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What is the best PowerMac G4 MDD CPU fan that I can easily find?

reddrag0n said:
I have all my fans except the psu fans and cd fan hooked up to a fan splitter. Takes the load off the logicboard. And with those there are no wire mods, just noctua fan resistors on some of them. The silenx fan is hooked up to the cpu header and gets a full 12v and is very quiet and pushes a crapton of air
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I revisited this project recently, even though I was skeptical about the effectiveness of my G3's retrofit. I ended up finding the SilenX fan on Amazon of all places, and the price was fair.

Two things I noticed, though: it's shockingly loud at 12v (and even 7v), and it pushes a surprising amount of air towards its edges instead of straight. Another thing I noticed is that the OEM fan has very good static pressure, while this one has what is probably average static pressure. This part especially concerns me, because I am worried about this less efficient airflow. The fan is against a heat sink after all. With the G3, its 90-degree air duct seemed to warrant a fan with high static pressure. Although the G4 does not have as restrictive of an air channel, it still seems that the air still needs to squeeze through a lot before it's expelled. Or maybe I'm wrong and Apple was just going overboard with cooling fan specs during the PowerPC days.
 
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reddrag0n said:
interesting, my silenx fan is dead quiet
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Are you giving it full 12v? I have mine plugged into the included adapter, to molex, and it's running at full RPM. I tried 7v and it was still very loud. I also feel like the original fan moved a more noticeable stream of air. If I put streamers behind the exhaust side of the case, I would expect they'd flutter a little more with the stock fan than with the SilenX.
 
straight from the original plug the papst was connected to, no resister adapters, just the + & - wires swapped for the plug to fit properly
 
reddrag0n said:
straight from the original plug the papst was connected to, no resister adapters, just the + & - wires swapped for the plug to fit properly
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Yeah, so I would assume it's running at max RPM like mine is. Mine seems just about as loud as the OEM fan, but just less annoying and not rattling.
 
question, is your fan silver or gold colored? i got mine from frozencpu and its a quiet rated fan that's gold in color. i know there was a silver one also out there but i dont know the specs on that one
 
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reddrag0n said:
question, is your fan silver or gold colored? i got mine from frozencpu and its a quiet rated fan that's gold in color. i know there was a silver one also out there but i dont know the specs on that one
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Mine is 90CFM, 1400 max RPM.
 
so same as mine, but mine is dead quiet, with the case open i can barely hear it and it's got full 12v
 
reddrag0n said:
so same as mine, but mine is dead quiet, with the case open i can barely hear it and it's got full 12v
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That's quite disappointing in my case. I knew mine would be running full blast, since I purposefully plugged it in with an adapter to molex.. but I didn't think at 1400RPM it would be so loud.
 
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