Which Fan should I buy for replacement?

[mclaren85]

I don't know about the strange lines but the bumps (dimples) are there to help the airflow. Think about a golf ball. The dimples improve distance.

See this MythBusters video.

Then this: Dimple Car Experiment - YouTube

Man, you are awesome. That was a very very important information for me.

 

[claes]

Not even a 10CFM difference between the least performing fan and the best. Would that even be noticeable?

Consider the size of your case and then consider what 10 cubic feet look like. If the average case is around 60L then 10CFM is about the volume of 5 cases of air being circulated a minute.

 

[80251]

Consider the size of your case and then consider what 10 cubic feet look like. If the average case is around 60L then 10CFM is about the volume of 5 cases of air being circulated a minute.

That sounds all well and good in theory, but with all the restrictions in cases (videocards, tower coolers, liquid cooled piping), would that make any practical difference at all?

 

[bobbybluz]

If noise isn't a major issue the Delta FFB1212EH fans are the highest output (150cfm) 120 x 25mm fans on the market. They're not nearly as insane (or as dangerous) as their 252fcm 38mm big brothers. With a bit of looking you can get them for less than $10 each including shipping. I have three of them on an Arctic Liquid Freezer II 360 and they dropped the temps by over 20 degrees F compared to the stock Arctic fans.

There are at least three variations of this fan with the same model number. The ones made in Thailand have the best construction quality. Typical Delta industrial grade server fans with double ball bearings. No RGB (a huge plus for me) and they appear to last forever. I've never had one go bad. I was buying them directly from China and still have several on hand.

 

[mclaren85]

When I removed the front magnetic filter, the temperature were decreased more than 8 degree celsius. But, should I remove that filter? Or, heat versus dust?

If noise isn't a major issue the Delta FFB1212EH fans are the highest output (150cfm) 120 x 25mm fans on the market. They're not nearly as insane (or as dangerous) as their 252fcm 38mm big brothers. With a bit of looking you can get them for less than $10 each including shipping. I have three of them on an Arctic Liquid Freezer II 360 and they dropped the temps by over 20 degrees F compared to the stock Arctic fans.

There are at least three variations of this fan with the same model number. The ones made in Thailand have the best construction quality. Typical Delta industrial grade server fans with double ball bearings. No RGB (a huge plus for me) and they appear to last forever. I've never had one go bad. I was buying them directly from China and still have several on hand.

There maybe better CFM valued fans imho. Because I've heard a lot about Ebm-Papst and its undisputed superiority. Too bad, I have never seen them on the consumer market yet.

ebm-papst – energy-saving fans and motors from the world market leader – engineering a better life

As the worldwide leader in fan and motor innovation, ebm-papst has a range of around 20,000 different products, meaning it can provide the right solution for virtually any ventilation or drive technology task. And if our range doesn't have what you are looking for, over 650 engineers and...

www.ebmpapst.com

The interesting point is, there is no vortex generators on the industrial fans.

 

[claes]

That sounds all well and good in theory, but with all the restrictions in cases (videocards, tower coolers, liquid cooled piping), would that make any practical difference at all?

The fans are tested on a radiator, so it’s not equivalent to most case fascia, which are typically more restrictive and benefit even more from greater CFM and pressure, so yes.

The components in the case don’t really matter. Yes, the path of air is changed by components, but the air has to go somewhere. An intake fan won’t suddenly stop pulling less air just because there’s a GPU nearby. The internal components will push the air around in funny ways but it won’t prevent it from getting in and will only somewhat effect exhaust by hot spots created by obstructions.

Still, the exhaust fans are going to exhaust what they can — as Chrispy (I think) mentioned earlier the real issue is the case’s exhaust openings, not the components within.

When I removed the front magnetic filter, the temperature were decreased more than 8 degree celsius. But, should I remove that filter? Or, heat versus dust?

It’s a personal preference. Most of the best cases these days tend to use a single mesh front panel with no additional filter.

 

[mclaren85]

The fans are tested on a radiator, so it’s not equivalent to most case fascia, which are typically more restrictive and benefit even more from greater CFM and pressure, so yes.

The components in the case don’t really matter. Yes, the path of air is changed by components, but the air has to go somewhere. An intake fan won’t suddenly stop pulling less air just because there’s a GPU nearby. The internal components will push the air around in funny ways but it won’t prevent it from getting in and will only somewhat effect exhaust by hot spots created by obstructions.

Still, the exhaust fans are going to exhaust what they can — as Chrispy (I think) mentioned earlier the real issue is the case’s exhaust openings, not the components within.

It’s a personal preference. Most of the best cases these days tend to use a single mesh front panel with no additional filter.

In summers without filter, in winters with filter would best suits me.

 

[claes]

Idk how to reply to this — do you want new fans or a new case? What’s your budget?

I’d recommend gamersnexus for case reviews as they often test with the front panel removed

 

[sLowEnd]

When I removed the front magnetic filter, the temperature were decreased more than 8 degree celsius. But, should I remove that filter? Or, heat versus dust?

IMO just remove the filter and increase cleaning frequency if needed. That's a huge temperature difference.

 

[mclaren85]

Idk how to reply to this — do you want new fans or a new case? What’s your budget?

I’d recommend gamersnexus for case reviews as they often test with the front panel removed

I don't know what should I do tbh. But don't think the default fans are top notch.

 

[claes]

Honestly I’d replace both if that’s in your budget. There are some great cases out there these days with few airflow restrictions from the filtration/fascia that ship with solid fans. I’d recommend the fractal torrent if it’s available in your market, but check out GN to see what’s best for you!

 

[Chrispy_]

I don't know what should I do tbh. But don't think the default fans are top notch.

Your budget really does matter, so we need to know how much you want to spend on improving the airflow in order to help. Your problem is solved with enough money - get a high-airflow, unrestrictive case and put good fans in it - but that's $200.

• If you have no money at all, cut out the restrictive exhuast grille and move the top fan to the back.
• If you have a little money, either find a less restrictive case, or replace some fans.
• If you have a little more money, get a case that's decent AND comes with half-decent fans.
• If your budget is unlimited, get a decent case and throw some high-end fans into it as well.