Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > Case fan to good t obe true? 69cfm and 18dB

Case fan to good t obe true? 69cfm and 18dB

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - Case fan to good t obe true? 69cfm and 18dB

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jpbg   07-17-2008 at 11:20:12 PM

The Enermax "Magma" Twister
http://www.performance-pcs.com/cat [...] s_id=23806
Specifications:

Model UCMA12
Speed (RPM) 1500
Features extreme operation temperature of 85C
Voltage 12V
Current 0.34
Flow (MAX)(CFM) 69.15
Pressure (MAX)(mm-H20) 1.400
Noise dB(A) 18
Frame Color black
Blade Color red
Dimensions (DxWxH) 120x120x25mm

Fan cable is fully covered in nylon Techflex sleeving and Premium Heatshrink, colors of your choice.

http://www.performance-pcs.com/cat [...] s_id=23806

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Andrius   07-18-2008 at 12:04:54 AM
- 0 +

With that amount of airflow it's going to be loud no matter what the specs say. On the desk it can be as silent as they claim but once mounted inside a case the "obstructions" inside the case will make it noisier.

I use Scythe S-Flex SFF21F (1600rpm model) in my Stacker case and at 1200rpm they are inaudiable. Above 1400 they are still very silent but the airflow isn't inaudiable.
It's rated at 28.0dBA, 63.7CFM, 0.20A @ 1600rpm.

Reply to Andrius
KyleSTL   07-18-2008 at 01:45:08 AM
- 0 +

1500rpm, 18dB?!?!? Heck now!

------------------------------ Lian-Li PC-7B | XClio Greatpower 550W | P4 3.2 Prescott SL7E5 | Scythe Ninja
2GB DDR400 Corsair VS (4*512) | eVGA nVidia GF 7600GS AGP vmod 1.46/1.91 OCd 759/907
WD 160GB & 640GB SATA
WinXP MCE 2004
 Reply to KyleSTL
aevm   07-18-2008 at 01:51:28 AM
- 0 +

I don't believe those claims either, they're too good.

 

Check out this other Enermax fan, it claims 1 dBA. Seriously, just 1.
http://www.newegg.com/Product/Prod [...] 6835214003

 

Compare with SFF21E, also at 1200 rpm, with only 49 cfm (instead of 53), claiming 20 dBA. Incidentally, I use SFF21E myself. These numbers I do believe.
http://www.newegg.com/Product/Prod [...] Tpk=SFF21E

 

I think somebody in Enermax marketing is smoking weed. :)


Message edited by aevm on 07-18-2008 at 01:53:41 AM
Reply to aevm
darkguset   07-18-2008 at 02:05:29 AM
- 0 +

Noticed the (MAX) figure next to Flow and Pressure?? Also there is no notice next to Noise. So the MAX figures might have been taken while at 1700RPM and 28dB noise, while the 18dB noise figure was obtained at 1200RPM and 40CFM.
Why do you think there is no notice next to Noise?
They are not lying, they are just not telling the whole truth!
That is called "Marketing".

------------------------------ With great power comes great responsibility
 Reply to darkguset
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