Pro Pioneer fan failed (?)

apoleon wrote:
Noctua site says the NF-S12A FLX can only go to 1200 RPM ±10%. So it is working OK. But the system is just too hot. Is this fan underpowered for my needs?

Hmm, that fan combination works in my system, and keeps the SYS temperature around 60C and the CPU temperature below 30C (ambient temperature is around 22C). What's your CPU temperature?

Are both fans installed in the correct orientation? Air blows toward the label side of the fan, so the CPU fan should have its label facing IN, and the case fan should have its label facing OUT.

By the way, stretching the case side-panel VERY slightly will help it to slide easily over the thicker-than-stock Noctua CPU fan. The easiest way is to lay the case panel (outer side down) on a circular base, with the CPU vents centered inside the circle -- I used a roll of masking tape as the base -- and then tap on the CPU-vent area with a rubber mallet (or a steel hammer with something between it and the case to protect the case) until you've made a shallow, vaguely-circular bulge in the panel for the fan. The bulge only needs to be a couple of millimeters deep; don't overdo it. If you feel like it, you can also extend the bulge into a horizontal oblong shape to make it even easier to slide the panel on. When the case is assembled, the bulge won't even be noticeable without laying a straightedge on the side of the case.