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GG Gamer guide · Hardware

How to install a liquid cooler?

An AIO (All-In-One) looks complicated but actually comes down to 5 clear steps. This guide takes you from opening the box to the first boot with zero scares.

June 12, 20266 min read

What do you need before starting?

  • The AIO (block + radiator + tubes + fans).
  • Thermal paste (many AIOs include it pre-applied).
  • A Phillips #2 screwdriver.
  • Your motherboard manual (to check the socket hole spacing).
  • An anti-static surface or ESD strap to avoid damaging components.

The best AIOs on the market like theArctic Liquid Freezer III Pro 360or the Corsair Nautilus 360 RS ARGBinclude every accessory needed for the most common sockets.

Preparation

  1. Turn off the PC, unplug it from the wall and discharge static by touching the metal chassis.
  2. Remove the previous cooler (if any) and clean the old thermal paste with isopropyl alcohol.
  3. Identify your CPU socket (AM4, AM5, LGA1700, etc.) and pick the correct bracket included with the AIO.
  4. If you need to install the rear backplate, remove the motherboard from the case to access the back.

Step-by-step installation

  1. Mount the backplate: place the rear plate into the correct holes for your socket. Many modern AIOs have an adjustable universal backplate.
  2. Install the standoffs: thread the standoff screws into the backplate through the motherboard until firm — do not overtighten.
  3. Apply thermal paste: if the block does not come pre-applied, put a pea-sized amount in the center of the processor.
  4. Seat the block: lower it straight down onto the CPU and tighten the screws in a diagonal pattern (not in a circle) for even pressure.
  5. Mount the radiator: fix it in the case slot (front or top) and connect the fans. See the next section for correct orientation.
  6. Connect the cables: AIO pump to the motherboard's AIO_PUMP orCPU_OPT header. Fans to the hub or to the board's fan headers.

Where to mount the radiator? Correct orientation

The radiator's position affects thermal performance and pump longevity.

  • Front (intake, blowing inward): cool air hits the radiator directly. The most efficient position for CPU cooling.
  • Top (exhaust, blowing outward): heat leaves the case directly. It warms the surrounding components less.
  • Tube position: always pointing down or sideways, never upward. It prevents air from getting trapped in the pump.

Tip: when in doubt, front-mounted with fans blowing inward gives the best temperatures in most cases.

Common mistakes when installing an AIO

  • Connecting the pump to the CPU fan header: the pump must go toAIO_PUMP or CPU_OPT to run at constant speed.
  • Too much thermal paste: more is not better. Excess can spill onto the socket and worsen conductivity.
  • Overtightening screws: it can bend the motherboard or the processor's IHS. Tighten until you feel resistance, no further.
  • Not checking socket compatibility: confirm your AIO includes the bracket for your socket before installing.

Basic AIO maintenance

A well-maintained AIO lasts 5 to 8 years without issues. Maintenance is minimal:

  • Clean the fans with compressed air every 6 months to prevent dust buildup.
  • Check that the pump makes no unusual noise (persistent bubbling means trapped air).
  • Replace the thermal paste every 2–3 years if temperatures creep up over time.

If you are considering the jump to liquid cooling, browse ourliquid cooling catalog with 240 mm and 360 mm AIOs for every budget.