In 2026, the demand for compact and efficient cooling solutions continues to grow, especially among enthusiasts building small form factor PCs. 120mm AIO (All-In-One) coolers have become popular due to their size, performance, and ease of installation. This article explores the top 10 120mm AIO coolers available in 2026, highlighting their features, performance, and suitability for various builds.

What to Look for in a 120mm AIO Cooler

When choosing a 120mm AIO cooler, consider factors such as cooling performance, noise levels, build quality, aesthetics, and compatibility. A good cooler should efficiently dissipate heat, operate quietly, and fit seamlessly into your small build without compromising on style or functionality.

Top 10 120mm AIO Coolers in 2026

  • Cooler Master MasterLiquid ML240L RGB V2
  • NZXT Kraken M22
  • Corsair iCUE H60i RGB Elite
  • ASUS ROG RYUJIN 120
  • Deepcool Castle 240EX
  • be quiet! Pure Loop 120mm
  • Thermaltake Water 3.0 Solo
  • Fractal Design Celsius S24
  • Lian Li Galahad 120 RGB
  • Phanteks Glacier One 120

1. Cooler Master MasterLiquid ML240L RGB V2

This cooler offers excellent cooling performance with a sleek RGB design. Its low-profile radiator makes it ideal for small builds, providing efficient heat dissipation while maintaining a compact footprint. The ML240L V2 is praised for its quiet operation and easy installation.

2. NZXT Kraken M22

The NZXT Kraken M22 features a vibrant RGB display and a compact design, perfect for small cases. Its innovative pump design ensures reliable performance, and the software controls allow for customization of lighting and fan speeds.

3. Corsair iCUE H60i RGB Elite

Known for its excellent cooling capacity and vibrant RGB lighting, the Corsair iCUE H60i RGB Elite is a top choice for small builds. Its quiet operation and easy setup make it a favorite among gamers and enthusiasts.

4. ASUS ROG RYUJIN 120

The ASUS ROG RYUJIN 120 combines high performance with striking aesthetics. Its addressable RGB lighting and robust cooling capabilities make it suitable for overclocked small builds.

5. Deepcool Castle 240EX

Despite its name, the Castle 240EX is compact enough for small builds, offering excellent thermal performance. Its customizable RGB lighting and durable construction add to its appeal.

6. be quiet! Pure Loop 120mm

Designed for silent operation, the Pure Loop 120mm provides reliable cooling with minimal noise. Its simple design and high-quality pump make it a great choice for quiet small builds.

7. Thermaltake Water 3.0 Solo

The Water 3.0 Solo offers a straightforward installation process and solid cooling performance. Its compact size fits well in tight spaces, making it suitable for small form factor PCs.

8. Fractal Design Celsius S24

The Celsius S24 combines sleek aesthetics with effective cooling. Its slim radiator and customizable RGB lighting make it an attractive option for small builds with style.

9. Lian Li Galahad 120 RGB

This cooler features a stunning RGB display and a compact design that fits well in small cases. Its high-quality construction and performance make it a popular choice among enthusiasts.

10. Phanteks Glacier One 120

The Glacier One 120 offers excellent thermal performance with a sleek look. Its customizable RGB lighting and quiet operation make it a versatile choice for small builds.