Do they?It would be interesting to see some long term tests on noctua fans...
A big part of their appeal, and expensive price is they put a lot of R&D into fan design...
I mean tower style heat sinks basically are what they are aside from overall size and number of heat pipes... So I don't think there's much that can be done to improve air coolers in future from that respect.
At first I thought they did a lot of R&D, but I do wonder.
Crazy high priced with very few improvements reaching consumer makes me wonder how much is actual R&D and how much is hype.
As for future improvement, while things have definitely slowed down compared to say 10 years ago, we are seeing some significant improvements in last 6 months or so with new Thermalright coolers like Frost Vortex 140 SE, and several others, like Cryorig OE10 and TE10 from Thermalright,
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