Kraken Core 240 RGB

Q: What’s the best way to connect and sync RGB lighting on pump cap and fans?

Use your motherboard’s 5V ARGB headers: If your motherboard has more than one header: Plug the pump cap and fans into separate headers for more individual control. If your motherboard has only one header: Daisy-chain them by connecting the fan’s 5V female connector to the 5V male connector from the pump cap, then plug that into the single header. Both methods work. Using separate headers gives you individual control, while daisy-chaining keeps the cap and fans perfectly in sync.

240 mm RGB AIO Liquid Cooler

Series: Coolers

Color:Black

Variant

Inside the Box

Kraken Core
RGB Core Single-Frame Fan
Installation accessories

Resources

Manuals & Documentation

Overview

The NZXT Kraken Core AIO delivers powerful, quiet liquid cooling with a high-performance pump, PWM fans, and vibrant RGB lighting. Easy to install and compatible with the latest Intel and AMD sockets, it keeps your CPU cool, your system quiet, and your build looking clean.

Cool and Quiet: A powerful 3,100 RPM pump keeps your CPU cool during heavy gaming and multitasking, while minimizing noise.
Simple Connectivity: Connects directly to your motherboard for easier cable management and a faster build—no extra controllers required.
Optimized Fan Blades: High static pressure RGB Core (EV-B Version)* fans efficiently push air through radiator fins for stronger cooling with less noise.
Adjustable Fan Controls: PWM-enabled fans allow precise adjustments for efficient performance you can customize to your setup.
Single-Frame Design: Multiple fans in one solid frame reduce screws and cables, making installation easier and your build cleaner.
Easy Installation: Tool-free brackets, pre-applied thermal paste, and flexible tubing make setup fast and frustration-free.
Radiant RGB: Plug into your motherboard's 5V ARGB header. RGB effects are controlled through your motherboard's lighting software.
Ready for Intel or AMD: Includes mounting hardware for the latest AMD® and Intel® sockets, including AM5 and LGA 1851.

*EV-B Version: Kraken Core-only 5V ARGB single-frame fan. Not the standalone F RGB Core retail fan.

Strong Cooling. Streamlined Design.

Kraken Core delivers reliable liquid cooling with vibrant RGB and a clean, builder-friendly design. It’s a great fit for new builds, upgrades from air cooling, or anyone who wants quiet, reliable performance in a streamlined setup.

Cool and Quiet

A powerful pump keeps CPU temperatures under control during heavy gaming or multitasking, running at 3,100 RPM to deliver efficient cooling with minimal noise.

Optimized Fan Blades

High static pressure fans push air through radiator fins for stronger, more efficient cooling.

Single-Frame Design

Multiple fans in one solid frame—fewer screws, fewer cables, cleaner build.

Easy Installation

Tool-free brackets and pre-applied thermal paste make setup quick, clean, and frustration-free.

Two CPU cooling brackets with Intel and AMD logos on a gradient background

Ready for Intel or AMD

Includes mounting hardware for the latest Intel® and AMD® sockets, like LGA 1851 and AM5.

Simple Connectivity

Connects directly to your motherboard—no extra hubs or controllers needed. Fewer cables mean faster setup and easier cable management.

Radiant RGB

Customize pump and fan lighting using your motherboard’s 5V ARGB header. Just plug in and personalize your setup for a clean, unified look.

Tech Specs

Motor Speed

3100 ± 310 RPM

Rated Power

12V DC, 0.3A, 3.6W / 5V DC, 1A, 5W

RGB LED

19 LEDs

Dimensions

Diameter: 70.56 mm, Height: 64.24 mm (with cold plate)

Cap Material

Plastic

Cold Plate Material

Copper

Dimensions

277 x 120 x 27 mm

Radiator Material

Aluminum

Length

400 mm

Material

CIIR+EPDM Rubber with Nylon Braided Sleeve

Model

F240 RGB Core Fan (EV-B)

Quantity

Dimension

240 x 120 x 26 mm

Speed

500–2,400 ± 250 RPM per fan

Airflow

75.05 CFM per fan

Static Pressure

3.07 mm H2O per fan

Noise

31.9 dBA per fan

Rated Power

12V DC, 0.74A, 8.88W / 5V DC, 0.45A, 2.25W

Bearing

Fluid Dynamic Bearing

Output LED

8 LEDs per fan

Connector

1x 4-pin PWM Fan, 1x 5V RGB

Cable Length

600 mm

Material

Plastic, Rubber, PCB

Life

60,000 hours

Intel

Intel® Socket LGA 1851/1700 & 1200/115X, Intel® Core™ Processors

AMD

AMD® Socket AM5, AM4, AMD Ryzen™ Processors

Warranty

5 Years

Model Number

RL-KR24C-B1

UPC

810074846288

EAN

5056547206226

Frequently Asked Questions

What’s the best way to orient the tubing with the Kraken Core pump cap?

For best performance and reliability, route the tubes from the right side of the pump. This helps prevent air bubbles from collecting in the pump, which could otherwise cause noise or reduce cooling efficiency over time.

Keep in mind that the pump cap logo has a fixed orientation, so the appearance won’t change if you rotate the cap.

Do I need NZXT CAM software to control Kraken Core?

No. Kraken Core connects directly to your motherboard for both cooling and lighting. The fans connect through a PWM cable you control in your BIOS or motherboard software, while the RGB plugs into a 5V ARGB header for lighting effects.

You can still use CAM alongside Kraken Core if you’d like. While it doesn’t directly control the cooler pump speed, CAM lets you monitor system performance and sync lighting across other NZXT products.

Why do Kraken Core fan speeds look inconsistent in BIOS and software?

Some early Kraken Core units may show jumpy RPM readings in BIOS or monitoring software due to how the tachometer (TACH) signal is reported. The fans themselves run smoothly, cooling and noise are unaffected. RPM readings also have a normal tolerance of about ±250 RPM (10%) above or below the maximum value. Later units were updated to provide a more stable signal, but if you see this behavior, there’s no need to replace your cooler.

Read the full story here.

What’s the best way to connect and sync RGB lighting on pump cap and fans?

Use your motherboard’s 5V ARGB headers:

If your motherboard has more than one header: Plug the pump cap and fans into separate headers for more individual control.
If your motherboard has only one header: Daisy-chain them by connecting the fan’s 5V female connector to the 5V male connector from the pump cap, then plug that into the single header.

Both methods work. Using separate headers gives you individual control, while daisy-chaining keeps the cap and fans perfectly in sync.

Can I adjust the pump speed on Kraken Core?

No. The pump is designed to run at a fixed speed and doesn’t support speed adjustment. Attempting to change the speed through third-party software may cause damage. In your BIOS, we recommend setting the pump header to run at full speed.