turned 3800 RPM @ 37 dbs. The 92mm Panaflow turned around 2500 RPM @ 41 dbs and the Anatec less than 2000 RPM @ a very low noise factor. Based on this; reinstalled the Panaflo and hooked a varable resistor in line. At about 50 ohms the noise level is very low and my temps are better than the 80mm fan.
What sound that is heard ,is a low rumble. The fans could be clasified as; a 60mm a soprano (loud and shrill), a 80mm more like a tenor and the 92mm has a soft bass tone.
At idle my XP 2000+ @ 1700; temps are 38 C and system is 28 C. At full load expect temps will rise to 42-43 C.
So, let us look at the facts: a 80mm turned 3800 RPM @ 37 dbs. The 92mm Panaflow turned around 2500 RPM @ 41 dbs and the Anatec less than 2000 RPM @ a very low noise factor. Based on this; reinstalled the Panaflo and hooked a varable resistor in line. At about 50 ohms the noise level is very low and my temps are better than the 80mm fan.
What sound that is heard ,is a low rumble. The fans could be clasified as; a 60mm a soprano (loud and shrill), a 80mm more like a tenor and the 92mm has a soft bass tone.
At idle my XP 2000+ @ 1700; temps are 38 C and system is 28 C. At full load expect temps will rise to 42-43 C.