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by jeffbee 1368 days ago
I actually came to complain about that warning. Why does it exist? These are just experimental observations. They are valid forever. Many of the thermodynamics texts I needed at university traced their first editions to the 19th century. They didn’t come with weird disclaimers.
5 comments

While this is broadly true it does ignore some interesting developments in CPU fans. Ten years ago fan sizes were smaller and blade designs less differentiated. Now, there are fans optimized for air flow for air cooled systems and fans optimized for static pressure for cooling radiators in water cooled systems. This opens up a whole bunch of questions which may obsolete these results.

Does the change and differentiation in fan blade design have implications for grill interference noise with regards to this data? Do fans that are optimized for flow versus those for pressure behave the same? Do 80mm, 120mm, and 140mm all have the same grill noise characteristics?

Anecdotal, but even with the new fans, stamped out grills still perform poorly in terms of noise. They're popular because they're cheap.

I'd gladly pay $10 more for a PC case with a less noisy grill, but I can't find any that has this, not even ones that are advertised as "silent".

It's a pretty easy mod if you really want to swap to wire grills. 10 minutes with a dremel and 10 more to make it look ok again and you can have a completely open fan mount.
I did it for honeycomb grill with metal scissors, and replaced to cheap metal wire ring grille. It significantly reduces noise.
You're comparing fundamental laws of physics to consumer product interactions. PC fan design is not static on the quiet end and neither are grill designs though they're less fluid. The interaction between them matters though for the kinds of changes and noise they're trying to measure.
Well, for one thing, the once-excellent model of fan they picked aged as well as an avocado green Chevy Nova with a rusted out coffee can muffler:

https://graphicscardhub.com/best-silent-pc-fans/

That list is terrible. They clearly didn't do any testing and just copied off the spec sheet, and ignored what enthusiasts actually recommend as good fans in 2022 (Corsair fans are terrible, Arctic F12 instead of P12, etc).
Weird, I remember Noctua fans being really good ten years ago too. Choosing Antec feels like a deliberately mid-range choice, but I don't remember how they were thought of back then.
I suspect it's the feature of the website engine. I have seen it on other websites as well - it just appends this disclaimer, after a preset amount of time.
Yes few clicks looking at other articles on that website confirm that they show that warning for all posts older than ~1 year. Makes sense for a blog focusing mostly on latest computer hardware and software benchmarks which can get outdated quit quickly.
It's not weird, and it's not a disclaimer! Many articles I come across online don't have a date on them.