noctua NM-AMB12 Offset Mounting Bars Instruction Manual
- June 12, 2024
- Noctua
Table of Contents
noctua NM-AMB12 Offset Mounting Bars Instruction Manual
Required mounting parts
AMD stock backplate (pre-installed on the motherboard)
NM-AMB12a mounting bar
NM-AMB12b mounting bar
4x NM-APS4 grey plastic spacers (not included)
4x NM-ALS1 long screws(not included)
Caution
If your CPU cooler is already installed, please first unscrew it from the original mounting bars. Then, unscrew the original mounting bars from the backplate and remove them.
If your CPU cooler is not yet installed, please first remove the motherboard’s heatsink retention module and put the plastic spacers over the threads of the motherboard’s back plate, as described in the manual that came with the cooler.
Installing the mounting bars
Install the offset mounting bars as shown below:
On AM5 and Ryzen 5000/3000 series AM4 CPUs, choose the -7mm offset hole
position to ensure optimal contact quality and performance.
NOCTUA NM-AMB12 INSTALLATION MANUAL
On other AM4 CPUs, or if there are any compatibility issues in the offset position (e.g. clearance with motherboard heatsinks), please choose the standard position (0).
Offset position
Standard position (no offset)
Offset position
Standard position (no offset)
Caution: Make sure that the “CPU →” markings point towards the CPU and
that the NM-AMB12a bar with the
“NORTH” marking is installed on the north (top) side of the socket and the NM-
AMB12b bar with the “SOUTH” marking is installed on the south (bottom) side of
the socket.
Fix the offset bars using the screws that came with the cooler.
Caution: Gently tighten the screws until they stop, but do not use
excessive force (max. torque 0.6 Nm).
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