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Is it possible to get a bigger fan on a 50mm heatsink?

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Johan45

Benching Team Leader Super Moderator
Joined
Dec 19, 2012
What about a 92/80mm to 50mm fan adapter/reducer
 
OP
Stratus_ss

Stratus_ss

Overclockix Snake Charming Senior, Alt OS Content
Joined
Jan 24, 2006
Location
Ontario Canada
What about a 92/80mm to 50mm fan adapter/reducer

Thats kind of what i am looking for but I haven't found any for 50mm, i have found a bunch for 40 to 60 and 80 to all manner of sizes above it. I'll keep hunting with the word "reducer" because i didnt know the terminology before
 

Johan45

Benching Team Leader Super Moderator
Joined
Dec 19, 2012
That's kind of what my seach came back with. I also noticed 3D printable if you have access or a friend maybe you could make one custom
 
OP
Stratus_ss

Stratus_ss

Overclockix Snake Charming Senior, Alt OS Content
Joined
Jan 24, 2006
Location
Ontario Canada
That's kind of what my seach came back with. I also noticed 3D printable if you have access or a friend maybe you could make one custom

Thats a good idea i do have access to people with 3D printers
 

trents

Senior Member
Joined
Dec 27, 2008
Are there after market coolers available for that socket? I'm thinking probably not since it's a server board.
 

notarat

Member
Joined
Nov 11, 2010
I'm a little late to the thread but have you hopped online and looked at your local makerspace? (the 3d printer guys usually have a dedicated building/space for meeting up and hanging out. If you hook up with them you can get someone to 3D Print an adapter for you.

I made my own adapter (50mm to 30mm) for my MP Select Mini that works great.



I am considering this board right here: https://www.newegg.ca/Product/Product.aspx?Item=N82E16813182964

However I read the 50mm fan is stupid loud so I was wondering if it is possible to rig something up with lower rpms but more airflow.

Appreciate any and all feedback
 

orion456

Member
Joined
May 31, 2004
A fan reducer will not work as you expect. I did a number of experiments on fans with reducers and what I discovered is that a bigger fan blowing on a reducer loses a lot of its air flow because 90% of the air is moved by the outer part of the fan. But the outer part of the fan is blowing on the sides of the reducer. The sides of the reducer then reflect the air away from the downward direction and actually impede the flow of air towards the heat sink. Worse, the center of a bigger fan is usually blocked by a bigger hub and you get even less air going down the center. In effect, the reducer will make the airflow less than you would have had with the 50mm fan. The reducer also increases the back pressure against the flow of new air into the reducer and makes it even harder for air to reach the heatsink. Finally, a fan is most effective when air turbulence is close to the heatsink's surface because turbulence causes a lot of air to hit the heatsink fins and extract heat. A fan placed well away from the heatsink will not have turbulence but instead it will produce a more laminar flow which had dramatically less heat removal ability.

A better option is to use two fans on the 50mm heat sink. The fans are glued side by side and placed so the two hubs of the fans are over the edge of the heat sink. This way you get maximum air flow at the center of your heat sink. The two fans can be used at slower speeds because the airflow through the heat sink is greater, and the two fans cool other components outside the cpu heatsink. In that configuration I would recommend reversing the fans so they suck on the heatsink and remove hot air as soon as possible. Add a duct made of cardboard above the fans and you avoid churning of hot air back into the fans.

Here is some more info on fan configurations:

http://www.overclockers.com/forums/showthread.php/344236-Fan-CFM-loss-due-to-fan-adapters

http://www.overclockers.com/forums/...ool-amp-quiet-3-84ghz?highlight=parallel fans

http://www.overclockers.com/forums/showthread.php/319423-Heat-sink-fan-comparison-tests
 
Last edited:

maxfly

Member
Joined
May 7, 2005
how about your choice of two of these https://snakeclamp.com/ and a pair of yate loon 120s or 140s. That should keep the whole board chilly. i did something similar with an 80mm heatsink. i pulled the 80 and replaced it with a 120mm on a goose neck connected to the case. i ran it that way for 3 or 4 years before upgrading the rig.