I like how you organized your review. It makes a lot of sense to group by RPM rather than just voltage. But is there any chance of getting an mp3 of what "twirling" sounds like? I'm having a hard time imagining it.

But is there any chance of getting an mp3 of what "twirling" sounds like? I'm having a hard time imagining it.

No doubt your Papst is damaged. I have three 4412 and none of them wobble. It should be running very smooth.

.....and normally run my 4412's at 4V, about 400 rpm.

Good to know, but do you hear ticking?

I was wondering where you ordered your Papsts from

Also... the specs on the Papst seem to have it pushing 55 cfm at 26dba, do you believe this to be true?

If you want a quieter 120mm, the NMB B10 would come in better - the
blade design is a little better, and the bearing noise will be narrowband.

However, price or availability may present a barrier to that choice.

Papst also have a little bit more vibration (they come from an industrial background and are hugely expensive for integrators, so must pay for it in some respect to get economic buyer approval) so can benefit from the little squishy mounts or grommets you can buy.

If you want a quieter 120mm, the NMB B10 would come in better - the blade design is a little better, and the bearing noise will be narrowband.

Think big - 120 mm fan Special

Preface:
The advantage of 120 mm exhausts is obvious. By their larger wing geometry they promote more air than smaller models at same number of revolutions clearly. For particularly noise emission-conscious users it is naturally decisive that they offer a substantially more pleasant operating noise during same mechanical handling capacity. For each application they are however also not suitable. For the cooling of conventional radiator boxes for example a relatively point-exact air flow is needed. In this case the employment of a 80 mm of exhaust presents itself as substantially more efficient. Where 120 mm of exhausts can out-play their advantages completely, the ranges are housing ventilation and radiator cooling. Also to the cooling of power packs and as convection support of wide passive radiator boxes they are recommended. Excursion-give for the respective operating noise of the exhausts are the strength of the drive, the position of the wings and their geometry, as well as the kind the wave storage. For Ultra Low Noise advocate is naturally important that the exhaust with a particularly low number of revolutions can be operated and no disturbing background noises produced. My colleagues of SilentHardware.de placed a particularly interesting and comprehensive report recently on the legs. Altogether equivalent 57 Multimediafiles of different exhausts - among other things also nine 120 mm of exhaust - can be heard sample and compared with one another. In our Special it concerns however primarily around that instrumentation as well as subjectively determined operating noise and in particular the cooling performance of the respective models. As small Schmankerl the advantages of the exhaust uncoupling are to be pointed out for the first time instrumentation.

Comparison candidate:
Together with the Shopbetreiber Modding organization was selected a quite multicolored pallet by exhausts. One probably at the most frequent recommended 120 mm the exhaust is a Pope 4412 F/2GL. It must maintain ground in the comparison test among other things against two interesting models from the house Blacknoise. Likewise is used with the Y.S. Tech Green label of one of the at present quietest 120 mm of exhausts. Further models from the house Enermax and titanium, as well as from our forum admitted Yate Loon, round the pallet downward off. All indicated values were determined and to originate not from the specifications of the manufacturers. The quotations refer to the Shopbetreiber Modding Discount conditions 21.12.03. By any series dispersions the values and subjective impressions can deviate of it.

Pope 4412 F/2GL - the place deer offers the best processing and the smallest vibrations. Completely of background noises it is however not free in the lower speed range. During lowest starting tension of 3.36 V minimum rattling is heard. The 1,600 U/min has fast exhausts a relatively sumptuous Motorkorpus of 47.0 mm. Its blades are angephast and favourably rounded off. The 175 gram ceramic(s) sliding bearing for a particularly calm run has heavy bolide Sintec. The number of revolutions can be picked out by means of Tachosignalkabel. The purchase price is relatively highly however justified with EUR 16,99.

Noiseblocker SX2 pro Blacksilence - with its 1,550 U/min stands the 160 gram heavy exhausts in direct competition to the Pope 4412 F/2GL and can be compared from the operating noise also with it. It is relatively well finished and in the enterprise almost free by background noises. However it offers the strongest vibrations of all participants and should therefore be decoupled. The starting tension is with 4.64 V and the Motorkorpus measures a diameter of 44.0 mm. The number of revolutions can be picked out by means of Tachosignalkabel. With a purchase price of EUR 17,99 it is the most expensive exhaust of the entire test field.



Noiseblocker SX2 Blue Rev. 2 - The optically most responding exhaust of the test field. Well processes and with 40.0 mm of smallest Motorkorpus. Besides it brings the lowest weight with 105 gram into the scale pan. The starting tension of the exhaust doubly running in ball bearings is with 3.88 V. Unfortunately its operating noise is accompanied by easy vibrations and background noises in form of quiet rattles. By decoupling, one can work however to a large extent against. With a number of revolutions of 1.850 U/min it ranks among the somewhat higher performance models. The purchase price of EUR 13.99 appears appropriate.

Y.S. Tech FD1212251B-2F - With a number of revolutions of 1.100 U/min it is the quietest exhaust in the test field. At the same time the 160 gram heavy exhausts with 47.5 mm have the largest Motorkorpus. Its approach tension amounts to 4.62 V. The Tachosignal can be selected only by the few Main boards. The processing is altogether regarded by good quality. In the enterprise work ELT also as Green label well-known silent exhausts almost vibration-free, but not completely without background noises. Particularly at reduced number of revolutions it offers a quiet Klackern. With a purchase price of EUR 13,99 it is one of the most favorable exhausts of the test field.



Yate Loon D12BM-12 - which Yate Loon model of which predominantly in Fortron SOURCE power packs use finds, becomes in our forum already for a long time as if secrettap acted. Particularly the low approach tension of 2.66 V make interesting this exhaust for silent Freaks. Besides he works almost vibration-free and hardly offers background noises. The Motorkorpus 130 gram light exhaust is only 40.0 mm small. The processing satisfying and a Tachosignalkabel does not however only give it. Its number of revolutions is with roughly 2,350 U/min. At present only with ichbinleise.de as MR fan 12/2350 for EUR 11,90 available.

Titanium TFD-12025M12C - With a combat weight of 325 gram it is the heaviest exhaust in the test field. It is well finished and work ELT by its aluminum framework almost vibration-free. The starting tension is with 4.42 V. With 2.350 U/min its operating noise is clearly more highly than with comparable models. The Motorkorpus is relatively small with 42.0 mm. The number of revolutions can be picked out by means of Tachosignalkabel. The exhaust is suitable rather for Casemodder as for silent Freaks. At according to reduced number of revolutions, he proceeds even to some extent quietly. With a purchase price of EUR 11,99 it is besides quite favorably.



Enermax UC12-FAB - Well finished exhaust from the house Enermax. By means of existing potentiometer can be adjusted the number of revolutions from 1.300 to 2,300 U/min steplessly. Without the pre-mounted grille and in the number of revolutions reduced, he has even things to the silent exhaust. Hardly vibrations and only slight background noises ascertainable. The fan doubly running in ball bearings brings 160 gram on the balance and has a Tachosignalkabel. The Motorkorpus measures 45.0 mm and the lowest approach tension lies with 4.72 V relatively highly. With a purchase price of EUR 16.30 the Enermax counterpart is besides relatively inexpensive.

Downvolting:
In order to reduce the number of revolutions of an exhaust, its operating voltage must be lowered. A fixed value is reached for example by connecting diodes, a not regulated Widerstandens or by the direct pick-up by the 4-poligen power pack plug. The stepless adjustment of the number of revolutions is obtained with adjustable resistances in the form of mechanical or electronically supported preset potentiometers. Appropriate exhaust price increases promise the highest comfort. In addition, this represents the most expensive possibility at the same time. Most frequently therefore different adaptor cables are used. But here one must differentiate clearly. Because not everywhere where drauf stands, comes for 7 V also 7 V raus. The most violent deviations to the indicated value are to be noticed with cheap adaptor cables with soldered resistance. With such an adaptor cable a tension is spent not rarely of 10 instead of 7 V. Without reservation recommendable and inexpensive are however adaptor cables, which measure their tension directly from the 4-poligen power pack plug. Hereby the exhaust with genuine 5 becomes and/or. 7 V fed. Unfortunately one must do with these cables partially without the Tachosignal. Appropriate models are offered among other things by Sharkoon and Zalman and are available at Modding organization for narrow money.


Decouple:
Contrary to autorims, the impellers are heaved by exhausts only by the few manufacturers. From the imbalance unpleasant vibrations in the enterprise, which are transferred to the underground fastened on it, result. Ressonanzgeraeu resulted from it is usually felt disturbing clearly, as the actual operating noise of the exhaust. Centrically glued on manufacturer labels do not strengthen this effect unfortunately additionally. An effective uncoupling of the underground is therefore obligation and effectuation particularly with not approximately running exhausts true miracles. Meanwhile for nearly all erdenklichen areas of application are offered corresponding shock-mounts. The so-called Gummislicks, own itself not only outstanding for decoupling the housing exhaust, but also for immobilizing the CPU exhaust. Who wants to use a 120 mm of exhausts for example for cooling a Zalman of fan radiator, can this by means of two angles and appropriate oscillation elements effectively of the housing decouple. In addition, applies within the range for offered shock-mounts: It is not all gold which shines. Thus only unsatisfactory results can be obtained e.g. with the silicone documents offered in different sizes. With something know-how the ambitionierte DO-IT-YOURSELF amateur handicraftsman can cause good results even with budgetary appropriations.




Cooling performance:
In order to determine the cooling performance and/or the air volume of the different exhausts, these are used against our recommendations as processor exhausts. Due to the very different numbers of revolutions - 1,100 to 2,350 U/min - all measurements were accomplished in 12 V enterprise. Who obtains the lowest temperatures in interaction with Thermalrights SP-97, the nose in this category has in front. Our candidates do not let themselves be installed however due to their enormous size directly onto the radiator box. That is also well like that, because by their large Motorkorpus from 40,0 to 47.5 mm, the Hotspot can be cooled not directly. Because relevant fan adapters likewise obtain no satisfying results, originally becomes for 80 and 92 mm conceived fan Bracket from the house Zalman uses. With the indicated temperature levels it concerns actual processor core temperatures. These lie usually up to 25% more highly than with Main boards, which pick the processor temperature out over a temperature sensor in the base. Thus the critical range begins with this system only with over 85°C and expresses themselves by instabilities.

Because all exhausts offer an almost identical layout, the number of revolutions can be considered already nearly as indication to the respective cooling performance. The exception places the Noiseblocker SX2 Blue Rev. 2. It cools in relation to the number of revolutions noticeably better than the competition. Otherwise the cooling performance of the individual exhausts without large deviations of their number of revolutions behaved accordingly.
Core temperature XP2200+

Room temperature

CCU temp load

Difference

Titanium TFD-12025M12C

20,5 °C

62,0 °C

41,5 °C

Enermax UC12-FAB

2300 U/min:
21,0 °C

2300 U/min:
64,0 °C

2300 U/min:
43,0 °C

NB SX2 Blue Rev. 2

20,0 °C

64,0 °C

44,0 °C

Yate Loon D12BM-12

20,5 °C

66,5 °C

46,0 °C

Pope 4412 F/2GL

20,0 °C

69,5 °C

49,5 °C

NB SX2 pro Blacksilence

19,5 °C

69,5 °C

50,0 °C

Enermax UC12-FAB

1300 U/min:
20,5 °C

1300 U/min:
71,0 °C

1300 U/min:
50,5 °C

Y.S. Tech FD1212251B-2F

21,0 °C

73,5 °C

52,5 °C

Noise measuring:
The measurement of the A-weighted sound pressure level is predominantly used for noise measuring. By noises according to DIN 1320 appropriate sound events in the frequency range of human hearing from approximately 16 cycles per second to 16 kHz are not understood. They are purely physically detectable after: Sound pressure, frequency, duration and frequency. From this fact in practice two valuation criteria developed, which consider frequency and time-dependent function of the hearing: Periodical evaluation and time-dependent evaluation. For the periodical evaluation evaluation curves are fixed. The most commonly used for noise measurement, which is realized also in the Engelke Sweeper, is the A-weighting.

The noise level is judged by practice-oriented yardsticks. Thus the volume of the entire system - with closed housing and job-conformal distance - is evaluated. In addition special Ultra silents a test computer is used on basis of the Chieftec CS-601 Towers, whose is other acoustic sources only a Ultra silent power pack and decoupled silent a hard disk, which do not affect the sound happening of the radiator. The distances kept during noise measuring can be inferred from the measuring instrument standing down.

As special Schmankerl the operating noises of the respective exhausts were determined directly several times - enkoppelt and not decoupled - instrumentation. Thus all doubts about the effectiveness of the exhaust uncoupling from the way are to be finally vacated. Besides the difference uncovers indulgenceless, which exhaust in the enterprise produces the most vibrations and thus overlaying Ressonanzgeraeu.

Measured volume

Exhaust
decoupled

Exhaust does not decouple

Difference

Y.S. Tech FD1212251B-2F

25,5 railway (A)

26,9 railway (A)

1,4 railway (A)

Enermax UC12-FAB

1300 U/min:
25,7 railway (A)

1300 U/min:
26,1 railway (A)

1300 U/min:
0,4 railway (A)

NB SX2 pro Blacksilence

26,6 railway (A)

28,5 railway (A)

1,9 railway (A)

Pope 4412 F/2GL

27,8 railway (A)

28,2 railway (A)

0,4 railway (A)

NB SX2 Blue Rev. 2

28,6 railway (A)

30,6 railway (A)

2,0 railway (A)

Yate Loon D12BM-12

33,2 railway (A)

33,6 railway (A)

0,4 railway (A)

Enermax UC12-FAB

2300 U/min:
35,8 railway (A)

2300 U/min:
36,4 railway (A)

2300 U/min:
0,6 railway (A)

Titanium TFD-12025M12C

36,7 railway (A)

36,9 railway (A)

0,2 railway (A)

Test computer:

* Main board: Epox 8K3A+ (passive)
* Processor: AMD Athlon XP 2200+ Thoroughbred A (67,9 Watts)
* Processor radiator: Thermalright SP-97 (Triple Heatpipe)
* Contact means: Cooler master Premium Compound (by Shin Etsu)
* Memory: 256 MT Corsair XMS-3000 CL2
* Diagram map: Radeon 9000 pro 128MB (passive, Zalman ZM80A-HP)
* Non removable disk: Samsung SV0802N (ichbinleise® box HDD 10)
* Housing: Chieftec CS-601 (steel sheet, closed)
* Power pack: A Conto NoiseMagic Enermax 1500 (Ultra silent)
* Housing ventilation: none
* Data medium connection: Rounded Silver Cable
* Operating system: Microsoft Windows 98 SE (without ACPI)
* Software: Motherboard monitor, prime 95
* Room temperature: 19,5 - 21.0 °C


Thermalright SP-97 with Zalman fan Bracket

Result:
That from this comparison test no clear winner will come out, I already assumed after the first test runs. Because everyone of the tested exhausts offers a completely individual characteristic. The best total package ties however Pope with that 4412 F/2GL. Here unterm line tunes simply everything. Outstanding quality of workmanship, vibration-free run and a pleasant operating noise. Apart from the minimum background noises at lower numbers of revolutions - almost perfect. The Noiseblocker SX2 pro Blacksilence positively surprised. Thus it is inferior to the Pope in Punkto cooling performance in nothing and is decoupled even clearly quieter. Even at lowest numbers of revolutions the Blacknoise counterpart does not offer audible background noises. If the exhaust is bolted however directly, it produces disturbing Ressonanzgeraeu. The Noiseblocker SX2 Blue Rev. 2 is not only the optically most responding exhaust of the test field, but offers besides the best relation from cooling performance to operating noise. Unfortunately it is not free in the enterprise from background noises and vibrations. If it is however decoupled, it almost makes music on Pope level. Without the factory-installed installed exhaust lattice, arises with the Enermax UC12-FAB more joy than expected. At lowest number of revolutions work ELT it super+quietly and cools in relation to it even quite properly. Besides vibrations and background noises are almost strange to it. As only exhausts in the test field it has even an integrated trim potentiometer - recommendable! The Y.S. Tech Green label offered causes the quietest operating noise by its low number of revolutions with 12 V. However accompanying background noises cloud the otherwise pleasant operating noise. At same number of revolutions the competition makes music partly clearly more pleasantly. Who can do without a Tachosignal and at the only satisfying processing of the Yate Loon D12BM-12 does not disturb themselves, receives the exhaust with the lowest approach tension. Besides work ELT it extremely vibration-poor and freely of background noises. The titanium TFD-12025M12C is bad no way, but surely in the range Modding better waived. By its enormous weight and his loud operating noise its employment in silent systems makes little sense.

Thank saying:
Special thanks for the supply of the Testsamples apply for the managing director of Modding Discout - Mr. Philip Conradi.

Left to the topic:
Modding organization [ selling ]

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