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Could I use 92mm instead of 120mm?

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NiTrO bOiE

Member
Joined
Dec 15, 2002
Location
Charlotte, NC
I have 2 deltas (92mm) and I have them hooked up to my nexus so they are quiet. I was wondering if it would be a good idea to just keep these and run push/pull config, and if I feel the need for extra cooling I could just crank them up to the full 12 volts since I'm pretty used to the noise by now. I was also thinking of finding a 92mm to 120mm adaptor and that would be my shroud.
 

johan851

Insatiably Malcontent, Senior Member
Joined
Jul 24, 2002
Location
Seattle, WA
For what radiator? 92mm's will have a higher static pressure than a 120mm fan, so in a push/pull config you should do alright. Not as good as a 120mm's airflow, but as long as you have decent amount of air moving through the radiator it'll be fine.
 
OP
NiTrO bOiE

NiTrO bOiE

Member
Joined
Dec 15, 2002
Location
Charlotte, NC
It's for the Pro-core radiator from dtek. I want to keep them so I won't have to re-cut the front intake for my case. And I was going the use a spare 80mm for an exaust fan.
 

FIZZ3

Member
Joined
Jun 27, 2002
Location
NL, Europe
Well I would think the 92mm's would do a worse job of covering the fin area of the core than 120's would. If they put out less CFM than 120's would as well, then you're facing a decided decrease in cooling potential. How much is hard to say, but it's going to be a trade-off for sure. Airflow of the core is one of the biggest factors in watercooling efficiency.
 

sandman001

Just Freeze It
Joined
Mar 11, 2003
If you make a shroud you'll be fine.

If you don't, you'll be hurting performance some.
 

johan851

Insatiably Malcontent, Senior Member
Joined
Jul 24, 2002
Location
Seattle, WA
Exactly, maybe I wasn't specific. As long as you're using a shroud, there shouldn't be much of a performance tradeoff. If you don't...it's definitely a bad idea.
 

FIZZ3

Member
Joined
Jun 27, 2002
Location
NL, Europe
sandman001 said:
If you make a shroud you'll be fine.

If you don't, you'll be hurting performance some.

A shroud may indeed help, but the main thrust of the smaller fan will still not hit the outer edges of the fin area very well- I think a larger fan would do better.
If you make the angle of a shroud too steep, performance isn't enhanced much anymore.