Ok the judgment day are today ..
So one small intro ... DC motors are well known to me, servicing electronics makes my living.
By building electronic circuits on demand , i have open many holes for fans so far , with my hole saw tool.
GELID is a very new brand, and the illustration and promotion of there products , looks under my microscope, very honest .
They said ... accurate fins design ... well it is ... exactly the same as the AKASA ones.
They said ... Low noise ... it is .
They said ... 58 CMF ... Nop its not .
They said ... Better bearings .... Hmmm time will tell .
The DC motor on the scope .
The GELID motor was a pleasant surprise to me .
Usually , DC motors will do :
1) buzzing sound or
2) ticking sound or
3) deep hum or
4) screaming hum
The GELID 12TC , its a ticking one, but extremely well made = the ticking is audible only if you touch the body of the fan at your eardrum.
The RPM scale does not effect the noise level of the motor it self ....
The "Side by side" comparison show that the AKASA , is more powerful than GELID at full speed .
I had to deep the GELID sensor in a glass of hot water , so to keep it at max speed, for the test.
The sensor on the scope
About 28cm long cable and sensor , it does respond to temperature changes ,
but its not as fast i would expect to be .
Its sensitive to human temperature , but the 40C its hard to be found in any modern computer case , so the max RPM will never be there.
The power cable on the scope
About 45cm long , long enough .. and sleeved with black color ,
good camouflage , for cases with large plexi windows
Performance on the scope
If i like to see the performance , i would look the reasons that i got it.
1) I did not liked my fans to over spin with out reason
2) Never had a need, for extreme ventilation , even the AKASA fans was on "home made" voltage regulator with 7 & 12V as options.
And i always operate them at 7 Volts . ( when operated at 12V , i got 1C drop in all system sensors , and the sound was extreme)
3) The automated speed control , its a convenient solutions as "Set it and forget it" .
The Good
1) GELID lied about the dB noise , are lower
2) AKASA sounded as airplane on takeoff on full speed (deep hum ).
3) GELID motor stayed less audible, the moving air was audible at full speed, but not the motor.
The bad
The AKASA one , looks more powerful than GELID .
Both at full speed , looked that GELID can not compete as CMF winner .
I did tried to make AKASA to perform equally with the GELID , and i had to step down to 10,50 volts .
Accurate fins design , does not help , when the opponent has " Accurate fins design " too
Conclusion
Well made fan blades, truly low noise , modern DC motor , sensitive sensor ,
acceptable quality , compared with TT smart fan , that is the only one that i know with similar design .
The TT smart fan , has more sensitive sensor , but its made to be attached on surfaces (thin one ) and gets damaged easily .
The GELID sensor , its more hard to kill.
So , if GELID successfully compares , with AKASA and TT , there is no worries .
Now i have to install them ... and that needs lots of work , on a loaded case.
Few pictures for you ...