Noctua A12 blower issues when paired with Gigabyte TRX40 Master.
Noctua A12 blower issues when paired with Gigabyte TRX40 Master.
Hello. There seems to be an unusual issue with this motherboard. Some of my Noctua NF-A12x25 boards fail to boot at startup or appear to experience a seizure-like start-up attempt, while others function normally. I’ve used identical fans and hubs from my previous X299 build without any problems for a year. What’s more puzzling is that with multiple fans on the same hub or splitter, only one or two spin while the rest remain inactive. Occasionally, one fan starts, another clicks as if trying to boot, and a third stays completely still. The behavior varies between fans. I’ve tested power delivery from the fan headers—this board can supply up to 2A per header (these are low-power fans)—and also tried connecting directly via my Corsair AX1600i. Even with a Silverstone 8 fan hub in my last build, I attempted a deepcool hub and a simple fanout splitter without any wiring, but nothing changed. I’m struggling to understand what’s happening here. EDIT: After further testing, it appears Nidec Gentle Typhoons are unaffected by this board. The GTs operate smoothly on all headers. When adjusting speed, some Noctua fans randomly stop spinning without a restart option until the system is completely powered off and restarted. Restarts don’t help. This issue doesn’t affect the GTs, all fans, or the Noctua boards, and they work perfectly with an AsRock X299 Fatal1ty i9 XE.
They might not start properly if connected straight to the fan header, possibly due to a low RPM setting.
minimum requirements for these fans are 450 RPM. I set them around 1000 RPM (50%). I have two fans with their own headers, and one has stopped working once before—maybe it happens more often than expected.