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post #21 of 28
Quote:
Originally Posted by whiteslashasian View Post
From what I had seen in reviews, the Rheosmart 6 is more of a Binary on/off action when a certain temps on the CPU are reached rather than true PWM control. I could definitely be wrong however as I haven't used one...

*edit* I guess that's just one way of setting it up. It seems that it does indeed adjust the 3-pin fan speed based on PWM signal from the mobo according to the official site:
The PWM controller is only as complex as you make it. I use Asus AI Suite II's Fan Xpert program to set a custom fan profile, and I have no problems making a 4 tier fan curve program to dictate how fast the fans go on my setup. I know at it's lowest setting, Panaflo fans won't even start up, so when I do switch to Panaflos, I may have to adjust the curve again, but for now it runs 20% on the Yate Loon fans no problem.

In the youtube video, it might be on and off only because of how his bios controls the PWM. The new UEFI boards often have complex fan management systems, as even the UEFI by itself can control fan RPM based on a curve, without having any software in windows.

I've always hated fan controllers because of the manual nature of them, that I don't want to think "gee, I think I'm going to play games now, so it's time to crank up the volume." That always annoyed me, so I've always hated fan controllers. Now with PWM ones, it's all automated, and as long as my fans are reasonable volume at full blast, I've got no issue with them reaching it when I'm busy focusing on gaming.
post #22 of 28
You can do automatic control without using PWM. Some of the better (more expensive) fan controllers have options to speed up fans based on temperature sensors.
I have a Lamptron FC Touch, it does automatic control, and it works ok but isnt the greatest imo. Run at 50% (or whatever speed you wish) till the temperature reaches the setpoint and then run at 100%. It would be great if it could do a curve.
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post #23 of 28
Thread Starter 
Completely missed that video the first time you posted it whiteslashasian, thanks for that post. While that video does show what it sounds like on the mcr120, which does not sound bad, it does not really tell me how it differs from the xpsc. However, listening to that, I do not feel like it would be that bad either way, so I am definitely more confident in my choice now of going with the thinner and cheaper mcr320. Thanks guys!
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post #24 of 28
Latest Speedfan beta versions can also handle temperature curves, this is how I'm running 7 * GT AP-15's on rads, while idling rad fans only run at about 800 rpm. I have MCP35X connected to Cpu fan header and 7 AP-15's connected to Chassis fan 2 & 3 headers.

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post #25 of 28
Quote:
Originally Posted by Dr.GumbyM.D. View Post
The PWM controller is only as complex as you make it. I use Asus AI Suite II's Fan Xpert program to set a custom fan profile, and I have no problems making a 4 tier fan curve program to dictate how fast the fans go on my setup. I know at it's lowest setting, Panaflo fans won't even start up, so when I do switch to Panaflos, I may have to adjust the curve again, but for now it runs 20% on the Yate Loon fans no problem.

In the youtube video, it might be on and off only because of how his bios controls the PWM. The new UEFI boards often have complex fan management systems, as even the UEFI by itself can control fan RPM based on a curve, without having any software in windows.

I've always hated fan controllers because of the manual nature of them, that I don't want to think "gee, I think I'm going to play games now, so it's time to crank up the volume." That always annoyed me, so I've always hated fan controllers. Now with PWM ones, it's all automated, and as long as my fans are reasonable volume at full blast, I've got no issue with them reaching it when I'm busy focusing on gaming.
I figured this would be the case. It all depends on how the mobo BIOS controls the PWM function and/or software control. Some people complained that it was only a binary on/off but that must have been their own mobo limitation and/or lack of fine tuning using a 3rd party application.

Good to know, thanks.

Quote:
Originally Posted by Huckleberry View Post
Completely missed that video the first time you posted it whiteslashasian, thanks for that post. While that video does show what it sounds like on the mcr120, which does not sound bad, it does not really tell me how it differs from the xpsc. However, listening to that, I do not feel like it would be that bad either way, so I am definitely more confident in my choice now of going with the thinner and cheaper mcr320. Thanks guys!
Martin does his noise comparisons between fans, requiring the rad to be constant. I don't think he's done a noise comparison of Rads...perhaps a request should be made!


*edit* Thanks for the post mm67. I will definitely play around with the beta Speedfan. The CoolerMaster TX3 w PWM fan I have on my parents PC spins up quickly and gets loud at the slightest provocation (no matter what I set in the BIOS). Will try to calm it down a bit because that X2 555 chip never really gets that hot anyways.
Edited by whiteslashasian - 5/4/11 at 1:23pm
    
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post #26 of 28
Thread Starter 
Yeah, it definitely makes sense for the rad to be kept constant for the test at hand. I do like the idea of using an automated control. Will have to look into that a bit more. Are multiple fans on a single header not a problem?
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post #27 of 28
Quote:
Originally Posted by Huckleberry View Post
Yeah, it definitely makes sense for the rad to be kept constant for the test at hand. I do like the idea of using an automated control. Will have to look into that a bit more. Are multiple fans on a single header not a problem?
Depends on board, my Asus X58 boards can handle 2 A / header while my older Gigabyte P45 can only do 1 A /header. On a 2 A header I can safely run 5 GT AP-15's (startup current is 360 mA / fan * 5 = 1.8 A). Same header could also power 9 GT AP-14's since they only need 210 mA at startup.
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post #28 of 28
Quote:
Originally Posted by Dr.GumbyM.D. View Post
I looked around a good bit for "automated" fan controllers, but other than that one incredibly complex setup, what setups are automated? The only simple automated was the Sunbeamtech Rheosmart 6 which used the PWM signal from the motherboard. Other controllers had fancy LCD screens and temperature sensors that you can put places, but how helpful are external temp sensors?
As soon as the latest version of Aquasuite comes out, the Aquaero 5 (and maybe the 4) can see built in tempurature sensors.

Another alternative would be some variety of splitter off of a motherboard header. Akasa makes a PWM splitter.
    
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