There is also the option of purchasing a third party fan instead of what each firm supplies. I have a variable speed Enermax that has a manual dial to run it as slowly as 1K RPM and as fast as 3K RPM that I plan on using. Since it's a fatter fan (still fits — you just have to break off 4 corners on one side) it should provide plenty of air flow at the low speed. It's model UC-8FAB-B with two ball bearings. Appears to be extremely quiet. But haven't done my upgrade yet. Got sidetracked with a dual 867 MDD for MP3 ripping and expansion reasons. Only $1319 refurbished at Small Dog. They ran out Monday. I know, I know. Noise. But the silent fans upgrade kit is still available for $20 until June 30th. So I really wanted the last MDD that still boots 9 (just in case) before moving into the brave new world of OS X forever more. I guess I'll wait for a dual 970 upgrade next year. Or a cheap dual 1.5 GHz later this year? Whatever. k On Wednesday, April 23, 2003, at 03:04 AM, Bill Wong wrote: > On 4/23/03 4:54 AM, "Joakim Skog" <joakim.skog at home.se> wrote: > >> Has anyone compared the noice from the fans in each upgrade card? Are >> there >> different fans between the models from PowerLogix for example? Do >> Sonnet use >> another fan than PowerLogix, and how do they compare? Any dB numbers >> to >> compare? >> >> /Joakim > Here is my experience: > > Panaflow low speed fan: > > Sonnet 1.25 GHz Single > PowerLogix 1 GHz single > > Panaflow high speed fan (noisy): > > PowerLogix Dual 800 > > The both use the Panaflow 15 mm height fans, which comes in low and > high RPM > version. I prefer the low speed fan because of the noise factor. > > Bill