You'd need a really big blower to have any cooling effect on a rad of this size!

Thank you :)

Yeah adding a second fan in series will increase the pressure and might reduce temps by a couple of degrees, but at the cost of more noise and also more space.

It would make a great video!

@@FanPhys Costs much less noise than expected - 3 dB, obviously, on average, but modulation may occur which is to taken care of. While a twice as high CFM fan will be usually 12 dB louder. The gain is essentially double if not more with denser heatsinks. But mostly costs more money and takes double the space. Static pressure performance of the fan matters only in case of very thick or very dense radiators combined with very weak static pressure fans. For example, if I put 1.5 mmH2O slowish bequiet Silent Wing 3 fans (~1400 rpm) on a 60 mm thick radiator with 32 FPI density, I get a quarter of the cooling performance per RPM because the single fan does not produce enough static pressure to pull air through properly and the airspeeds are very low. Even doubling the fan speed with this design which produces many times the noise just does not cut it. Using almost any other fan, however, will handle it, as will a push/pull configuration since that converts it the radiator into a duct.

Static pressure highest when all airflow is blocked. He measured it by gradually blocking exhaust on that test box. As far as i see it - even with lower SP some fans "scoop" and move much more volume of air, despite being unable to keep it pressurized

@@RelentlessRage I know the sp is max when airflow is 100% blocked, i'm asking about the sp values written in the table, IF they where measured with blocked airflow they don't say much about the behavior when the air is just partially blocked like shown in the video, supporting what he was saying in the video.

You could take the effort and watch his videos showing his methodology.

@@MiesvanderLippe i did, seems like you don't read...

Yes I measured the static pressure against different levels of flow... the data is in a previous video. Peak efficiency is usually somewhere in the middle of the curve and is broadly the same for all axial fans.

Go for air unless you actually need liquid.

The T30 is clearly the strongest 120mm fan at the moment, but 140mm coolers are superior both in air and AIO if you have room in your case. I had a Kraken X61 a few years ago and it was very good, but also expensive, and I'd always go for air over AIO personally.

you should look at reviews from people that actually test the fans correctly and not use them way outside their specifications.

Thanks for the comment! I appreciate the offer and it does sound like it could be interesting; however I don't have time at the moment because of work commitments. In terms of efficiency it's the Noctua NF-F12 in the lead, drawing only 60mA at full speed. The quietest fans (Gentle Typhoon, Arctic P12, Lian Li P28, Noctua A12x25) are consistently the weakest in terms of max. static pressure performance, but as you can see it doesn't always translate to poor thermal performance.

It's nice being the one conducting the tests rather than one of many armchair experts criticising the methodology. :)

@@FanPhys So ad hominem instead of acknowledging the problems - a classic.

@@ABaumstumpf so if I don't agree with you, I'm wrong? Also classic!

@@FanPhys "so if I don't agree with you, I'm wrong? Also classic!" And more fallacies. But thanks for showing everybody so clearly that you are in fact no interested in doing actual tests and comparing the fans but rather just want to virtue-signal and insult everybody that does not make the same mistakes as you do. And yes - really classic of you to not even attempt to make an argument. Classic, predictable and pathetic. next you will try moving the goalpost with a few more insults, right?

@@ABaumstumpf Thank you for your comments!