THE NH-L12SX77 & NH-L9X65 CHROMAX.BLACK

Although similar in height (77/65mm) with a width and length of 128mm and 131mm respectively the NH-L12Sx77 is much larger compared to the 95x95mm size of the NH-L9x65 chromax.black.

The NF-A12x15 PWM 120mm fan can reach speeds of up to 1850RPM to produce up to 55.44CFM of airflow with up to 23.9dBA of noise. On the other hand, the NF-A9x14 HS-PWM chromax.black 90mm fan can go up to 2500RPM to produce airflow levels of up to 33.84CFM with up to 23.6dBA of noise.

Taking a look from the top we see the 55 aluminum fins of the NH-L12Sx77 and the 50 aluminum fins of the NH-L9x65 chromax.black.

From the sides it's easy to see why the NH-L12Sx77 has 56mm clearance for RAM modules and as for the NH-L9x65 chromax.black it's so small so that's not an issue (zero clearance issues for both).

In the above picture you can see the six 6mm copper nickel plated heatpipes of the NH-L12Sx77 and the four 6mm copper black matte painted heatpipes of the NH-L9x65 chromax.black.

Both coolers feature copper nickel plated bases which are almost identical in size.

Out of the box both the NH-L12Sx77 and the NH-L9x65 chromax.black may not be compatible with my old LGA2011 system but thanks to their NM-i20xx kit this isn't an issue.