To install an AIO liquid cooler, fit the correct socket hardware, mount the radiator so its highest point sits above the pump where possible, and connect each cable according to the cooler’s wiring diagram and motherboard manual. There is no universal rule that every pump belongs on AIO_PUMP: some leads power the pump, while others only report its speed.
Before you install the cooler
Read the manual for the exact cooler and motherboard. Check CPU socket compatibility, the case’s radiator and fan clearance, tubing reach, and which bracket or backplate your socket requires. Keep screws and standoffs sorted by socket, and disconnect the PC from power before working inside it.
Check the cooler’s cables and wiring diagram before mounting. Some systems use a supplied splitter or controller, SATA power, internal USB, or proprietary connections; others connect directly to motherboard headers. On select ASUS motherboards, a Q-Connector is supported; if your board does not support it, use the cooler’s pre-installed cables as directed by ASUS’s Q-Connector guide.
How to install an AIO liquid cooler
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Prepare the CPU and mounting hardware
Install the backplate and retention bracket in the orientation shown in the cooler instructions. If this is a reinstallation, clean off the old thermal paste and apply fresh paste as directed. For a first installation, follow the instructions about any paste already applied to the cold plate.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.#1 Best Overall
ARCTIC Liquid Freezer III Pro 360 A-RGB - AIO CPU Cooler, Water Cooling- CONTACT FRAME FOR INTEL LGA1851 | LGA1700: Optimized contact pressure distribution for longer CPU life and better heat dissipation
- ARCTIC's P12 PRO FAN: More power at any speed - more powerful and quieter than the P12, especially at low speeds. Higher maximum speed for optimal cooling performance under high load
- NATIVE OFFSET MOUNTING FOR INTEL AND AMD: Shifting the cold plate center towards the CPU hotspot ensures more efficient heat transfer
- INTEGRATED VRM FAN: PWM-controlled fan that lowers the temperature of the voltage converters and thus ensures reliable performance
- INTEGRATED CABLE MANAGEMENT: The PWM cables of the radiator fans are integrated in the sheathing of the hoses so that only a single visible cable is connected to the motherboard
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Seat and secure the pump block
Remove the cold plate’s protective cover just before installation. Set the pump over the CPU and align its fasteners with the correct standoffs. Start all the screws before tightening them, then tighten gradually in a cross or diagonal pattern to distribute pressure. NZXT’s Kraken Core guide says to start all four retention screws loosely and tighten in an X pattern; ASUS also directs diagonal tightening in its installation guidance. Do not add washers or spacers unless the cooler manual specifically calls for them.
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Mount the radiator and fans
Choose a position that fits the radiator and fans without sharply bending the tubes or putting pressure on the fittings. As a general orientation principle, keep the radiator’s highest point above the pump so air collects away from the pump. Corsair identifies a top mount or a front mount with the tubes at the bottom as good arrangements; if a front mount with tubes up is the only workable option, keep the pump below the radiator’s highest point. See Corsair’s radiator mounting guidance and the Nautilus installation guide. Use the airflow arrow on the fan frame to confirm fan direction.
Rank #2
CORSAIR Nautilus 360 RS ARGB Low-Noise Liquid CPU Cooler – Black- Simple, High-Performance All-in-One CPU Cooling: Renowned CORSAIR engineering delivers strong, low-noise cooling that helps your CPU reach its full potential
- Efficient, Low-Noise Pump: Keeps your coolant circulating at a high flow rate while generating a whisper-quiet 20 dBA
- Convex Cold Plate with Pre-Applied Thermal Paste: The slightly convex shape ensures maximum contact with your CPU’s integrated heat spreader, with thermal paste applied in an optimised pattern to speed up installation
- RS120 ARGB Fans: RS ARGB fans create strong airflow and high static pressure, with easy ARGB control via a compatible motherboard. CORSAIR AirGuide technology and Magnetic Dome bearings ensure great cooling performance and low noise
- Easy Daisy-Chained Connections: Reduce the wiring in your system by daisy-chaining your RS ARGB fans and connecting them to just one 4-pin PWM fan header and one +5V ARGB header
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Connect the pump and radiator fans
Identify each lead by its label and the cooler’s wiring diagram. Connect the pump and fans to the specified headers, splitter, or controller. Follow the motherboard manual for header behavior, fan monitoring, and any UEFI/BIOS settings the cooler maker recommends.
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Connect lighting and control cables
Connect ARGB or RGB lighting only to a header with the specified voltage and connector type. Do not force a plug. Other cooler cables may need SATA power, internal USB, a vendor controller, or a proprietary connection; use the exact product guide to identify each one.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.Rank #3
Antec Skeleton 360 ARGB AIO Liquid CPU Cooler, 360mm, Black- High-Efficiency Cooling Pump – Equipped with a massive copper base plate for superior cooling at all loads.
- Skeleton-Frame Pump Head Design – Unique pump head with vivid ARGB lighting, fully customizable via motherboard sync.
- Extreme Cooling Performance – High-density fins paired with powerful PWM ARGB radiator fans ensure optimized airflow and efficient heat transfer.
- Universal Compatibility – Supports Intel LGA 115X/1200/1700/20XX and AMD AM4/AM5 sockets.
- Durable Build – Elastic high-density tubing and hydraulic bearing fans deliver long-lasting, quiet, and stable operation.
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Check operation before closing the case
Confirm the block is secure and all required power and control connections are in place. Check that the radiator fans spin and that the motherboard or cooler software reports the expected pump and fan readings. If CPU_FAN is unused because monitoring is routed elsewhere, consult the motherboard manual for the correct fan-monitoring setting rather than ignoring a warning by default.
Should the pump connect to CPU_FAN or AIO_PUMP?
Use the header specified by the cooler maker—not a universal rule. A pump lead may supply power and control, or it may only report pump speed (tachometer). The cooler’s wiring diagram identifies which kind of lead you have; the motherboard manual explains the headers’ capabilities and defaults.
Rank #4
- CONTACT FRAME FOR INTEL LGA1851 | LGA1700: Optimized contact pressure distribution for longer CPU life and better heat dissipation
- ARCTIC's P12 PRO FAN: More power at any speed - more powerful and quieter than the P12, especially at low speeds. Higher maximum speed for optimal cooling performance under high load
- NATIVE OFFSET MOUNTING FOR INTEL AND AMD: Shifting the cold plate center towards the CPU hotspot ensures more efficient heat transfer
- INTEGRATED VRM FAN: PWM-controlled fan that lowers the temperature of the voltage converters and thus ensures reliable performance
- INTEGRATED CABLE MANAGEMENT: The PWM cables of the radiator fans are integrated in the sheathing of the hoses so that only a single visible cable is connected to the motherboard
| Cooler example | Pump connection | Radiator fan connection | What the example shows |
|---|---|---|---|
| Corsair Nautilus 360 RS | 4-pin pump PWM lead to AIO_PUMP | Fan extension to CPU_FAN; CPU_OPT or SYS_FAN are listed alternatives if AIO_PUMP is unavailable | Follow the model-specific diagram when the pump lead powers the pump. |
| Corsair H60x/H100x RGB Elite | Pump tach lead to CPU_FAN | Fan power through the supplied splitter | A pump connection may report speed rather than supply pump power. |
| NZXT Kraken examples | Some Kraken Core pump-power connectors may use AIO_PUMP or an equivalent header; some other Kraken 3-pin leads report pump RPM only | Follow the model’s wiring diagram | Connector appearance alone does not tell you whether a lead powers the pump or only reports speed. |
These assignments come from instructions for the named models, not a universal compatibility chart: see Corsair’s Nautilus 360 RS guide, H60x/H100x RGB Elite guide, and NZXT’s Kraken Core guide. Use the exact guide for your model if its wiring differs.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to avoid RGB and ARGB connection damage
Check both voltage and connector type before attaching lighting. NZXT identifies the Kraken Core cap lighting lead as 5 V ARGB and warns against connecting it to a 12 V RGB or UART connector, which can permanently damage the PC or cooler. Its guide says: “Do not attempt to connect the 5V ARGB header on the Kraken Core or its included fan to 12V RGB or UART connectors!” Other coolers may use different lighting connections, so verify the model’s instructions rather than relying on a similar-looking plug.
Quick Recap
Best Value
- 【Better Cooling】 The cooler adopts the fourth generation pump head + 240 cold row size black aluminium fin heat sink plate + protective preparation mesh water pipe + standard configuration 120mm ARGB fan, to create a low vibration, high heat dissipation, low evaporation, high life span of the one-piece water-cooled cooler area unit.
- 【Unique Pump Head】 The octagonal shaped cold pump head adopts the exclusive frame of the 4th generation water pump, the swirling rectangle design and the ARGB halo under the logo luminous marking creates a colourful visual experience, and the life of the cold pump head is up to 40,000 hours with a rotation speed of up to 2800 RPM ± 10%, which ensures that the CPU is provided with excellent heat dissipation for a long period of time
- 【Excellent LED Lighting Effect】Fan and water-cooling header ARGB sync with 5V 3pin on the motherboard to achieve light sync, 1600W colour soft light effect, efficient cooling while providing rich light effect, support light effect series and motherboard sync to avoid insufficient light interface.
- [CPU Fan Parameters]Equipped with dual-fan TL-C12B-S V2, Speed:1500RPM±10%, size: 120x120x25mm, fan noise≤25.6dBA, power supply interface: 4PIN PWM, light interface: 5V/3PIN ARGB, airflow: 66.17CFM(MAX), with PWM and ARGB function, can automatically adjust the speed according to the CPU temperature, provide strong airflow and lower noise, ARGB light colour can be manually adjusted.
- 【Convenient Installation】 AIO cooler compatibility, support AMD & Intel slots, support AMD: AM4/AM5, Intel: lga1150/1151/1155/1156/1200/1700, comes with accessories that can be installed on the corresponding platforms, the installation is simple, can be installed according to the instructions and tutorials.
Final checks and common connection problems
- The motherboard shows a CPU fan warning: Confirm the cooler’s fan-monitoring lead is connected as directed. If the cooler routes monitoring elsewhere and CPU_FAN is intentionally unused, look up the board’s fan-monitoring options in its manual.
- The pump or fans do not behave as expected: Recheck the model’s wiring diagram and motherboard header instructions. AIO_PUMP, CPU_OPT, CPU_FAN2, and similar headers can have different capabilities or default speed behavior on different boards; some may default to full speed.
- The radiator does not fit cleanly: Reassess radiator and fan clearance and tube routing before tightening everything down. Avoid sharp bends or tension at the fittings, and choose another supported case position if needed.
- The lighting does not connect: Verify voltage and connector type against the cooler guide. Do not force a connector or try a different header based only on its shape.
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