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General Characteristics of a 120mm AIO
Form Factor: 120mm AIO liquid coolers are compact and feature a single 120mm fan and a radiator of a similar size.

Purpose: They are typically entry-level liquid coolers, often used in smaller cases where larger coolers won’t fit, or for cooling CPUs with a lower to moderate thermal design power (TDP).

Cooling Performance: A 120mm AIO generally offers cooling performance comparable to a high-end single-tower air cooler. While it’s an improvement over a stock cooler, it is not recommended for overclocking or cooling high-end CPUs (like Intel’s i7/i9 or AMD’s Ryzen 7/9) as they may struggle to dissipate the heat efficiently.

Aesthetics: Most modern AIOs, including the Great Wall 120, feature RGB or ARGB lighting on the fan and/or pump head, which can be a key selling point for those prioritizing a custom look for their PC.

Potential Specifications (Based on typical 120mm AIOs and limited product info)
Radiator Size: 120mm (157 x 120 x 27mm is a common size).

Fan: 1 x 120mm PWM (Pulse-Width Modulation) fan.

Fan Speed: Typically in a range like 800 – 1800 RPM.

Noise Level: Fan noise can range, but a value like ≤ 24.8 dB(A) is sometimes quoted for quieter operation.

Pump Speed: Usually around 2200 RPM ± 10%.

Socket Compatibility: Likely supports a wide range of common Intel and AMD sockets, such as Intel LGA 115X/1200/1700 and AMD AM4/AM5.

Lighting: Often features Addressable RGB (ARGB) on the fan and pump head, which can be controlled via motherboard software.

User Considerations
Performance vs. Price: A 120mm AIO might be priced higher than an equivalent air cooler, but its compact design might be necessary for certain small form factor builds.

Noise: While AIOs are generally quieter than stock coolers, the pump and fan can generate noise, especially at high speeds.

Reliability: Like any liquid-based system, there is a small risk of leaks, although this is rare with modern, sealed AIO units.