Thick fans better?

So I'm going to buy some new fans and I've heard a rumour that a thicker fan is better than a thin one due to static pressure. Now I'm not going to pretend to understand static pressure because I'm too tired to go look it up atm.But the basic idea I got from a friend was because it's thicker it can push more air and suffers from less turbulance?Because I'm looking for some new fans but the ones I'm likely to be getting are going to be thinner than the ones I currently have. Same size, both 120mm, but the new one is probably going to be 2/3 or 1/2 the thickness. Thick fans better?
yes, it does matter, a 38mm thick fan will probably push more air than a 25Thick fans better?
[QUOTE=''GTR2addict'']yes, it does matter, a 38mm thick fan will probably push more air than a 25[/QUOTE] What if they have similar CFM? Since I'm going for quiet fans. I was thinking of the hiper hiperflow fans or the nexus real quiet fans.But I'm definatly replacing my case 120mm, and case 92mms (92mm with red wings) was wondering if I should go for thick ones (my current are thick, or the well known quiet ones which are quiet.
[QUOTE=''GTR2addict'']yes, it does matter, a 38mm thick fan will probably push more air than a 25[/QUOTE]not neccessaraly, my silverstone fm121 is thinner than the generic fans in my case and pushes about 3times more air. 115cfm vs 32cfm
Even if two fan have similar CFM, they could have differing pressures. Both are two seperate things.While thickness is a big contributor of pressure, fan blade design plays a part in it.When it comes to fans i usually like to read up on it from silentpcreview.com since they have some of the best fan testing methodologies.
If you were to measure the amount of air the fan pushes at neutral pressure, IE nothing in front of the fan, nothing behind it, a 100cfm 25mm fan and a 100cfm 38mm fan will push the same air. But if you put something that would restrict airflow, like the fins of a heatsink in front or behind the fans, the 38mm fan WILL push more air.Hope that helps
Thicker is allways better. ;)
You mean the blades? :? Or the size, i have no idea...................
well think... id go for a good quality thicker cause if i accidently hit the fan its less likely to break unlike some of the thinner ones
[QUOTE=''Mr_NoName111'']If you were to measure the amount of air the fan pushes at neutral pressure, IE nothing in front of the fan, nothing behind it, a 100cfm 25mm fan and a 100cfm 38mm fan will push the same air. But if you put something that would restrict airflow, like the fins of a heatsink in front or behind the fans, the 38mm fan WILL push more air.Hope that helps [/QUOTE] That would only work on a pull though on a rad right? As push that wouldn't make any difference since they'd still be pushing the same amount of air.But since I'm using a pull system on my front rad I'll probably stick my front fans as the two big ass fans and just replace the back 120 and the 90s with hiper fans.
On heatsinks/radiators, 38mm fans are the way to go. For case fans, 25mm units are just fine.
[QUOTE=''RayvinAzn'']On heatsinks/radiators, 38mm fans are the way to go. For case fans, 25mm units are just fine.[/QUOTE] Alright thanks, the 90mms are exhaust, one on the top, one on the back top behind the HDD cage next to the PSU. The 120mm is exhaust on the back.