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Static pressure rating for Gentle Typhoon AP-15

post #1 of 31
Thread Starter 
What exactly is the static pressure rating for Gentle Typhoon AP-15 fans? I keep reading it's so high, but I can't find the exact number anywhere, not even on Scythe's own site. Out of the fans I've looked at, Noctua & Sanyo Denki lists the figure for their fans, NoiseBlocker like Scythe, doesn't.
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post #2 of 31
AP-15: http://catalog.nidec-servo.com/digital/english/general/pdf/D1225C.pdf

High-Speed GT's: http://catalog.nidec-servo.com/digital/english/general/pdf/D1225C_hi.pdf
post #3 of 31
I took this from here

The article (book) eHume wrote on all these fans is incredible.

GT 1850



Gentle Typhoon 1850 Specs

Size: 120x25mm, 9 blades
Bearing: Double ball bearings
Speed: 1850 RPM
Airflow: 57.7 CFM from the website, 58.3 CFM from the box (Nidec says 58 CFM for theirs)
SPL: 28 dBA box and website (Nidec says 30 dBA for theirs)
Static Pressure: 2.9 mmH2O (from Nidec)
Feature: 3-pin to 4pin adapter included; the adapter includes an RPM reporting lead.
Edited by NitroNarcosis - 3/29/12 at 9:44am
post #4 of 31
Thread Starter 

Many thanks for those links.

So from that PDF, see the AP-15 static pressure figure (2.05 mm H2O) is less than Noctua's NF-F12 fan (2.61 mm H2O), although the AP-15 CFM figure is slightly higher at 57 vs 55 for the Noctua. Interesting. Maybe the NF-F12 is still a viable option for my 240 rad then.
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post #5 of 31
The Noctuas are certainly viable radiator fans, I don't have the link offhand but there was a fan comparison that showed them performing essentially the same as Gentle Typhoons at the same rpms, with the GTs being slightly quieter at the same amount of air moved. AP-15s are faster than the NF-F12, which means they will outperform them, AP-14s are more directly comparable as they're a similar speed.
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post #6 of 31
Thread Starter 
Correct. From the Noctua data, their static pressure is slightly higher, with CFM & RPM slightly lower. What I like about the Noctua's is they are PWM. I'm considering getting a PWM splitter cable for the two fans and plugging that into the motherboard header. I also considered push & pull, but unless I create/solder one myself, I don't think there's a PWM splitter cable for four fans.
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post #7 of 31
Comparing fans using static pressure is like comparing pumps using max head pressure. It is only a point on the performance curve at a location far from operating range and not a very good indicator. Unfortunately I don't find any of the standard box specs veey useful. RPM is probably every bit as good as static pressure or max flow rate.

There is probably no more than 3-400rpm difference separating most fans.

The bigger differentiator is noise level ON a radiator...but no specs for that.
    
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post #9 of 31
post #10 of 31
used this on a recent build. cheaper than both tongue.gif
 
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