Fan specs?

[Mullzy]

My case (Antec 1080AMG) claims the follow fan specs; 2000 RPM, 17.3 CFM, 25 dB(A). They are pretty darn loud. Not insane, but annoying enough.

I found these: Nexus Real Silent 80MM Case Fan which claim; 1500 RPM, 20 CFM, 17 dB(A).

Can I reasonably expect these fans to move more air and be quieter than my current ones? Or is the CFM rating at different RPMs misleading and they will actually move less air?

Thanks!

 

[Fullmetal Chocobo]

Some companies do so more than others. ThermalTake is amongst the worst for innaccurate measurements on their fans. Nexus makes good fans, and their specs are more realistic...

 

[GalvanizedYankee]

Simply stated 80mm fans suck. If they are quiet......they move no real cooling air.

There is room at the front intake for a thin 80 to 92 adapter. Use a low speed 92 for front
intake and on the side cover. Put a thick piece of carpet on the wall 6" from the rear of the rig.
This will help absorb some of the sound pressure. www.silentpcreview.com for more details.


...Galvanized

 

[Mullzy]

Thanks guys.

 

[Ping to the Pong]

Nexus fans are real good about the specifications. I've heard this fan before and its really quiet. If you could fit a bigger fan, i would agree with yankee had to say do what you can to get a 92mm to fit in there. However, if you wanna get the Nexus fan, get it Here as its cheaper.

 

[suszterpatt]

RPM ratings are accurate, they can be measured afterall. CFM ratings aren't that much off, but since there's no standard on measuring noise, it's the dB ratings you need to take with a grain of salt. I usually look at the RPM and CFM specs and decide whether the provided dB rating is accurate or not.


But yeah, as been said, Nexus is believable, TT not so much.

 

[Pens1566]

No, SilenX fans actually get 100CFM @ 14dB.

 

[Jhhnn]

Fan noise can be tricky to isolate. Start by unplugging all the case fans, then boot up to check the difference. You can also unplug the cpu fan, chipset fan, gpu fan as well, if it's only for short periods of time. Work on the loudest noise source first- it's your only hope for success.

That case practically cools itself- front fans are unnecessary entirely, unless it's really crammed with a lot (a lot!) of hot running components...

And, no, you can't expect new fans to move more air while being quieter, unless the fans you now have are, uhh, optimistically rated.... I doubt that your antec fans are rated quite as much that way as Tt fans- their ratings are a joke.

These are some of the quietest 80mm fans I've ever used, at 12v, anyway, and are also pretty wimpy-

http://www.sidewindercomputers.com/nmb80ulqubr3.html

Depending on what's in your case, they may be enough...

 

[GalvanizedYankee]

I maybe wrong but I would have a fan at the front intake for the sake
of the HDs.

...Galvanized

 

[JEDIYoda]

Originally posted by: Jhhnn
Fan noise can be tricky to isolate. Start by unplugging all the case fans, then boot up to check the difference. You can also unplug the cpu fan, chipset fan, gpu fan as well, if it's only for short periods of time. Work on the loudest noise source first- it's your only hope for success.

That case practically cools itself- front fans are unnecessary entirely, unless it's really crammed with a lot (a lot!) of hot running components...

And, no, you can't expect new fans to move more air while being quieter, unless the fans you now have are, uhh, optimistically rated.... I doubt that your antec fans are rated quite as much that way as Tt fans- their ratings are a joke.

These are some of the quietest 80mm fans I've ever used, at 12v, anyway, and are also pretty wimpy-

http://www.sidewindercomputers.com/nmb80ulqubr3.html

Depending on what's in your case, they may be enough...

Front fans are a must if you have your harddrives up front.
Also you will achieve better cooling if you have front fans with a rear exhaust fan.
Just having a rear exhaust fan does not promote good air flow or proper cooling!!

 

[kalrith]

Originally posted by: JEDIYoda

Originally posted by: Jhhnn
Fan noise can be tricky to isolate. Start by unplugging all the case fans, then boot up to check the difference. You can also unplug the cpu fan, chipset fan, gpu fan as well, if it's only for short periods of time. Work on the loudest noise source first- it's your only hope for success.

That case practically cools itself- front fans are unnecessary entirely, unless it's really crammed with a lot (a lot!) of hot running components...

And, no, you can't expect new fans to move more air while being quieter, unless the fans you now have are, uhh, optimistically rated.... I doubt that your antec fans are rated quite as much that way as Tt fans- their ratings are a joke.

These are some of the quietest 80mm fans I've ever used, at 12v, anyway, and are also pretty wimpy-

http://www.sidewindercomputers.com/nmb80ulqubr3.html

Depending on what's in your case, they may be enough...

Front fans are a must if you have your harddrives up front.
Also you will achieve better cooling if you have front fans with a rear exhaust fan.
Just having a rear exhaust fan does not promote good air flow or proper cooling!!

Having intake fans with a filter will also help to reduce dust in your case. With no intake fans, the exhaust fans are going to draw air from anywhere it can get it, which will include places with no filter. I don't have my hard drives in front of my front fans, but I still have them on to both reduce dust and promote proper air flow.

 

[suszterpatt]

However, dust filters clog up fairly fast, and they're usually not in a place where they could be conveniently cleaned. That's why I took off my intake dust filter, and while my inside is definitely more dusty, at least I know it has proper airflow. Creating positive case pressure by having your total intake CFM be higher than your total exhaust CFM is more convenient, though only arguably better.

 

[kalrith]

Originally posted by: suszterpatt
However, dust filters clog up fairly fast, and they're usually not in a place where they could be conveniently cleaned. That's why I took off my intake dust filter, and while my inside is definitely more dusty, at least I know it has proper airflow. Creating positive case pressure by having your total intake CFM be higher than your total exhaust CFM is more convenient, though only arguably better.

My case has two 80mm fans in the front, one in the top, and two in the rear. I currently have the top one blowing out. Would I possibly get better results by removing the front fan filter and making the top fan blow in instead of out, in order to creat positive case pressure?

 

[suszterpatt]

Depends on their airflow. Does your PSU have a fan that sucks air out of the case?

 

[kalrith]

Yes. It has a 92mm fan on the bottom of the psu. I'm surprised that I hadn't considered that.

 

[suszterpatt]

Well, you could try. Though I wouldnt be surprised if your case temps actually went up a bit, with the top fan forcing rising hot air back down towards the CPU area. Taking the top fan out and cranking up your intake fans (or slowing down your exhaust fans) would be a better solution imo.