a nice quiet fan

hey, I've already got my sis, and I'm going through trying to find out where I can cut my noise down, so I'm trying to find a new quiet fan for my water cooling

this is my current one...

http://dtekcustoms.safeshopper.com/19/154.htm?92

and I was either gunna do a 7 volt mod to it, or just get a new one, just wondering if you guys know of any that are quieter, or if the 7 volt mod would hinder performance THAT much

http://2cooltek.safeshopper.com/61/378.htm?758
this ones a whole 2 dba's lowers

I would suggest trying 7 volting both of them and seeing what kinda temps you get before buying a whole new fan.

I think with any fan your going to have to do a volt mod to get it to quiet down.....the best iv'e been able to do is a set of two 120mm fans both with rheostats on them. With that setup I can dial down the noise with the rheos and sleep at night then during lan parties and when the heat goes up I can always crank up the rheos and let the fans go at full speed.

For good High CMF low noise 120mm fans check out both the Sunnon and Panaflo models that are out on the market...you can find them at lots of places...
A good example...

Panaflo
Model FBA-12G12H. 120mm x 38mm. 12v. 5.52 watt, 2500 RPM, 103 CFM, 41.5dbA

41.5db is kind of annoying loud when it's quiet at night....but throw a rheostat on there and you can slow the fan down to a tolarable volume and be just fine temps wise.

Look around...I'm sure you can find some online... PM me if you can't...I'll send you a link to where to find the fans...and how to add a rheostat.

i 7volted my papst fan and my temps only went up around 2*C but i can tell a huge difference in the noise level, its much better now

i acutally use a couple of REAL SLOW 80mm fans only 1900rpms each... they work great for me...

ZoopaMan- The Panaflo L1A does less cfm for the same noise rating as the fan he's currently using. You are correct in saying Panaflo's are very quiet, the fan he is using is the only one I could find at that dba rating that pushes more cfm.

I find the noise from 120mm fans generally tolerable, but that might change over 100cfm.
I chose a Sunon ballbearing 120x38mm 84CFM fan ("only" 2400RPM), but if you want a really quiet fan, here is a nice spec list from Papst:

http://www.papst.de/pdf_dat_e/S23gb.pdf

my fan:

http://www.sidewindercomputers.com/sun12lowspee.html

One thing to think about too is that 25mm thick fans do not push as much air at the same speed as 38mm thick fans... The dtek fan you referenced I'm sure is NOT 30dBa, no way. The panaflo L1A is a 38mm thick fan and pushes 69CFM at 30dba. 30dBa is very quiet and barely noticable.

my evercool 12025 M12S shifts 79cfm and is under 30db, its actually the quiestest fan in my system, including my 2000rpm 80mm's.

hmmm, so if I 7 volt mod this, it's safe to assume that it'd fall to 15-20 dcb's, right? and I wanna try 'n get the ENTIRE comp under 30, any idea how much hd's make, 'n where I can buy quieter once, also what to do about the psu...

I have no idea about how much noise hd's make but I do know that the lower the rpms the quieter and the lower the number of platters the quieter. I have a maxtor 20 gig and I can't even hear it.