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Black 240 mm AIO liquid cooler with dual 120 mm RGB fans in a single frame, black pump head, and black tubing

NZXT

NZXT RL-KR24C-B1 Kraken Core 240 RGB liquid cooler

SKU CH-R5A5-VNTY7 MPN RL-KR24C-B1

A 240 mm liquid CPU cooler with a 3100 RPM pump, dual 120 mm PWM fans in a single frame, pre-applied paste and tool-free brackets for Intel LGA 1851/1700/1200/115X and AMD AM5/AM4 sockets

  • TypeLiquid Cooling System
  • Fan Size120 mm
  • ColorBlack

Size 2 Fan Slots (120mm)

  • Powerful 3100 RPM pump keeps CPU cool under heavy loads
  • Direct motherboard connection eliminates extra controllers for simpler cable management
  • Single-frame fan design reduces screws and cables for a cleaner build
  • Tool-free brackets with pre-applied paste make installation fast and frustration-free
  • 5V ARGB lighting syncs through motherboard software for easy personalisation

Core 240 RGB liquid cooler

The NZXT Kraken Core 240 RGB is an all-in-one CPU liquid cooler built for gaming rigs and multitasking workstations. It fits Intel LGA 1851, 1700, 1200 and 115X sockets plus AMD AM5 and AM4 platforms. A 240 mm radiator and two 120 mm fans come pre-assembled in a single frame. The unit ships new with black finish and pre-applied thermal paste.

Thermals noise and power

A 3100 RPM pump circulates coolant through the radiator to handle heavy gaming and multitasking loads while keeping acoustic output low. High static pressure fans on the 240 mm radiator push air through dense fins for stronger cooling with less noise. PWM control lets the motherboard adjust fan speed precisely for the current thermal demand. No separate controller is required, so power draw stays limited to standard motherboard headers.

Build connectors and mounting

The single-frame fan design reduces screw count and cable clutter for a cleaner interior and faster assembly. Tool-free mounting brackets for both Intel and AMD sockets simplify installation on supported platforms. Flexible tubing eases routing inside the case. A 5V ARGB header on the motherboard drives lighting on the pump and fans through the board vendor's software. The package includes all necessary brackets for the listed sockets.

Highlights

  • Powerful 3100 RPM pump keeps CPU cool under heavy loads
  • Direct motherboard connection eliminates extra controllers for simpler cable management
  • Single-frame fan design reduces screws and cables for a cleaner build
  • Tool-free brackets with pre-applied paste make installation fast and frustration-free
  • 5V ARGB lighting syncs through motherboard software for easy personalisation

Specifications

BrandNZXT
Part NumberRL-KR24C-B1
TypeLiquid Cooling System
Fan Size120 mm
ColorBlack
Shipping weight2.00 kg
Package size330 × 226 × 140 mm

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I install the single-frame fan and radiator, and what step is often missed?

Mount the 240 mm radiator, attach the single-frame fan using the reduced screw count, fit the tool-free brackets for Intel LGA 1851/1700/1200/115X or AMD AM5/AM4, then plug the pump and fan cables into the motherboard headers; the step often missed is connecting the 5V ARGB header so the pump and fan lighting actually work.

What maintenance or replacement will the Kraken Core 240 RGB need later?

The sealed loop requires no coolant top-ups; plan to clean dust from the 120 mm fan blades and radiator fins every 6–12 months and replace the pre-applied thermal paste if you ever reseat the CPU block.

What limit appears first under sustained heavy load?

The 3100 RPM pump speed sets the maximum coolant flow, so once the 240 mm radiator and single-frame fans reach their thermal saturation point the pump cannot move heat away any faster.

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