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Manual Noctua NH-U12 CPU Cooler

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Manual

NH-U9 & -U12

Installation Guide

Mounting hardware for LGA 775:

• 1 LGA-backplate (black, x-shaped without cut-out) [PNr.2]

• 2 long, raised mounting bars (fitting the backplane) [PNr.5]

• 8 short screws [SNr1]

• 4 washers

• 2 fastening brackets without bulge [PNr6]

• 2 mid-sized, silver-coloured springscrews [SNr.2]

• 2 pressure springs

Illustration 7

• 1 K8-backplate (silver-coloured, nexagonal with square cut-out in the

center) [PNr.3]

• 2 fastening brackets with bulge [PNr7]

• 4 short screws [SNr1]

• 2 long, black springscrews [SNr.4]

• 2 pressure springs

Illustration 8

Mounting hardware for K8:

In case you want to use the NH-U on an assembled system, you first

have to remove the mainboard from the case as the cooler has to be

screwed together with the backplate on the back side of the mainboard.

If your mainboard uses a retention module for CPU cooler installation (see

illustration 9), you have to remove it first. Depending on the type of reten-

tion module, it is attached using either screws or plastic pins with bulbous

ends on the back side of the mainboard, which have to be compressed to

Removing the mainboard and

retention module

loosen the module. Should you experience

any difficulties, please consult your main-

board’s manual. If your previous CPU cooler is

attached using a different mounting mecha-

nism, please remove it according to its manual.

2nd Step

Illustration 9

Attaching the backplate on the back side of

the mainboard

Place the backplate [Socket 478: PNr.1, LGA 775: PNr.2] on the back side

of the mainboard, aligning the backplate’s screw sockets with the main-

board’s screwholes.

Caution: The insulated side of the socket 478 backplate [PNr.1] and the

rubber foam square of the LGA backplate [PNr.2] have to face the main-

board!

Now screw the mounting bars [sockel 478: PNr.4, LGA 775: PNr.5] to the

backplate [sockel 478: PNr.1, LGA 775: PNr.2], using small screws [SNr.1]

and washers as shown in illustration 10 (with a socket 478).

a) Socket 478 and LGA 775

3rd Step

Place the K8 backplate [PNr.3] on the back side of the mainboard, so that

the backplate’s screw sockets stick out through the mainboard’s screw-

holes.

Caution: Make sure that the straight sides of

the the mounting bars face the socket and

the bulgings are pointing outwards as shown

in illustration 10!

Illustration 10

Caution: Don’t forget to put 4 washers be-

tween the mainboard and the mounting

bars to avoid damage to the mainboard.

Illustration 11

b) AMD K8:

Attaching the fastening brackets to the heat-

sink

Tightly screw the fastening brackets [socket 478 & LGA 775: PNr.6, K8:

PNr.7] to the copper base of the heatsink using 4 short screws [SNr.1] as

shown in illustration 12 (with socket 478 brackets):

Caution: As the fastening brackets [PNr.7] are screwed directly to the

backplate on K8 mainboards, no mounting bars are requiered.

Illustration 12

4th Step

If there are traces of thermal paste or thermal pads on your CPU, please

clean them off first.

Spread a thin coating of the supplied thermal paste on the CPU.

Caution: Applying too much thermal paste will lower the heat conductivity

and cooling performance!

Applying thermal paste

5th Step

Caution: Peel off the protection film at the bottom side of the heatsink

first!

Attaching the heatsink to the cpu

6th Step

Place the heatsink on the CPU, so that the mounting holes of the fastening

brackets [socket 478 & LGA 775: PNr.6, K8: PNr.7] screwed to to the base

of the cooler align with those of the mounting bars [socket 478: PNr.4, LGA

775: PNr.5] (socket 478 & LGA 775) or those of the mainboard and the

backplate [K8: PNr.3] (K8).

Now screw the fastening brackets [socket 478 & LGA 775: PNr.6, K8: PNr.7]

to the mounting bars [socket 478: PNr.4, LGA 775: PNr.5] (socket 478 &

LGA 775) or the backplate [K8: PNr.3] (K8), employing the pressure springs

and the respective screws [Sockel 478: SNr.3, LGA 775: SNr.2; K8: SNr.4] as

shown in illustration 13 (with a sockel 478 mainboard):

Illustration 13

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