DeepCool LS520 SE 240mm Liquid CPU Cooler - Dual-Chamber Pump

In this review the DeepCool LS520 SE 240mm AIO is presented as a performance-oriented liquid cooler best suited for gamers and creators who need sustained thermal headroom. The single biggest reason to consider it is its redesigned 4th generation dual-chamber pump that directs cool liquid across a thick copper cold plate before the motor chamber, improving heat transfer and reducing heat dumped back into the loop. The result is reliable cooling up to the advertised 280w TDP while offering an infinity mirror block and ARGB lighting for builds where looks matter.

Key Features

• 4th Gen Dual-Chamber Pump: The pump feeds coolant into a cold plate chamber first so the CPU receives cooling before the motor is cooled, which reduces loop heat and improves sustained performance.
• High rpm Motor and Copper Plate: A three-phase brushless motor capable of up to 3100RPM paired with a thick pure copper cold plate maximizes conductive and convective heat transfer for heavy loads.
• 280w TDP Capacity: The combination of the pump, a 13-row high-density radiator and two strong FE120 fans delivers efficient dissipation suitable for overclocking gaming systems.
• Anti-Leak Tech: The radiator pressure-relief device vents inner pressure caused by high temperature to reduce the risk of leaks during long-term use.
• ARGB Infinity Mirror Block: The water block uses an infinity mirror RGB design and pairs with FE120 5v-3pin ARGB fans to create a visually striking lighting effect for RGB-focused builds.
• Low Noise Option: FE120 fans run up to 2250RPM at full speed with a claimed noise under 32.9 dB(A) and include a low-speed adaptor to drop to 1600RPM for quieter operation.

Who It's For

The LS520 SE is aimed at desktop builders who want above-average cooling for high-TDP CPUs and those who value RGB presentation alongside performance. It suits gamers who overclock or run sustained CPU loads and visual creators who need thermal stability during long renders.

Users who need a smaller footprint cooler or have strictly passive/no-RGB requirements should look elsewhere, as this 240mm radiator and ARGB-focused aesthetic are geared toward mid-tower builds that accommodate dual 120mm fans and visible lighting.

Pros & Cons

Pros

• Strong sustained cooling thanks to the dual-chamber pump and thick copper cold plate.
• Good airflow from FE120 fans with a low-noise adaptor for quieter operation when preferred.
• Anti-leak pressure-relief design adds a layer of long-term reliability for sealed AIOs.
• Attractive infinity mirror block and ARGB lighting that integrate with motherboard sync systems.

Cons

• Larger 240mm radiator requires compatible case space and may not fit compact systems.
• Full-speed fan noise approaches mid-30 dB(A) under load, so silence-focused builds will prefer lower speed fans.

Specifications

Radiator Size	282 x 120 x 27 mm
Radiator Fins	13 rows, ~24 fins per in
Fans	Two DeepCool FE120 5v-3pin ARGB 120mm fans, up to 2250RPM (low-speed adaptor 1600RPM)
Pump	4th gen dual-chamber pump, three-phase brushless motor up to 3100RPM
Cooling Capacity	Rated 280w TDP
Compatibility	AMD AM4/AM5, Intel LGA 1700/1200/1151/1150/1155
Special Features	Anti-Leak pressure-relief device, ARGB infinity mirror block

Our Verdict

The DeepCool LS520 SE is a balanced choice for builders who want dependable 240mm AIO performance with eye-catching ARGB lighting. Its 4th generation dual-chamber pump and solid copper cold plate deliver sustained cooling for mid- to high-TDP CPUs while the anti-leak feature adds reassurance for long-term use, making it good value for gamers and creators who need both thermal headroom and visual flair.

Frequently Asked Questions

Is the LS520 SE compatible with modern sockets?
Yes. It supports AMD AM4 and AM5 and Intel LGA 1700, 1200, 1151, 1150, and 1155 sockets.

How loud are the included fans under load?
The FE120 fans can reach up to 2250RPM at full speed with noise under 32.9 dB(A); a low-speed adaptor reduces speed to 1600RPM for quieter operation.

What safety features reduce the risk of leaks?
The radiator includes DeepCool's Anti-Leak pressure-relief device that vents inner air pressure caused by high temperatures to help prevent potential leaks over long-term use.