I recently purchased the NH-L9A and promptly broke the fan. I figured "My Fault, I can buy a replacement and everything will be just fine"
Turns out there are MULTIPLE versions of the NF-A9x14 PWM. I was wondering why the cooler was preforming several degrees worse and after checking the installation, the BIOS, and finally getting confused enough to contact Noctua support, I noticed that the fans are not the same.
The one I purchased is: DC12V 1.32W 0.11A
The one that came with the cooler that I broke is: DC12V 2.5W 0.21A
That is incredibly frustrating.
On Noctua's website they list only ONE 92X92X14 fan so there isn't a way to know that information before hand with out digging deeper then I personally would when looking for a 1 to 1 replacement product from the same manufacture. As there are a lot of people on this forum who probably have a NH-L9A or NH-L9I this seemed like good information to share with everyone. I'm going to follow up with Noctua and try to figure out how to move forward.
The temperature difference under full load, with full fan speed, is a full 5-6 degrees Celsius. That was the same difference as the original fan in Silent mode. To pile on to the situation the new fan, at full speed, is also noticeably louder to get that result; so it's literally a worse product in every way and has no reason to exist.
Turns out there are MULTIPLE versions of the NF-A9x14 PWM. I was wondering why the cooler was preforming several degrees worse and after checking the installation, the BIOS, and finally getting confused enough to contact Noctua support, I noticed that the fans are not the same.
The one I purchased is: DC12V 1.32W 0.11A
The one that came with the cooler that I broke is: DC12V 2.5W 0.21A
That is incredibly frustrating.
On Noctua's website they list only ONE 92X92X14 fan so there isn't a way to know that information before hand with out digging deeper then I personally would when looking for a 1 to 1 replacement product from the same manufacture. As there are a lot of people on this forum who probably have a NH-L9A or NH-L9I this seemed like good information to share with everyone. I'm going to follow up with Noctua and try to figure out how to move forward.
The temperature difference under full load, with full fan speed, is a full 5-6 degrees Celsius. That was the same difference as the original fan in Silent mode. To pile on to the situation the new fan, at full speed, is also noticeably louder to get that result; so it's literally a worse product in every way and has no reason to exist.