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DeepCool LS720S Zero Dark specifications and in-depth review

DeepCool LS720S Zero Dark

Manufacturer: DeepCool

The DeepCool LS720S Zero Dark is an AIO liquid CPU cooler built around a 360mm radiator and a three-fan configuration, targeting users who want effective thermal management without RGB lighting. The cooler supports a broad range of CPU sockets, covering Intel LGA 1150 through LGA 1851 as well as AMD AM4 and AM5, and ships with thermal paste included. Its understated aesthetic — no display, no lighting — reflects a focus on clean, no-frills builds.

The three fans spin up to 2250 rpm and deliver a combined maximum airflow of 85.85 CFM using fluid dynamic bearings, keeping noise between 19 dB at minimum and 32.9 dB at peak. The pump reaches up to 3100 rpm, and the water block measures 73 x 85 x 55 mm. The radiator spans 402 x 120 mm at 27 mm thick, and the full assembly weighs 1,659 g. A one-year warranty is included.

Pros
  • Broad CPU socket compatibility covers both Intel LGA 1150 through 1851 and AMD AM4 and AM5, making it usable across a wide range of current and recent platforms
  • Fluid dynamic bearings on the fans contribute to smoother operation and longer bearing lifespan compared to sleeve bearing alternatives
  • Thermal paste is included in the box, so the cooler is ready to install without requiring a separate purchase
  • The three-fan 360mm radiator configuration allows for substantial heat dissipation surface area
  • Minimum noise output of 19 dB keeps the cooler relatively quiet during low-load operation
  • The absence of RGB lighting suits users who prefer a clean, understated build aesthetic
Cons
  • The one-year warranty period is shorter than what is commonly offered for AIO liquid coolers in this category
  • At 1,659 g, the total assembly weight requires a sturdy case and mounting solution to avoid stress on the motherboard
  • Maximum noise of 32.9 dB at full fan speed may be noticeable in quieter environments
  • No built-in display means there is no on-unit readout for pump speed, temperature, or other system data
Who is this for?

The DeepCool LS720S Zero Dark is a good fit for PC builders who want effective thermal management without any lighting or visual embellishments. Its 360mm radiator with three fans provides ample heat dissipation capacity for demanding workloads, and the broad socket compatibility spanning Intel LGA 1150–1851 and AMD AM4/AM5 means it can be used across a wide variety of current and recent system builds without adapter concerns. Users who value a quiet idle experience will also appreciate the 19 dB minimum noise floor, and the inclusion of thermal paste makes it a straightforward, ready-to-install solution.

Who is this NOT for?

Users working with compact or small-form-factor cases may find the 360mm radiator and 1,659 g total weight incompatible with their chassis constraints, as not all cases can accommodate a radiator of this size or manage the mounting load. Those who want real-time system feedback at a glance will be disappointed by the absence of a built-in display on the pump head. Additionally, builders who require a longer warranty for peace of mind on a liquid cooling component may find the one-year coverage period insufficient for their expectations.

Cooling:

Cooling type AIO liquid
Max fan RPM 2250 rpm
Max pump RPM 3100 rpm
Max airflow 85.85 CFM
Number of fans 3

The LS720S Zero Dark uses an AIO liquid cooling setup with three fans that spin up to 2250 rpm, delivering a maximum combined airflow of 85.85 CFM. The pump reaches up to 3100 rpm, supporting consistent coolant circulation through the system.

Dimensions:

Heatsink/water block height 55 mm
Heatsink/water block width 73 mm
Heatsink/water block depth 85 mm
Radiator size 360 mm
Radiator height 27 mm
Radiator length 402 mm
Radiator width 120 mm

The water block measures 73 mm wide, 85 mm deep, and 55 mm tall, keeping its footprint compact over the CPU socket. The 360mm radiator spans 402 mm in length and 120 mm in width, with a thickness of 27 mm, giving it a standard triple-fan form factor for case mounting.

General info:

CPU socket LGA 1851, LGA 1700, LGA 1200, LGA 1151, LGA 1150, LGA 1155, AM4, AM5
Audible noise (min) 19 dB
Audible noise (max) 32.9 dB
weight 1659 g
warranty period 1 years

The cooler is compatible with a wide range of CPU sockets, including Intel LGA 1150, 1151, 1155, 1200, 1700, and 1851 as well as AMD AM4 and AM5, covering most current and recent mainstream platforms. Audible noise ranges from 19 dB at minimum fan speed to 32.9 dB at full load, and the full assembly weighs 1,659 g. A one-year warranty is included.

Features:

Fan bearings Fluid dynamic bearings
has RGB lighting ✕
Thermal paste Included
Has a display ✕

The fans use fluid dynamic bearings for smoother and quieter rotation over the cooler's lifespan, and thermal paste is included in the box, removing the need for a separate purchase. The cooler has no RGB lighting and no built-in display, keeping its appearance clean and minimal.

Final Verdict

The DeepCool LS720S Zero Dark is a straightforward AIO liquid cooler that prioritizes function over aesthetics, and its specifications back that positioning clearly. The 360mm radiator paired with three fluid dynamic bearing fans delivers solid airflow capacity and a reasonably quiet idle noise floor, while wide socket support across both Intel and AMD platforms makes it a versatile option for a range of builds. Its limitations — a one-year warranty, no display, and a sizeable physical footprint — mean it works best in full-sized cases where chassis space is not a constraint and long-term coverage is not a primary concern. For users who want capable liquid cooling without lighting or added complexity, the LS720S Zero Dark is a focused and practical choice.