This article covers Thermalright Frozen Prism 240 Black ARGB AIO 水冷クーラー.

Overview

The Thermalright Frozen Prism 240 Black ARGB is a 240mm all-in-one liquid CPU cooler from the well-known Taiwanese brand Thermalright. It features a black-finished radiator and two 120mm PWM fans, balancing cooling performance and noise levels effectively. At the heart of this cooler is the fourth-generation pump unit (Frozen V1.0) with a magnetic detachable top cover and 5V ARGB lighting. The pump can be synchronized with your motherboard's 5V 3-pin header for customizable lighting effects. Cooling is handled by a flat copper base water block paired with a 240mm aluminum fin cold plate. The polymer-braided tubing resists evaporation and extends the unit's lifespan. The fans spin up to 1850 RPM, delivering 70.4 CFM of airflow.

Connectivity & Compatibility

The Frozen Prism 240 supports a wide range of sockets: Intel LGA115X/1200/1700/2011/2011-V3/2066 and AMD AM4/AM5. All necessary mounting hardware is included, so it works out of the box with modern Ryzen 7000 and 13th-gen Core processors. Both the pump and fans feature 5V ARGB connectors that plug into your motherboard's 3-pin ARGB header for synchronized lighting. PWM control allows automatic fan speed adjustment based on CPU load.

Product Info

The Thermalright Frozen Prism 240 Black ARGB is a mid-range AIO liquid cooler available through and other retailers. Its street price hovers around ¥7,700, making it an excellent value for a 240mm liquid cooler. Warranty is provided by Thermalright, typically 2-3 years. The package includes Intel and AMD mounting kits, thermal paste, and all necessary cables. Market positioning: this cooler is ideal for entry-to-mid-range CPUs like Ryzen 5 or Core i5. It can handle higher-end chips like Ryzen 9 or Core i9 at stock settings, but for heavy overclocking, a 360mm radiator would be more appropriate.

Best Use Cases

Silent PC builders: 240mm AIOs are generally quieter than high-end air coolers. The Frozen Prism 240's PWM fans and pump design keep noise low during idle and light loads. RGB enthusiasts: The pump top and fans include ARGB LEDs that sync with your motherboard's 5V header, allowing you to create a cohesive lighting setup. * Budget-conscious first-time water cooling users: At around ¥7,700, this is one of the most affordable 240mm AIOs on the market. It offers solid cooling performance without breaking the bank. If you plan to overclock a high-end CPU heavily, or if your case doesn't support a 240mm radiator, consider a larger AIO or a high-end air cooler instead. ## Alternatives
Direct competitors in the same price bracket include the Arctic Liquid Freezer III 240 and Cooler Master MasterLiquid ML240L series. The Arctic unit has a thicker 38mm radiator for slightly better cooling, but may cause clearance issues in some cases. Cooler Master's offering features a distinctive pump design and RGB control, but typically costs a bit more. The Frozen Prism 240 stands out for its unbeatable price-to-performance ratio. It delivers reliable cooling for mid-range CPUs, quiet operation, and ARGB support at a price that undercuts most rivals.

Things to Consider

Before purchasing, verify that your case supports a 240mm radiator. Most mid-tower cases can mount one on the top or front, but compact or Mini-ITX cases may not. Check clearance around the pump block: while it's a standard size, tall VRM heatsinks or RAM modules could interfere. Measure your motherboard layout if you're unsure. ARGB synchronization requires a 5V 3-pin header on your motherboard. Older or entry-level boards may lack this, so confirm compatibility beforehand. Finally, remember that AIO coolers have a finite pump lifespan — Thermalright rates this unit at approximately 40,000 hours. Plan for replacement after 5-6 years of continuous use.