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post #101 of 476
Thread Starter 
Rosewill Clear LED Case Fan
This is the other Rosewill fan I pulled from my son's Rosewill Challenger case. It did better than the black version in noise level to my surprise, but still not very good... It looks nice..

NOISE LEVEL/CFM
Above average. Not quite as high as the black variety, but higher than most fans and a fair amount higher than the yate medium.

NOISE QUALITY
Has a strong motor tick present at all levels.

RPM
Has no RPM wire..

RANGE
Similar to the clear LED yate, the range is very small. While I don't have RPM data (it came without a wire), it was a fair amount smaller in range than the yate medium.

OVERALL
Very small range, higher than average noise level, and fairly poor noise quality. Looks nice though..

VIDEO LINK





    
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post #102 of 476
Quote:
Originally Posted by Martinm210 View Post
Thanks!

I think I got that Pana tested just the other night. I should have results for it done this weekend. This is the one I have:

http://www.svc.com/fba12g12u.html

I have one, does that count?...
Great! I didn't know you were going to do any of the fat fans.

Oh yeah Man even one Pana U will get you in the cool kid club......

You know I have some of the silly things that have to be 12 years old by now, I don't think one has ever died on me.

I've broken the blades off a few but I could screw up a ball bearing with a rubber mallet if left to my own devises long enough...
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post #103 of 476
Thread Starter 
Quote:
Originally Posted by ira-k View Post
Great! I didn't know you were going to do any of the fat fans.

Oh yeah Man even one Pana U will get you in the cool kid club......

You know I have some of the silly things that have to be 12 years old by now, I don't think one has ever died on me.

I've broken the blades off a few but I could screw up a ball bearing with a rubber mallet if left to my own devises long enough...
Yeah, I've got the Pana and the UK3 I should have results for soon. I've also got one of the 150CFM deltas on order..

On my old setup, I had trouble with the high speed fans because my anemometer vane would start rattling, but no problem with my new hotwire setup.

I'm typically only hitting around 4-500fpm with most fans and it's capable of measuring up to 3,940....so BRING IT ON!!..
    
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post #104 of 476
Thread Starter 
FYI,
I retested my Wonky GT15 as part of this batch 4, and this is what I got. I first ran through with my 1V normal increments, then I went back and specifically tried to pinpoint the resonance RPMs. They are there, and hopefully it's just this wonky sample I have. I found roughly 6 strong 3-4dbA resonance points that are very isolated. Rolling off the voltage by .1V is usually enough to make it go away.

Hopefully this is just this sample and it's from sitting on the shelf too long. I won't include this in the round until I've had a chance to try Vapor's samples. The 14 didn't seem to do this, although I didn't go back and check like I did this one:



And this is how the last two GT15 and the two GT14 tests compare. Fairly comparable down below 25CFM, but the two GT15 test were still off by a good 3CFM at 12V...something is off with it's bearing I think..just can't get two test to match up.



Makes me wonder if the frame change in the new batch was to eliminate these spikes or if it was for something else..
    
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post #105 of 476
Thread Starter 
Panaflo NMB-MAT FBA12G12U Ultra High Speed

I've had this one in my collection for a while, thanks to Hondacity..

Gotta throw in some of the super high speed fans in there. Now that I've got the hotwire anemometer, there's really no limitation. It can read up to 4000 FPM, so no problem with the high speed stuff.

NOISE LEVEL
On the low end was slightly higher than the Yate, but up higher was about average, seems to follow the pack trend pretty well, although it does extend that CFM line a ways out there, it is built for one thing...HIGH FLOW.

NOISE QUALITY
This is an excellent example of why noise level alone doesn't cut it. These high speed fans are not meant to be undervolted and have an extremely strong motor tick. Looking at the NOISE LEVEL graph alone you could conclude that running this fan 7V would give you roughly the same thing as a yate medium at 12V. Noise level yes, noise quality..NOT EVEN CLOSE. The fans are all generally made to perform optimally in one area, very few actually do well everywhere, and this one is no different. I would not recommend undervolting this fan below 9V, the motor is extremely ticky at low volts.

**Bing has noted that a good PWM controller may go a long way in eliminating the motor tick. I will check into this. If I can build a remote (no computer necessary) PWM controller, I will retest..

RAW POWER
This fan is built for power. Were the yate medium is cranking out 32CFM through the radiator, the Panaflo is pushing 51 CFM at 12V. Almost twice the air flow.

OVERALL
This fan is a power house, but it's not one you want undervolt because of stong motor tick. If you want raw power and really don't care much about noise, this fan fits the bill nicely. But in light of the whole noise quality thing, it's a pretty gritty/ticky fan undervolted, but smooths out pretty well by the time you get to 12V.

Bottom line, huge raw power with average noise level per CFM but not a good fan to undervolt (noise quality suffers below 12V). She likes 12V...so give her what she wants or she'll chop your finger off..

VIDEO LINK






Edited by Martinm210 - 11/13/10 at 9:23am
    
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post #106 of 476
Quote:
Originally Posted by Martinm210 View Post
NOISE QUALITY
This is an excellent example of why noise level alone doesn't cut it. These high speed fans are not meant to be undervolted and have an extremely strong motor tick. Looking at the NOISE LEVEL graph alone you could conclude that running this fan 7V would give you roughly the same thing as a yate medium at 12V. Noise level yes, noise quality..NOT EVEN CLOSE. The fans are all generally made to perform optimally in one area, very few actually do well everywhere, and this one is no different. I would not recommend undervolting this fan below 9V, the motor is extremely ticky at low volts.
Huh. This is the opposite of what I can report with my U1BX... it's very smooth and only ticks once I get it to about 5 volts, and even then I can barely hear it. Would you test an actual U1BX at a later time?
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post #107 of 476
Thread Starter 
Quote:
Originally Posted by Chunky_Chimp View Post
Huh. This is the opposite of what I can report with my U1BX... it's very smooth and only ticks once I get it to about 5 volts, and even then I can barely hear it. Would you test an actual U1BX at a later time?
Sure.

I no longer have my medium speed Panaflo, but both samples I've had were really ticky when undervolted.

Perhaps I just have bad samples, but I think they are meant to run at 12V. They smooth out pretty well at 12V, but the two I had were both rough undervolted.
    
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post #108 of 476
So much for the fat fans not showing their power on this rad
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post #109 of 476
Thread Starter 
Quote:
Originally Posted by Chunky_Chimp View Post
Huh. This is the opposite of what I can report with my U1BX... it's very smooth and only ticks once I get it to about 5 volts, and even then I can barely hear it. Would you test an actual U1BX at a later time?
I think the videos give a good representation of what I'm hearing.
Try starting, then pausing the Panaflo at 7V

Now start and pause the yate medium at 11V

They are both producing roughly the same air flow and noise level. Go back and forth between both fans play/pause fan 1, then play/pause fan 2.

Noise level is about the same, so Noise quality is all that's left which is very subjective..but personally I would much prefer the yate at that performance level myself.
Edited by Martinm210 - 11/13/10 at 12:03am
    
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post #110 of 476
Speaking of going back and forth, are you going to do a mash up of all these?
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