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CORSAIR Nautilus 240 RS Liquid CPU Cooler – 240mm AIO – Low-Noise – Direct Motherboard Connection – Daisy-Chain – Intel LGA 1851/1700, AMD AM5/AM4 – 2X RS120 Fans Included – Black
Corsair

CORSAIR Nautilus 240 RS Liquid CPU Cooler – 240mm AIO – Low-Noise – Direct Motherboard Connection – Daisy-Chain – Intel LGA 1851/1700, AMD AM5/AM4 – 2X RS120 Fans Included – Black

4.6(3.7K+ reviews, all variants)
entry$50-$99
#3 in Water Cooling Systems
wattage
1.5 watts
fan size
240mm
material
Metal, Plastic
connector
4-Pin
compatible
Desktop
cooling method
Water

Want the best price and purchase timing?

Our AI advisor analyzes real-time pricing across all channels to find you the best deal.

AI Verdict

This 240mm AIO with a 20 dBA pump and 253W TDP cooling capacity is for builders wanting straightforward CPU cooling without extra software or RGB complexity.

Strong Fit

This AIO is a strong fit for mainstream and performance-oriented builds that need effective CPU cooling without the complexities of software control or RGB. Its 253W TDP cooling capacity and 20 dBA pump address core performance and noise concerns directly. The daisy-chaining feature simplifies wiring, which is a practical benefit for many users.

If you need more cooling capacity for extreme overclocks or larger CPUs, look for 360mm or larger radiators with higher TDP ratings.

Regret Score™

Very Low Risk

Lower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity

15/100
vs. 1,285 Power & Cooling we've analyzedSafer than 91%
Hidden Defects
7/35

Issues discovered after purchase

Achilles' Heel
0/25

Critically weak dimension

Expectation Gap
4/20

Amazon rating vs actual quality

Fit Risk
4/20

Chance this product isn't for you

BuyChoice Score
4.1

Pros

  • The pump operates at a whisper-quiet 20 dBA, contributing to low system noise.
  • Daisy-chained fan connections simplify wiring, reducing the number of cables connected to the motherboard.
  • Pre-applied thermal paste and a convex cold plate design streamline installation and ensure maximum CPU contact.
  • Compatible with a wide range of modern CPU sockets, including Intel LGA 1851/1700 and AMD AM5/AM4.
  • Capable of cooling CPUs with up to 253 watts TDP, maintaining temperatures between 65-75°C under load for high-performance processors.
  • Connects directly to the motherboard, eliminating the need for additional software or controllers.

Cons

  • RS120 fans can become audibly loud, with users reporting them sounding like a 'jet taking off' past 30% RPM.
  • The pump block, with its cover, measures over 55mm, potentially causing fitment issues in some small form factor (SFF) cases.
  • Fan cables could be longer, which some users have noted as a minor inconvenience during installation.

Dimension Scores

Efficiency & Output8/10

The cooler is rated to handle up to 253 watts TDP, keeping high-performance CPUs at 65-75°C under load.

Noise Level6/10

The pump operates at a low 20 dBA, but the RS120 fans can become loud at higher RPMs, with users reporting a 'jet taking off' sound.

Build Quality7/10

It features a copper cold plate, braided tubing, and Corsair AirGuide technology, with a 5-year warranty mentioned for the 360mm variant.

Cable Management8/10

The daisy-chainable RS fans significantly reduce cable clutter by connecting to a single motherboard header.

Best For

  • PC builders prioritizing quiet operation for their CPU cooling system.
  • Users seeking a straightforward AIO installation without proprietary software or complex RGB ecosystems.
  • Systems with Intel LGA 1851/1700 or AMD AM5/AM4 processors requiring up to 253W TDP cooling.
  • Builds where minimizing cable clutter is a priority due to daisy-chainable fans.

Not Recommended For

  • Small form factor (SFF) PC builds where pump block height is a critical dimension, as the pump with cover can be around 70mm.
  • Users who require extensive RGB customization or software control for their cooling components.
  • Enthusiasts pushing extreme overclocks beyond the 253W TDP rating.

Watch Out For

  • The pump block's height, around 70mm with its cover, can prevent installation in compact SFF cases, requiring users to remove the cover for fitment.
  • Fans can generate significant noise at higher RPMs, with one user describing them as sounding like a 'jet taking off' above 30% speed.
  • Installation instructions for the non-RGB version have been described as lacking detail on fan cable connections, despite the daisy-chain feature.

Full Specifications

UPC840006687528
ASINB0DF7DH5Z5
BrandCorsair
ColorBlack
Voltage12 Volts (DC)
Wattage1.5 watts
MaterialMetal, Plastic
Item Weight2.65 pounds
Noise Level36 Decibels
ManufacturerCorsair
Cooling MethodWater
Number of Items1
Item model numberCW-9060088-WW
Compatible DevicesDesktop
Product Dimensions10.87 x 4.72 x 1.06 inches
Computer Memory TypeDIMM
Power Connector Type4-Pin
Item Dimensions LxWxH10.87 x 4.72 x 1.06 inches
Global Trade Identification Number00840006687528

What Buyers Say

The most surprising finding is how many users appreciate the lack of iCUE software dependency, making it a truly plug-and-play AIO. Many highlight its cooling performance for its price point, especially for non-RGB builds. However, the fan noise at higher speeds is a recurring complaint, and some SFF builders have noted the pump block's height as a potential issue. The daisy-chaining feature for fans is consistently praised for simplifying the build process.

“Man, this thing just works. No stupid software, temps are chill even when I'm gaming hard, but holy cow, those fans get LOUD when they spin up. Had to tweak the fan curve, but for the money, it's a no-brainer.”

Common Praise

  • The cooler performs well for its price, keeping CPU temperatures low even under load.
  • Installation is straightforward due to pre-applied thermal paste and direct motherboard connection.
  • The daisy-chaining fan connections make cable management much cleaner.
  • The pump operates quietly, contributing to a low-noise system.
  • No proprietary software (like iCUE) is required, which is a significant plus for many users.

Common Complaints

  • Fans can get very loud at higher RPMs, described as sounding like a 'jet taking off'.
  • The pump block, with its cover, is too tall for some small form factor cases, measuring around 70mm.
  • Some users found the installation instructions for the non-RGB version to be unclear regarding fan cable connections.
  • Fan cables could be longer for easier routing in some chassis.

Ownership Tips

  • After a few weeks, you'll likely adjust the fan curve in your BIOS to mitigate the high-RPM fan noise.
  • The pre-applied thermal paste holds up fine, no need to immediately re-paste unless you're an enthusiast.
  • The direct motherboard connection means one less USB header used and no background software running, which is a subtle but appreciated benefit.
  • If you have a compact case, double-check the pump height clearance; you might need to remove the pump cover for it to fit.

Frequently Asked Questions

Does this cooler require Corsair iCUE software?

No, this cooler is designed for direct motherboard connection and does not require Corsair's iCUE software for control.

Is thermal paste pre-applied?

Yes, the convex cold plate comes with pre-applied thermal paste, speeding up the installation process.

What CPU sockets are compatible with this cooler?

It is compatible with Intel LGA 1851, LGA 1700, and AMD AM5, AM4 sockets.

How loud is the pump?

The pump is designed for low-noise operation, generating a whisper-quiet 20 dBA.

Can the fans be daisy-chained?

Yes, the RS120 fans can be daisy-chained, reducing the number of cables needed to connect to a single 4-pin PWM fan header on your motherboard.

Buying Guide

When you're looking at an AIO (All-in-One) liquid cooler, you're essentially getting a self-contained water cooling loop for your CPU. It's designed to pull heat away from your processor more efficiently than air coolers, especially for higher-wattage CPUs. You need to consider the radiator size (like this 240mm one) to ensure it fits in your case, and the TDP (Thermal Design Power) rating to make sure it can handle your CPU's heat output. Simpler AIOs like this one connect directly to your motherboard, giving you basic control through your BIOS.

240mm AIO

This refers to the size of the radiator, which is 240mm long and typically holds two 120mm fans. A larger radiator generally means better cooling capacity, but also requires more space in your PC case. Think of it like a bigger car radiator – more surface area to dissipate heat.

20 dBA pump

This is the noise level of the pump itself, measured in decibels. 20 dBA is very quiet, meaning the pump won't be a noticeable source of noise in your system. It's like the hum of a quiet refrigerator; you'll barely hear it.

253W TDP

TDP (Thermal Design Power) indicates the maximum amount of heat a cooling system can dissipate. If your CPU generates more heat than the cooler's TDP rating, your CPU will run hot and potentially throttle performance. This 253W rating means it can handle most modern mid-to-high-end CPUs without breaking a sweat.

Daisy-Chain Connections

This feature allows you to connect multiple fans to each other, and then only one fan cable connects to your motherboard. This drastically reduces the number of cables you need to manage in your case, making your build look much cleaner and easier to assemble. It's like plugging a power strip into a single wall outlet instead of every device directly into the wall.

Alternatives

If this cooler doesn't fit your needs, look for AIOs with larger radiator sizes (e.g., 360mm) for higher TDP CPUs, or consider air coolers if you prioritize absolute silence and have ample case clearance.

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