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[Official] Corsair Hydro Series Club - Page 1422

post #14211 of 28303
Quote:
Originally Posted by dockiks View Post
Hmmm...I wonder why mine are spinning slower. These are my fans/pump, their rated RPM and the average actual RPM I get:

Scythe Gentle Typhoon AP-15 (1850) 1762
Scythe Slip Stream 140 (1200) 1235
Coolermaster Megaflow 200 (700) 742
H70 pump (1400) 1395

The H70 pump is almost at spec, the 2 other fans are faster than their rated RPM. Only the GT-15's are much lower than spec. Granted that they are pushing/pulling against a radiator (load), but s are Carfanatic's. How about the other GT-15 users out there? What RPM's are you getting?

Note: Only the Megaflow 200 is hooked to a sensing (but not controlling) MB header; the rest are hooked up to the PSU
Your AP-15s are only 5% below their rated speed. Fans are sold/advertised at +/- 10% their rated speed. You are well within those limits.
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post #14212 of 28303
Quote:
Originally Posted by Magus2727 View Post
has any one used these on the H50/H70 to see how well the perform when there is back pressure?
Not well.


http://www.overclock.net/11040075-post63.html
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post #14213 of 28303
Quote:
Originally Posted by looser101 View Post
That was a noise comparison not performance. Don't think he was asking how loud they are.
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post #14214 of 28303
Quote:
Originally Posted by Carfanatic View Post
That was a noise comparison not performance. Don't think he was asking how loud they are.
You are mostly correct. But it shows that the AP121 doesn't move much more than 20cfm through a rad. It also shows that 3 fans can move over 40cfm through a rad. I chose that particular vid because it compares various fans that have been discussed in this thread. In the vid the meter on the left is the cfm and the one on the right is the voltage required to achieve each cfm "step" for each individual fan.

I also linked to the post which describes the video. From there you can find much more info on those fans, in that thread. Here is the test run on the AP121 without a frame of reference.


Edited by looser101 - 10/19/10 at 5:53pm
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post #14215 of 28303
well the noise does seam higher given the lower speed and CFM... I have some Enermax Magna that are 65 CFM 1.3 mm Merc. back pressure that are 18 dB and these are only 1.7 mm Merc Back pressure and are only 35 CFM and 22 dB....

Seams like there are mostly good for directing air, not so much moving air with back pressure. These would be good to have like stated as a general intake or if you have a side fan location directly over a GPU or something...
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post #14216 of 28303
Quote:
Originally Posted by Magus2727 View Post
well the noise does seam higher given the lower speed and CFM... I have some Enermax Magna that are 65 CFM 1.3 mm Merc. back pressure that are 18 dB and these are only 1.7 mm Merc Back pressure and are only 35 CFM and 22 dB....

Seams like there are mostly good for directing air, not so much moving air with back pressure. These would be good to have like stated as a general intake or if you have a side fan location directly over a GPU or something...
I would think it would make a great case fan on intake, if you have a need to localize the airstream. ie. force cool air to your graphics card.

Regarding the video... he's measuring at a distance of 1 foot. Manufacturers spec noise at 1 meter and alot of them cheat and spec at the fans lowest voltage/cfm.
Edited by looser101 - 10/19/10 at 5:56pm
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post #14217 of 28303
Quote:
Originally Posted by looser101 View Post
You are mostly correct. But it shows that the AP121 doesn't move much more than 20cfm through a rad. It also shows that 3 fans can move over 40cfm through a rad. I chose that particular vid because it compares various fans that have been discussed in this thread, for comparison purposes. In the vid the meter on the left is the cfm and the one on the right is the voltage required to achieve each cfm "step" for each individual fan.

I also linked to the post which describes the video. From there you can find much more info on those fans, in that thread. Here is the test run on the AP121 without a frame of reference.

http://www.youtube.com/watch?v=l-iHY4q05z8
So those rear fins must be what really does the majority of the noise reduction it seems but, even with them removed they really can't push much more air and not worth the noise at that point. I have some Akasa Apache fans that are 1300rpm and pushed more CFM through the H50 radiator than that fan and they are dead silent but, they still didn't push enough air to keep my temps down where I wanted them.
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post #14218 of 28303
I think the fins on the back are to direct the air into that tunnel effect. Removing them probably increases cfm due to less restriction. Noise reduction probably comes from its low speed and blade design.
Edited by looser101 - 10/19/10 at 6:44pm
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post #14219 of 28303
Quote:
Originally Posted by sendblink23 View Post
I'm looking at your case... is this it?


Where exactly do you have your 2 TB setup at(I'd imagine in the lower bay HD area)?
I think he meant to mount the H50 at the FRONT TOP 5.25 bay area, that is if you don't have it filled up... as for me I only have 1 optical drive up there.. so if yours is like that then mount the H50 right there with zip-ties - you won't need to cut anything - just buy 2 good fans(the ultrakaze u meantioned earlier) & make 2 shrouds(any 120mm cheap fan take/pull/rip out the center fans from them) and thats it... set it as *Intake fan<shroud<rad<shroud<fan on the front bay top area
I have two drives up top and my HDDs are on the bottom. I only have two drive bays open on top. It didn't look like enough space when I checked.

Would I really see an increase in temp reduction? I have a quad core, would I need the H70 and an Ultra Kaze?
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post #14220 of 28303
Off topic from the current topic but on topic for this thread... How often do you clean your Rad? do you do it on a as needed basis (by checking once a week or something?) or do you always clean it saw 2x a week as part of some special ritual? I need to clean mine out and install my shrouds... but need to get some air in a can.... (or perhaps barrow my father inlaw's little air compressor... I think its such a rip to pay 10 bucks for compressed air...
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