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New fans for radiator

post #1 of 10
Thread Starter 
Hey guys, new here. Posted in both cooling experiments & air cooling and was referred to this section.

So I need better fans for my radiator. Here's what I have right now: http://www.newegg.com/Product/Produc...82E16835200062. I got them because they were cheap, but I can barely feel any air coming through the other side of the radiator. I read this thread and I've completely changed my list of potential replacements. Old list had a CoolerMaster R4 as the best in the list, but from what I saw in other threads, these aren't quite what I'm looking for. New list consists of these fans:

http://www.overclock.net/5895163-post41.html
http://www.overclock.net/5895769-post42.html
http://www.overclock.net/5890381-post30.html
And I would like opinions and/or stats on these fans if you can help(newegg reviews can only go so far):
http://www.newegg.com/Product/Produc...82E16835118069 (looks like a transparent ZM-F3)
http://www.newegg.com/Product/Produc...82E16835118067 (looks really cool)

As for the 3 fans at the top of the list, where could I get them? Newegg only has the lower flowing Gentle Typhoon AP-14, not the higher flowing AP-15, and neither of the other 2 (unless the Zalman F3 FDP is the same as the one Martin reviewed).

What I need is something that flows well through a radiator and isn't too loud. The radiator is a MagiCool Xtreme Quad 480 (about 1.75" thick) and sits on the floor next to my desk and is about 3 feet away from my ears. It needs 4 fans and they're all completely exposed, so noise is a high priority for me. A light wind noise I can deal with, but can't stand motors whirring about.

Also, would it be a good idea to keep the Rosewill fans I have on there now, but set them up as pullers to supplement the new fans which will likely be set up as pushers?
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Mr. Bubbles
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post #2 of 10
The first 3 fans are great. I mean great! The scythe GT's are obviously a favourite for most, and its clear why; they are awesome. The Noiseblockers impressed me with those graphs so they seem great for what they do, and, they must be silent! The white fan that you said looks really cool - i think its overpriced and mostly for looks... But thats my opinion.

Scythe GT;s:
http://www.aquatuning.us/product_inf...20x25mm--.html
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post #3 of 10
Agreed. Scythe is the way to go if you can get them. I would pitch the rosewill fans. they would only get in the way of anything else. The push pull config is generally a minmaxing technique and, unless you are doing some serious overclocking, the noise would be more than double just the gentle typhoons. Lots of extra noise, very little gain.
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post #4 of 10
If static pressure is a concern to you try some 38mm thick fans too. I recommend getting a fan controller for them though.
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post #5 of 10
Thread Starter 

Just for the record, the Rosewill fans are only 1200rpm and essentially silent. The air pump for the bubble bar is louder than all 4 of them combined and that is like the light hum of a refrigerator from across the kitchen. The Rosewills do not add any measurable amount of noise.

Also, I don't know what static pressure is a measurement of and how it affects performance.

Any more opinions on the white Zalman shark fin fan?

As for the fan controller, these will be running directly from the power supply and I have little room for a fan controller. Also, due to the poor air circulation through the upper level of the house, these will likely need to run at 100% most of the time. Since I can't do much about the temperature gradient between the air and the oil, the only way to increase the heat transfer would be to increase the velocity of the airflow. (took a course in heat transfer this past term)

EDIT: I found a video (coincidentally by Martin) for the Zalman SF3 shark fin fan, which made comparison quite simple and convenient. Also compared the Arctic Cooling F12 fan. The downside is the 4-pin PWM plug, which will require me either getting an external PWM controller or 4-3 pin adapters, neither of which I am having much luck finding. Both fans are only marginally louder than the Gentle Typhoon and have roughly equivalent airflow. Here's the video links to compare them:


Comparing the noise & flow at 12V, they're all roughly the same, but I think the Arctic Cooling F12 is out of the running because of the 4-pin PWM plugs, and thin wires. I can't find the Gentle Typhoon AP-15 anywhere. The only place that doesn't say either "Out of Stock" or "Discontinued" is the link posted by MacNCheese, and they just told me they have 500+ in stock. I'm now torn between the SF3 and the AP-15. The SF3 looks to have more surface area on the fins and a smaller center hub. And the looks alone I think are worth the $2 over the AP-15.
Edited by tippy25 - 6/1/11 at 11:39am
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post #6 of 10
A 38mm high speed fan on a controller will blow all 25mm fans out of the water when it comes to static pressure. I went from ap-15 to deltas and couldn't be happier.
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post #7 of 10
Thread Starter 
I checked out a couple 38mm fans and the noise was just unacceptably high for my application. Here are some pics of the system:


The wire mess has since been cleaned up. My desk is immediately to the left, with the headset hanging off to the side.


The fans on the far left are the ones that are getting replaced. Completely exposed with no sound deadening or shielding and literally 3 ft from my ears, noise is very near the top of my list.
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post #8 of 10
Quote:
Originally Posted by huhh View Post
A 38mm high speed fan on a controller will blow all 25mm fans out of the water when it comes to static pressure. I went from ap-15 to deltas and couldn't be happier.
I'm switching soon from 2200rpm YL 25mm fans to 2100rpm Panaflos. I hope that I have the same experience as you

Quote:
Originally Posted by tippy25 View Post
I checked out a couple 38mm fans and the noise was just unacceptably high for my application. Here are some pics of the system:
The wire mess has since been cleaned up. My desk is immediately to the left, with the headset hanging off to the side.


The fans on the far left are the ones that are getting replaced. Completely exposed with no sound deadening or shielding and literally 3 ft from my ears, noise is very near the top of my list.
Awesome submerged system! 38mm fans shouldn't be louder as a generalization. They should be the same volume at the same RPM as the same bearing as a 25mm fan. If they're louder, it's because they're moving more air, a good thing. If that's the case, you can just tone them down more than you would otherwise have run a 25mm fan at. The only wrench to throw into my statement is that some 38mm fans click when undervolted. MartinM experienced that when he undervolted the high-speed Panaflo fans. With the medium speed 2100 rpm fans that I've got, they do not click at low speed, they just turn off below 7v, but at 7v, they're silent, and at ~12v, they're quieter than my yate-loons at the same speed, but move more air.

To each their own though. FWIW I run my fans about 1.5' from my ear, so I too am very sensitive to the noise that fans make. My 200mm low RPM CoolerMaster case fans in my HAF-X are actually louder right now while the YL fans are at 20% PWM (~5v).
post #9 of 10
Thread Starter 
Every 38mm fan I looked at from Martin's videos had a considerable amount of high-pitched whining coming from the motor. That is an absolute deal breaker. It's like a hot chick with a really annoying laugh.

I compared the pricing of the SF3 and AP-15. From Newegg, I can get the SF3 to my door for $81 ($90 from Aquatuning), and from Aquatuning, I can get the AP-15 for $80 (not available from Newegg). This is including all taxes and shipping fees.
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Mr. Bubbles
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post #10 of 10
Thread Starter 
Ok, still haven't made the purchase since I'm still essentially broke. I'm looking for input on the Aerocool shark fan, preferably the 120mm fan. I'd like to compare how it stacks up against the Zalman shark fin fan. I would think 15 blades should give it pretty good pressure for radiator flow, but I've seen some people say these would be weak for radiator applications. I saw Martinm20 test the 140mm shark fan, and it seemed to do very well, better than the Zalman, but I don't know if that's because of the added diameter and if the radiator allowed more flow.

EDIT: Also, would it be better to push or pull through the radiator?
Edited by tippy25 - 6/24/11 at 12:10am
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Mr. Bubbles
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