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The ASUS ProArt LC 420 liquid cooler can substantially lower your PC’s thermals, and is currently listed at $50 less on Amazon.
The ASUS ProArt LC 420 liquid cooler is designed to provide high thermal efficiency with professional looks. It is an excellent AIO product that integrates high-quality cooling components with intelligent design to achieve stability and low noise.
Cooling modern CPUs is getting tougher due to the increase in power density. As a creator and gamer, a liquid cooler is essential for maintaining performance as well as hardware life. The ProArt line emphasizes a subtle design with a professional flair, unlike some of its RGB-intensive counterparts, but still provides the cooling performance of the best of them.
The ASUS ProArt LC 420 AIO Liquid Cooler is available on Amazon for $309.99 (down from $359.99). This is a $50 discount on a cooler that delivers a 420 mm radiator, Noctua fans, and a 6-year warranty for workstations and gaming systems.
Note: The listed deal is accurate as of August 26, 2025
Technical Specifications
Let us first go over the core specifications of the ASUS ProArt LC 420 AIO liquid cooler:
| Specification | Details |
|---|---|
| Model | ASUS ProArt LC 420 AIO Liquid Cooler |
| Radiator Size | 420 mm, aluminum |
| Fans | 3 × Noctua NF-A14 IndustrialPPC-2000 PWM 140 mm |
| Pump | Three-phase motor, ProArt illuminated system status meter |
| Tubing | 450 mm sleeved, flexible |
| Compatibility | Intel LGA 1851, 1700, 1200, 115x; AMD AM5, AM4 |
| Warranty | 6 years |
| Design | Minimalist ProArt aesthetic, professional-grade build |
Is It Worth Buying the ASUS ProArt LC 420 AIO Liquid Cooler?
The ASUS ProArt LC 420 is a worthwhile purchase when you need serious cooling performance, low noise, and professional style for a workstation or gaming rig.
This cooler stands out for its effectiveness and functionality. The 420 mm aluminum radiator and three Noctua NF-A14 IndustrialPPC fans offer outstanding thermal capabilities and can cool high-end CPUs under heavy sustained loads. Unlike other RGB coolers, the ProArt LC 420 is made with discreet design elements and a professional matte finish, which seamlessly integrates with creator systems.
The pump housing has an illuminated system status meter. This meter is not just for show; it provides an instant overview of the cooler’s operation, making it easier to monitor performance. The pump itself employs a more efficient three-phase motor with less vibration. The 450 mm sleeved tubing is flexible enough to install even in large cases.
Another strong feature is its durability. The 6-year warranty and military-grade reliability ensure long-term builds. Other coolers may compete in specs, but few have the same sleek design and high-end hardware options as ProArt, such as the included Noctua fans. The result is a quiet cooler that can operate under heavy loads.
It is not the most affordable option at $309.99. Smaller 240 mm or 360 mm AIOs are cheaper, and users on a tight budget might not need this much capacity. However, for users with high-end CPUs or those building professional systems where visual aesthetics and thermal performance are important, the ProArt LC 420 is one of the best options to choose.
Pro Tip
If possible, mount the radiator on the top of your case. This enhances airflow, minimizes the possibility of air bubbles, and makes the cooler quieter.
ASUS ProArt LC 420 AIO Liquid Cooler Deal Overview
The ASUS ProArt LC 420 AIO Liquid Cooler is discounted to $309.99 by Amazon, down by $50. It has a 420 mm radiator, Noctua premium fans, and a minimalist ProArt design that combines performance and style.
The deal is most attractive to professionals, creators, and gamers who use high-power CPUs and need a cooling system that is both effective and quietly efficient. Smaller coolers may be more suitable for budget builds, but for high-end systems that require reliability and long-term performance, this offer is worth considering.
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