This cant be right...

Air Flow 78 CFM is THE best i've ever seen, although Noise 21 dBA ISN'T, but i'm sure in conjuction this can't be right as ususlly the more air a fan pushes (usually down to RPM), the louder it gets... I'd say it's BS... :o
 
Legless said:
Air Flow 78 CFM is THE best i've ever seen, although Noise 21 dBA ISN'T, but i'm sure in conjuction this can't be right as ususlly the more air a fan pushes (usually down to RPM), the louder it gets... I'd say it's BS... :o
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well the best excluding delta fans which if you get, you may aswell have your window and a wind turbine blowing air in :rolleyes:
 
You have to take all these fan specs with a pinch of salt, as each company does THIER own tests, and quote their OWN results... So they fudge the specs a bit... :mad:
 
Gonzo0 said:
http://www.thermaltake.com/product/DCfan/Standard/a2368/a2368.asp

P/N A2368
Fan Dimension 120 x 120 x 25 mm
Started Voltage 6V
7V Max
Rated Current 0.38A
Power Input 4.56W
Fan Speed 2000 ± 10% RPM
Max. Air Flow 78 CFM :eek:
Max. Air Pressure 2.97 MM-H2O
Noise 21 dBA :eek:

That amount of air being pushed and only that amount of sound. Surely thermaltake are lying. If not then i must get this fan :)
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Might be almost right, maybe not quite though.

http://www.overclockers.co.uk/showproduct.php?prodid=FG-000-XI&groupid=701&catid=57&subcat=4

Look at the above fan the specs are similar. Maybe thermaltake just found a way of making them quieter :)
 
Interesting find, same noise, but the Thermaltake pushes out an extra 10CFM... Must be some new fin arangement? :confused: If it is true (i still have my doubts), this could be THE fan to get... :eek:
 
It isn't true, it isn't a new anything. They have been quoting the same BS specs for years. Same goes for the Xilence, ask yourself why would it be able to push 50% more air at the same speed as the Akasa Amber (about correct CFM rating, wrong Db though) with basically the same design?

Yate Loon are the only company (Nexus use Yate Loons) that give accurate ratings, the Noctua fans and Aerocool turbines are close but not as accurate.
 
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I've used Akasa Ambers for years, nice and quiet, but a see many companies spec their fans push more air? Is this true? Should i stick to the Akasa Ambers or change them, as i do think they are very quiet, but if others offer better cooling, im willing to change... :)
 
My guess is that it's 78CFM at 12V but 21dBa at 6v or 7v depending on what it runs on. Hence why it says "Max. Air Flow". I've heard of manufacturers doing this before and I'm sure they'll do it again.
 
St0rmer66 said:
My guess is that it's 78CFM at 12V but 21dBa at 6v or 7v depending on what it runs on. Hence why it says "Max. Air Flow". I've heard of manufacturers doing this before and I'm sure they'll do it again.
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+1
 
Good guess St0rmer. First thing I saw when I read the specs was 'max'. Sure.. when you push a tonne of volts through it ;)
 
Keep an eye on the RPM of fans, all things being equal with no irritating motor noise, most fans will be in a reasonably similar noise range at a set RPM.

So if you see a 2000RPM quoted at 20Dba, that really IS bs, especialy when the S-FLEX 1200RPM is rated for the same noise level.
 
be warey, some fans make "interesting" noises when undervolted. 80mm delta EHE for example burbles when at 5V (otherwise very quiet and still high airflow) and will make a squeaking whistle on very low (~3v) startups "sqveeeeeeeee nick nick nick nick nin i ni ni ii i i i" is the best i can describe

i would assume TT have avoided this however :)
another vote for the spl reading comming from min speed, and the airflow from max speed..
 
St0rmer66 said:
My guess is that it's 78CFM at 12V but 21dBa at 6v or 7v depending on what it runs on. Hence why it says "Max. Air Flow". I've heard of manufacturers doing this before and I'm sure they'll do it again.
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I agree with that man!
 
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