DeepCool LS720S ZERO DARK 360mm AIO Liquid CPU Cooler - Stealth 300W

In this review the DeepCool LS720S ZERO DARK 360mm AIO is evaluated as a premium all-black liquid CPU cooler aimed at gamers and creative professionals who want strong thermal performance without flashy RGB. The single biggest reason to consider it is the combination of a 300w TDP rated 4th generation pump and a full 360mm radiator that together handle overclocked CPUs while keeping a restrained, minimal aesthetic. The review examines build quality, installed noise and airflow, compatibility, and the practical benefits of DeepCool's anti-leak technology.

Key Features

• All-black finish: A full black luster across pump, tubing and radiator creates a uniform look that suits stealth or professional builds without bright lighting.
• 300w TDP cooling: The 4th generation pump with microchannel design and copper cold plate is tuned to support CPUs up to 300w TDP, which helps during sustained gaming or moderate overclocking.
• High-speed pump: A 3100RPM motor in the dual-chamber pump improves coolant flow for efficient heat transfer and sustained performance under load.
• Efficient fans: Three FE120 120mm PWM fans spin to 2250RPM with 85CFM and 3.27mmAq of static pressure, providing strong radiator airflow while vibration pads reduce perceived noise.
• Anti-leak technology: An integrated pressure-relief device in the radiator vents excess inner pressure to reduce the risk of leakage over long-term operation.
• Rotatable pump cap: The aluminum block cap can be rotated for correct orientation during installation, simplifying alignment in tight builds.

Who It's For

The LS720S ZERO DARK is best for PC builders who prioritize a clean, minimalist aesthetic and need a reliable 360mm AIO for high TDP CPUs used in gaming, streaming or content creation. It is suited to systems where radiator space for a 360mm mount is available and users want quieter operation thanks to noise-damping fan corners and tuned fan profiles.

Those who should look elsewhere include users constrained to smaller cases that cannot accept a 360mm radiator, or extreme overclockers seeking liquid custom loops; this AIO is a strong all-in-one solution but not a substitute for a custom multi-radiator water loop.

Pros & Cons

Pros

• Uniform all-black styling gives a sophisticated, low-profile look in most builds.
• Solid cooling capability with a 300w TDP rating and a 4th gen 3100RPM pump for sustained loads.
• Three high-airflow 120mm fans with anti-vibration pads balance cooling and noise control.
• Anti-leak patent technology adds peace of mind for long-term use.

Cons

• Requires a case that supports a 360mm radiator; not suitable for compact small-form-factor systems.
• Fans can reach higher RPM under full load, which may still be noticeable in very quiet workspaces despite vibration damping.

Specifications

Radiator	360mm
Pump	4th Gen dual-chamber, 3100RPM
Cooling capacity	300w TDP
Fans	3 x FE120 120mm PWM, up to 2250RPM, 85CFM
Noise control	Corner vibration damping pads, under 32.9dB(A) at full load
Compatibility	LGA 1700/1200/1151/1150/1155 and AM5/AM4
Special feature	Anti-leak pressure-relief device and rotatable aluminum pump cap

Our Verdict

The DeepCool LS720S ZERO DARK 360mm AIO is a well-considered choice for builders who want powerful cooling in a minimalist all-black package. Its 300w TDP support, high-performance pump and three strong 120mm fans make it a reliable performer for gaming and productivity rigs, while the anti-leak tech and rotatable cap add practical installation and longevity benefits. It represents good value when a 360mm AIO fits the case and RGB is not desired.

Frequently Asked Questions

Will this fit a typical mid-tower case?
It fits only in cases with a 360mm radiator mounting location, so confirm top or front 360mm clearance before purchase.

Is the pump orientation adjustable?
Yes, the aluminum block cap is rotatable to help align the logo or tubing during installation.

Does it protect against leaks?
The unit includes DeepCool's anti-leak pressure-relief device designed to vent inner pressure and reduce leak risk over time.