What's the difference between these 4 fans?

Hey guys... I'd like your comments on these 4 fans... What's the quietest, and what performs the best... Thanks.

#1. Delta 11CFM(20mm Tall)
#2. Delta 16CFM(25mm Tall)
#3. Sunon 17CFM(25mm Tall)
#4. Top Motor 21CFM(30mm Tall)

This is for a GeForce2 overclock, so I'm looking for something that will cool down a copper heatsink, but yet, not scream as loud as my FOP38's Delta Black Label... https://www.sharkyforums.com/images/.../2005/06/4.gif

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AMD Thunderbird 1.33GHz @ 1.5GHz (10.5x143)
GlobalWin FOP-38
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Alcatel Speed Touch Home ADSL Modem
13GB Western Digital HD
12x Creative Labs DVD
250MB External Zip Drive
Envision EN-910 19" Monitor
Microsoft Intellieye Optical
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Microsoft Windows98 SE
Philips Magnavox Dolby Surround Sound Stereo System

The 16CFM Delta is 36 dBa which is about 9 decibals short of the acclaimed (or feared?) Black label Delta. 20-sih like 28 dBa is considered "whisper-like." So there would be little noise.

I would suggest the Top Motor fan only if you have enough clearance for your other PCI cards. Don't know if the Sunon 25mm tall fan is louder or not..

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www.mike3d.net - DoD v1.3 and TFC 1.5 Linux

AMD T-Bird [email protected] (10x102)| EPoX EP-8KTA2| 128MB PC133 CAS2| 3dfx Voodoo3 3000@193MHz| Sound Blaster Live Platinum!| 30GB 7200RPM DiamondMax| 4x/4x/24x LG CD-RW| 5x TOSHIBA DVD-ROM| 19" NEC AccuSync 90

Yeah I was reading around, but not only is the Top Motor fan move the most air, it's also the quietest at 33dBa I believe?

Excellent, the Top Motor is my pick now.

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AMD Thunderbird 1.33GHz @ 1.5GHz (10.5x143)
GlobalWin FOP-38
Iwill KA266-R Mainboard
256MB PC2100 DDR SDRAM
nVidia GeForce2 GTS 32MB DDR
Sound Blaster Live! X-Gamer
Linksys LNE100TX
Alcatel Speed Touch Home ADSL Modem
13GB Western Digital HD
12x Creative Labs DVD
250MB External Zip Drive
Envision EN-910 19" Monitor
Microsoft Intellieye Optical
Microsoft Natural Keyboard Elite
Microsoft Windows98 SE
Philips Magnavox Dolby Surround Sound Stereo System