For me, I learned hard way to buy 1 fan and listen myself. Charts only useful to weed out really bad fans. I want pleasant "air" sound with no hums/bearing noise/ticks at ~900 rpms, ie subjective quality of sound.
I bought many 120mm gentle typhoons years ago on reviews, all emit a low pitched hum at 800-900 rpms,couldnt use them. EK varder, bought just 1, similar sound. Fractal design makes a clicking sound undervolted at 900 rpms (140mm). silent wings be quiet 2 140mm, dont like low pitch sound though not as bad as typhoons.
Currently using aerocool deadsilent fans 140mm, barely audible "pleasant air" noise at 900 rpms in my fractal design R5 case on my rads, but several of these fans went bad in 2 years, the horizontal mounted ones dont last.
I have 1 of ML140 fans on way myself, solely because of youtube audio profile.
As for performance, using calibrated probes to measure rad air intake vs water temp, at given rpm, all my 120's have performed within ~15% or 1C with 7-8C detla air/water. Same for 140's I own. So again just boils down to "do I like the sound it makes at 900 rpms".
Yeah.....I wouldn't term that an "upgrade". In a best case scenario, it is a sidegrade.Personally, I think the Noctuas are a far smoother sounding fan (you can't measure that in dB), so I would find it a downgrade without question.
That is weird, but one of them has the noise and the other one is ultimately silent. I decided not to RMA them because it was a twinpack and under 950RPM I cannot hear them at all. My fans never go above 850RPM right now.
Yeah.....I wouldn't term that an "upgrade". In a best case scenario, it is a sidegrade.Personally, I think the Noctuas are a far smoother sounding fan (you can't measure that in dB), so I would find it a downgrade without question.
Wish 140mm noctuas came in black between 1000 and 1500 rpms, one of few well liked fans havent tried. Brown or 2000 rpms on controller with 800-900 rpms near starting volts, both meh.
That is weird, but one of them has the noise and the other one is ultimately silent. I decided not to RMA them because it was a twinpack and under 950RPM I cannot hear them at all. My fans never go above 850RPM right now.
While MLs use a magnetic bearing during operation they do have a 'stabalizing shaft & sleeve' to keep the fan & motor in place in it housing when they are not running. If that shaft /sleeve are not aligned either from shipping damage or manufacture there might make noise similar to conventional bearing noise.
Some people have said they heard grinding like sounds when running at low voltage on variable voltage control. Obviously they need more voltage for magnetic bearing to work .. like more than 7 volts.
Wish 140mm noctuas came in black between 1000 and 1500 rpms, one of few well liked fans havent tried. Brown or 2000 rpms on controller with 800-900 rpms near starting volts, both meh.
Actually they do. The black NF-A14 industrialPPC-24V-2000 IP67 at 12V peaks at 1100rpm and spins down below 150rpm on PWM. I use the 3000rpm model (around 1600rpm at 12V) on coolers and found it to be an excellent option - and cheaper than the 12V industrialPPC versions. @ehumetested them at overclockers.
While MLs use a magnetic bearing during operation they do have a 'stabalizing shaft & sleeve' to keep the fan & motor in place in it housing when they are not running. If that shaft /sleeve are not aligned either from shipping damage or manufacture there might make noise similar to conventional bearing noise.
Some people have said they heard grinding like sounds when running at low voltage on variable voltage control. Obviously they need more voltage for magnetic bearing to work .. like more than 7 volts.
Actually they do. The black NF-A14 industrialPPC-24V-2000 IP67 at 12V peaks at 1100rpm and spins down below 150rpm on PWM. I use the 3000rpm model (around 1600rpm at 12V) on coolers and found it to be an excellent option - and cheaper than the 12V industrialPPC versions. @ehumetested them at overclockers.
Actually they do. The black NF-A14 industrialPPC-24V-2000 IP67 at 12V peaks at 1100rpm and spins down below 150rpm on PWM. I use the 3000rpm model (around 1600rpm at 12V) on coolers and found it to be an excellent option - and cheaper than the 12V industrialPPC versions. @ehumetested them at overclockers.
What is the minimum PWM idle speed / noise level of NF-A14 industrialPPC-24V-3000 IP67 at 12V?
If it is 400rpm or less and quiet I would go with 3000rpm model over the 2000rpm .. just in case I ever need a little more cooling on an extremely hot day when filters are a little dirty.
What is the minimum PWM idle speed / noise level of NF-A14 industrialPPC-24V-3000 IP67 at 12V?
If it is 400rpm or less and quiet I would go with 3000rpm model over the 2000rpm .. just in case I ever need a little more cooling on an extremely hot day when filters are a little dirty.
It is 400rpm or less. Actually 300 or less. And that's why I went with the 3k version. Below 500rpm in my rig they are inaudible at .5M distance. On a hot summer day, rarely see them spin past 1250rpm in normal workloads with my 1-2c above ambient cooler intake temp doyll-lated case - need to slack off filter cleaning for a few months.
It is 400rpm or less. Actually 300 or less. And that's why I went with the 3k version. Below 500rpm in my rig they are inaudible at .5M distance. On a hot summer day, rarely see them spin past 1250rpm in normal workloads with my 1-2c above ambient cooler intake temp doyll-lated case - need to slack off filter cleaning for a few months.
Actually they do. The black NF-A14 industrialPPC-24V-2000 IP67 at 12V peaks at 1100rpm and spins down below 150rpm on PWM. I use the 3000rpm model (around 1600rpm at 12V) on coolers and found it to be an excellent option - and cheaper than the 12V industrialPPC versions. @ehumetested them at overclockers.
That said, some cats say the A14 IPPC 3000 24V running on 12v are quiet and have a rpm range of 300-1500rpm. But unless they are less money than the PH-F140MP, ...
Ill have 2 of the NF-A14 industrialPPC-24V-2000 IP67 PWM on 1/23, hopefully they dont tick at 900 rpms on a fan controller, dont use pwm. I only run fans at constant ~900 rpms since silent in my FR5 case and air to water delta maxes at 8C, and only that high if stress testing both cpu/gpu since 2x280 rads for single Oced titan X and Oced 6800k. If noctua made regular version in black, would have tried those long ago.
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