This isn't a problem. The article says that this is only if you're looking to trade-off performance for less noise:
> In other words, we would only recommend upgrading to the NF-A12x25 G2 if you seek to lower noise levels as much as possible and if you are willing to sacrifice the maximum performance headroom in worst-case scenarios that the G1 HS-PWM fan provides.
> In addition to redesigning and testing the Noctua fan grill, we also evaluated various other scenarios. These included replacing the NF-A12x25 with its G2 variant and incorporating an additional 8cm fan for exhaust purposes.
That's a very cool hack, but there are tons of things on a system that aren't the CPU that would benefit from some moving air. A fan somewhere in the system that just moves a bit of air would, I think, really contribute to the overall longevity.
> It must be noted that customer safety and EMC requirements for the mini PC, a standalone electrical item, differ from those for hardware components (such as the PSU) designed to be inside a PC case. The safety standard suggests that ventilation openings on case side panels need to be less than 5mm in diameter.
...but it's a plastic panel? I don't understand how this helps with EMC.
It's more than just the Noctua fan. The fan grille is a contributing factor to noise [0]. The new design features in the article could reduce the noise of any 120mm fan.
Well the fan in the Framework desktop is some kind of purpose built high performance Noctua fan that is significantly louder than usual. So they are suggesting to use the new grill with the fan that comes with it so you don't encounter throttling.
Noctua makes 2000rpm and 3000rpm max variants of the NF-F12. Otherwise, through (over)engineered geometry and materials, their fans usually do push the most air volume and pressure at a given volume level, with a more pleasant sound profile. But you pay for it.
Noctua fans are quieter than most for a given airflow level.
They have a range of fan speeds going up to very high speeds.
Many people doing modifications will substitute a lower airflow fan for even more noise reduction, which might be why you’re thinking they flow less. That’s a function of fan choice, though.
Noctua fans perform very well on a noise-adjusted basis.
Is Framework planning to ship this at some point? It seems pretty bad to need to print your own grill when Noctua collaborated on the project.
This isn't a problem. The article says that this is only if you're looking to trade-off performance for less noise:
> In other words, we would only recommend upgrading to the NF-A12x25 G2 if you seek to lower noise levels as much as possible and if you are willing to sacrifice the maximum performance headroom in worst-case scenarios that the G1 HS-PWM fan provides.
It doesn't say that:
> In addition to redesigning and testing the Noctua fan grill, we also evaluated various other scenarios. These included replacing the NF-A12x25 with its G2 variant and incorporating an additional 8cm fan for exhaust purposes.
That's for switching to the NF-A12x25 G2 fan (from the G1), which has a lower max RPM. The improved side panel appears to be a strict improvement.
This guy has built a completely silent version: https://smallformfactor.net/forum/threads/monochrome-2-my-cu...
That's a very cool hack, but there are tons of things on a system that aren't the CPU that would benefit from some moving air. A fan somewhere in the system that just moves a bit of air would, I think, really contribute to the overall longevity.
> It must be noted that customer safety and EMC requirements for the mini PC, a standalone electrical item, differ from those for hardware components (such as the PSU) designed to be inside a PC case. The safety standard suggests that ventilation openings on case side panels need to be less than 5mm in diameter.
...but it's a plastic panel? I don't understand how this helps with EMC.
There is no way the EMC situation is maintained with that modification.
So just use Noctua fans? That'd do it.
It's more than just the Noctua fan. The fan grille is a contributing factor to noise [0]. The new design features in the article could reduce the noise of any 120mm fan.
[0] https://news.ycombinator.com/item?id=32923226
Well the fan in the Framework desktop is some kind of purpose built high performance Noctua fan that is significantly louder than usual. So they are suggesting to use the new grill with the fan that comes with it so you don't encounter throttling.
Its been a while since I looked into "just use Noctua" for $another_use_case, but ...
Isn't the problem with Noctua (and similar "silent" fans) that they don't offer the same airflow throughput as their noise making bretheren ?
So sometimes its not as easy as "just use Noctua" ?
Noctua makes 2000rpm and 3000rpm max variants of the NF-F12. Otherwise, through (over)engineered geometry and materials, their fans usually do push the most air volume and pressure at a given volume level, with a more pleasant sound profile. But you pay for it.
Noctua fans are quieter than most for a given airflow level.
They have a range of fan speeds going up to very high speeds.
Many people doing modifications will substitute a lower airflow fan for even more noise reduction, which might be why you’re thinking they flow less. That’s a function of fan choice, though.
Noctua fans perform very well on a noise-adjusted basis.
For some applications such as cooling of an extruder for a 3D printer Noctua fans indeed don't offer sufficient airflow.
But I don't think that's an issue for computer cooling unless you're talking about extreme circumstances.