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Round 6 Fan Testing (Working Thread) - Page 30

post #291 of 476
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Quote:
Originally Posted by charliehorse55 View Post
Yeah it's looking like I might just get Yate loons again. Even if they cause problems after a year, replacing them would still cost less than gentle typhoons.

I'm hoping I just got a bad batch with my first set.

EDIT: Yate Loons have removable blades right? I'm going to paint my new fans to a white/black theme.
If you're getting yates, definitely try some from Petra's, that's where I got the ones currently running 2 years plus strong. Yes, you can, but you have to peel the back sticker and remove a plastic retaining clip and o-ring. Not to hard, just messes up the sticker is all.

Quote:
Originally Posted by SimpleTech View Post
For those who know about the Delta AFC1212DE with PWM, is this the correct one?
Looks similar but different than the one at FCPU
http://www.frozencpu.com/products/85...6c15s562#blank
Maybe there are some different revisions? I'm not sure, Bing and OldChap seem to know the most about them. I'm pretty clueless about anything other than the few I've tested so far.
    
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post #292 of 476
Thread Starter 
FYI,
Put in my SWC order tonight, these should be on their way shortly. Hoping the Delta will follow suit as the VHE did and extend down RPM range to match up as a better mid/high speed option.

The Akasa and Slipstream for some additional PWM options, also just wanted to try one of the Akasa options.



Special thanks to Ratdog for the fan fund so I could order these...
Edited by Martinm210 - 11/28/10 at 7:42pm
    
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post #293 of 476
Quote:
Originally Posted by Martinm210 View Post

Special thanks to Ratdog for the fan fund so I could order these...


Glad I could help. Had some marketing dollars. Thank


Edited by RatDog - 11/29/10 at 7:23pm
post #294 of 476
Thread Starter 
for Science!...

FYI, tried building another DIY little fan controller.

3pin PWM switching mode power supply controller per PCBheaven

Tried it out on the Delta, the controller works pretty well. Goes clear down to 0% duty cycle and up to as high as my multimeter could read around 99%. So...the operation seems pretty good although the power mosfet does get a little warm.

In comparison to voltage control though, it performed pretty much the same. Same CFM/dbA across the board. The only real difference was that I think I could start it with the PWM just a hair lower RPM, and of coarse I completely loose RPM readout.

I was hoping this would eliminate some motor tick, but it appears this particular PWM circuit gives pretty much the same result.

It was fun building anyhow..


Edited by Martinm210 - 11/29/10 at 8:59pm
    
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post #295 of 476
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FYI,
I've finished building the 140mm fan testing template. Pretty much identical to the MCR120 template except using the Hardware Labs 140mm SR1. This will bolt up to the same flow testing chamber, so the only change will be the radiator.

Ready for some 140 runs this weekend...
    
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post #296 of 476
Lookin' Nice!

Glad to see some 140mm fan results, it's been hard to find any good data on them.
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post #297 of 476
What charliehorse55 said. This will be great!

Curious though, what led you to use a SR-1 instead of Xtreme? To the best of my knowledge the SR-1s are intended for use with lower RPM fans, while the Xtreme is a higher density rad that's more typical of other rads out there. If that's what people sent you, well, that's what they sent you and I'm thankful that they did.

Keep in mind I'm completely new to water cooling, so I may be talking nonsense.
    
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post #298 of 476
Yeah...changing the rad is actually a very big difference. Although it really just means that you won't be able to compare the 140mm fan results to the 120mm ones.
post #299 of 476
Thread Starter 
Thanks!

I picked the SR1 for a few reasons. The fan fund was sponsored, but I picked the radiator and ordered it myself:

-I wanted a low restriction 140mm radiator. My flow chamber already adds some "Testing" restriction to the results from the flow spreaders and velocity port, so I didn't want to add any more restriction than necessary. I also picked it because I'm personally more interested in low restriction radiators than high restriction. I have a GTX480 rad myself and would much prefer the SR1 in my own setup, because I don't like noise and favor the low density rads and low speed fans (I run 1000RPM). I just accept that performance is low and mitigate by going huge on the radiator sizes (I run dual 480 rads, one for my CPU and one for my GPU/Chipset loop).

-I also wanted an "Oversized" 140mm radiator. The EK is more narrow, so there may be some fan airflow obstruction, this would provide the least impact to air flow.

-Screws are M4 - The EK uses M3 screws and I've had trouble cross threading those in the past. With as many fans as I'm mounting and removing and mounting, I wanted the extra durability of M4 screw threading.

As far as dense vs low density rads. I think the relative performance differences will be close no matter which you test with. While there will obviously be more air flow on the low density rad and perhaps less noise, we're still sitting near the middle of the fans PQ curves. Unless we're splitting hairs, I highly doubt there would be any drastic change in relative performance differences on the fan tests, the results would simply be tighter with the reduced flow rates.
Edited by Martinm210 - 12/3/10 at 4:05pm
    
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post #300 of 476
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And a 140mm yate high speed mounted...everything else is the same except the radiator/template.
    
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