Noctua NH-U12S Slim Tower Heatsink

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The most critical aspect of installation is that the heatsink be securely mounted. A firm mating results in good contact between the heatsink's base and the CPU heatspreader and more efficient heat conduction. Ideally it should also be a simple procedure with the user having to handle as few pieces of hardware as possible.

The U12S uses a slightly updated version of their SecuFirm2 mounting kit. It's put together the same way except LGA775 and LGA1366 support have been dropped. It's understandable given how both platforms are now fairly dated, but punching a few extra mounting holes into their gear couldn't have been that much bother.

The new mounting bar isn't as forgiving as previous variants. The second spring-loaded bolt had to be driven down with some force just to catch the thread on the mounting clip.

Fully mounted on our LGA1155 test board.

Memory can be added and removed without any interference.

The thermal compound footprint indicates strong contact at the center of the heatspreader not as good as past Noctuas. Typically we're used to seeing an even fainter imprint at the center.

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