Needed: 120mm, sleeved, ~80CFM

dobbz · Post by **dobbz** » Sun Jan 02, 2005 1:54 pm

I've got a Papst 4312MV Variofan that I run at ~10v (removed the thermistor) from a Sunbeam rheobus, and I think it's great for the airflow I get-- I actually don't mind 35dB inside my case.

I need another one for an XP-120, but I can't pay $30 for a fan again. I was wondering if there is any other sleeved bearing 120mm fan that can put out ~80CFM at 30-40dB, and not click when I want to bring the speed/noise down.

Post by **Ralf Hutter** » Sun Jan 02, 2005 2:01 pm

What the heck are you trying to cool that needs an 80CFM fan on an XP-120??

(for comparison, I'm running a Globe 120L @ 5V on an XP-120 to cool a 3.0C P4 NW. I'd guess that it's putting out around 15-20CFM max)

dobbz · Post by **dobbz** » Mon Jan 03, 2005 1:11 am

I'll be overclocking the mobile. I'll find the point of diminishing return when raising voltage and fan speed, and I'll be leaving my fan wherever it needs to be to keep the chip cool at that voltage point.

I know there are probably zero overclockers on this board, but I kinda like to collect fans and this is where I get all my info when I need a good one.

dobbz · Post by **dobbz** » Mon Jan 03, 2005 1:27 am

I guess I won't need 80CFM. But this Papst does do 80 and I can almost ignore the noise. Of the Panaflo, Nexus and Enermax 120mm's I've used, this 4312MV has the best flow/noise ratio by far. I'm just looking for something similar for a little less money.

burcakb · Post by **burcakb** » Mon Jan 03, 2005 2:25 am

dobbz wrote: I know there are probably zero overclockers on this board, but I kinda like to collect fans and this is where I get all my info when I need a good one.

Actually, there are quite a few overclockers here and a whole lot more ex-overclockers.

It's just that overclocking for bragging rights doesn't always go with the quest for silence. You can achieve good overclocks with a mobile while still keeping things quiet and none of this requires even half the cfm. Chips will take a lot more beating than you'd expect and in all probability you'll hit the max overclock of the chip before you hit the thermal limit.

Tiamat · Post by **Tiamat** » Mon Jan 03, 2005 3:32 am

You may want to consider the Globe 120s. These will give you the CFM if you need it, but will also quiet down when you dont. I am both overclocking and running a quiet system - its very possible even without water cooling! You just have to be able to accept 5-10C higher temps which is fine as long as you dont touch 60C.

The Instigator · Post by **The Instigator** » Mon Jan 03, 2005 9:27 am

For what its worth, my P4 2.4c is running at 3.3Ghz at 2.65V. Idle temps are 28c and full load is 40-42C. Im running an xp-120 with a nexus at 5V and I cant even hear it. Im overclocked and overvolted and still dont need a lot of cfm to stay cool and VERY quiet

Edward Ng · Post by **Edward Ng** » Mon Jan 03, 2005 9:32 am

The Instigator wrote:For what its worth, my P4 2.4c is running at 3.3Ghz at 2.65V...

Are you sure you don't mean maybe 1.65v?

The Instigator · Post by **The Instigator** » Mon Jan 03, 2005 9:36 am

Youre right..I was thinking of memory voltage. 1.65 V on the CPU