Thanks for the offer, but it's not a skill issue per se
- I tested multiple fans, but no 40x15mm fans were silent enough, and installing a 40x10mm immediately made the mod feel much less elegant
- The significantly lower airflow of the more quiet fans made me constantly worry about the PSU overheating (it's probably not an issue, but it just bothers me knowing that I am giving the components less cooling than they were designed for.
- I ended up settling for a 40x10 Sunon Maglev, which was bearable noise wise, while still providing good airflow. It always bothered me so much there is no 40x15 Sunon Maglev
- For me to consider Flex ATX I would probably want a PSU that comes with a 40x20mm fan, you have much more fan swap options that way. Or something in the 500-600W range so that I can comfortably run it with a Noctua 40x10 because the system will draw around 200W typically. But 500W Flex PSUs are more expensive than the HDPLex GaN...
On another note, I just realized I can probably try to hide a small power button (and even a USB-C port?) between the slits of the CNC wood panel if I only install 2 fans in stead of 3! Should be fun to experiment with that
Sure, the most elegant and easy way would be the HDPLEX... no fan / no need to mod anything...
But, I wouldn't care too much about overheating / lower airflow for a modded FLEX as long as you don't run it full throttle 24/7 - also keep in mind that the front fans in the case will give you additional airflow around the PSU...
The most heat sensitive components in your PSU are the caps and in the HDPLEX they are not cooled at all. At around 75C they still would (theoretically) last 5 years if you run it 24/7.
For a 4060LP & 65W CPU build, a (good) 300W FLEX with silent fan mod should be feasible without issues IMO. If you get a 500-600W Platinum for that setup, you can probably run it passive and just rely on the case fans.