|360° View - Noctua NH-U12P Heatsink
Frostytech's test methodology is available
The 120x120x25mm NF-P12 fan at the
heart of the Noctua NH-U12P heatsink spins at 1300RPM by
default. Optional in-line resistors can reduce fan speed from that level to 1100RPM
or 900RPM if quieter operation is desired. A standard 3-pin motherboard header provides
power. The nine bladed fan is ships without a fan
grill. A second fan, 120mm, 92mm, or 70mm can also be
attached to the other side of the heatsink (second fan not provided).
Looking at the top of the Noctua NH-U12P heatsink we see the
tips of the four 6mm diameter U-shapped copper heatpipes. The 38 nickel plated
aluminum fins are each roughly 126 x 61mm in size; that's lot of cooling
surface area. Each aluminum fin is nickel plated so it can be soldered
to the copper heatpipes which run from top to bottom. The tabs on either edge are
for the wire fan clips to lock into.
NH-U12P stands 149mm tall. Its widely spaced nickel plated aluminum fins are all
soldered to the four copper heat pipes which rise up from
the base. There are no specific instructions for orienting the Noctua NH-U12P in a
specific way, other than setting the fan to blow hot air towards
the rear of the case. The first fin from the base up is elevated 42mm to give
capacitor clearance. Each fin is 0.42mm thick and spaced 2.6mm from the next. The
copper portion of the base ranges from 2mm to 4.3mm thick.
Heatsink Side B:
The Noctua NH-U12P is a big heatsink with widely spaced metal fins
as heatsinks go, this permits slower RPM fans to be used. The
base is shown without any of the processor specific mounting hardware installed.
The base of the Noctua NH-U12P heatsink is
fabricated from a block of nickel-plated copper to which all four copper heatpipes are soldered. The base
has a machined surface finish, done with a slight ridge texture. The metal is
very slightly domed in the center, slight enough to ensure good contact with the CPU
IHS and not distorted enough to require lapping. Surface roughness is
~48 microinches, which is good. The portion of the base that comes in contact
with the CPU measures 40x38mm in area.