CA_Steve wrote:try zip ties instead of screws
I might try that. Currently I don't have any zip ties small enough.
Having said that, it's doing a great job. Temps have dropped by 10-15c depending on load, at 25% PWM (with LNA's) which shows as 499RPM in Speedfan, the case, with these Noctuas, is totally silent. Initially I had buyers remorse, spending almost £120 on four fans, but totally worth it now.
3770k is still not delidded, something that needs doing to run near 5ghz, as at 4.4ghz it gets rather toasty when running XMRig-cpu on TRTL or Monero (XMR). This motherboard isn't great for overclocking, despite being named as a better successor they cut everything down including the PWM sections.
I am thinking of getting rid of the DH14 and getting one of those new U12A, the single tower with a pair of these noctua fans on.
This would make cleaning the case a lot easier and allow me to upgrade to more sticks of ram when I retire the PC as a Plex / other server and 24/7 crypto miner.