Gamers demand desktops that deliver robust processing for demanding games, high FPS, strong GPU output, and vivid visuals. However, these performance levels generate significant heat. Pursuing high FPS and overclocking pushes CPUs, RAM, and GPUs to their limits, causing overheating. Without adequate cooling,
desktop components can fail, fans may run noisily, and overall performance will drop.
Liquid cooling has become the preferred solution for elite gaming PC cooling. Its integrated pump, leak-resistant tubing, water block, and radiator work together to provide superior cooling compared to standard fans.
Our OMEN desktop line, including the OMEN 25L, 30L, 40L, and 45L, supports official 240mm and 360mm liquid cooling options, balancing performance with reliability, visual appeal with superior thermal design, and extended gameplay with durability.
What is Liquid Cooling for Gaming PCs?
A liquid cooling system uses coolant to regulate CPU temperature. The system includes a water block, pump, radiator, and insulated tubing.
Key Components:
Water Block: Contains specialized liquid coolant that sits on the CPU and absorbs heat as it performs tasks.
Pump: The heart of the system, ensuring coolant flows between the water block and the radiator.
Radiator: Cools the heated liquid from the water block using fans. Once cooled, the liquid recirculates to continue the loop.
Insulated Tubing: Tubes carry coolant through the system – radiator, water block, and pump. They feature insulation to maintain temperature and leak-proof construction to protect
system components.
Additional Components:
Thermal Paste: Applied between the CPU and cooler, improving heat transfer between the coolant and CPU.
Unlike traditional cooling systems that rely solely on fans, liquid cooling features a sophisticated network for enhanced OMEN desktop thermal management, quieter operation, and excellent support for AAA gaming and overclocking.
Core Benefits of Liquid Cooling
Thermal Performance
Water and most coolants have higher heat capacity than air. While running liquid-filled tubes through your PC may seem risky, leak-proof and durable tubes protect crucial components. The result is optimized thermal performance from a network that efficiently cools your CPU.
Better Acoustics
Liquid coolers use coolant to absorb CPU heat, transferring the heated liquid to the radiator, which then dissipates heat into the surrounding air through metal fins. This process is efficient and significantly quieter than traditional air cooling.
System Stability
Our proprietary liquid coolers enhance CPU thermal management. Meanwhile, our GPUs are cooled with fans. Combined with complementary components like the OMEN 120mm aRGB chassis fans, your PC enjoys enhanced
case airflow, protecting all components within the case.
Optimized Overclocking
Overclocking increases your CPU's frequency multiplier – essentially making your CPU work harder with demanding software and games. While overclocking increases CPU performance, it can cause overheating. Liquid cooling protects your components through enhanced thermal management during demanding gameplay.
Space Efficiency
Features like daisy-chaining, the tubular network, and the compact arrangement of liquid cooling components make liquid cooling more space-efficient than air cooling.
Why Liquid Cooling Matters Specifically for Gaming
FPS Stability
Resource-demanding gaming requires consistent high FPS (Frames Per Second). Higher FPS generates more heat, but liquid cooling protects hardware components from overheating and damage, regardless of gameplay duration.
Overclocking Headroom
During intense gameplay, your desktop may need to overclock to support graphics demands. Liquid cooling balances performance with efficiency, providing thermal headroom for resource-demanding gameplay and productivity.
Longer Hardware Lifespan
High-quality liquid coolers typically last longer because their components are rigorously tested for thermal management efficiency under intense gaming and multitasking conditions. This ensures durability, leak-proof design, and longevity. Quality liquid cooling systems protect all
computer components during gaming.
OMEN Desktop Compatibility Overview
OMEN desktops support various cooling models, depending on chassis size and performance needs.
HP OMEN 25L Desktop – Compact but Powerful
The
HP OMEN 25L desktop supports smaller all-in-one cooling systems, including 120mm and 240mm liquid coolers, due to its compact chassis. All-in-one cooling systems are plug-and-play – the pump, water block, radiator, and tubing are pre-assembled. While AIO systems may have limited size and design options compared to custom builds, they remain reliable for standard gaming.
HP OMEN 30L / 40L Desktops – High-Performance Systems for Pros
The
HP OMEN 30L and
OMEN 40L desktops feature larger chassis than the OMEN 25L and support up to 240mm liquid coolers. They offer
enhanced airflow and thermal management and can accommodate additional fans. However, they lack sufficient clearance for 360mm radiators.
HP OMEN 45L Desktop – Engineered for Extremes
The
HP OMEN 45L desktop supports up to 360mm liquid cooling, providing high-end thermal management. It features the innovative Cryo Chamber Design – an architecture that positions the cooling compartment above the main chassis.
OMEN 45L desktops lead the industry in thermal headroom and are praised for their clearance, compatibility with complementary fans, ease of installation, and reduced noise during intense gameplay. The OMEN 45L delivers exceptional productivity, raw power, efficiency, and quiet operation – excellent features for AAA gamers and multitaskers.
Key Factors That Determine Compatibility
Chassis Size and Clearance
Larger chassis dimensions accommodate bigger liquid cooling systems. The HP OMEN 30L and 40L support up to 240mm liquid coolers, while the 45L accommodates up to 360mm radiators. Larger chassis also provide extra support for complementary fans, optimizing thermal management and cooling efficiency.
Airflow Design
A chassis with optimized airflow paths dissipates heat more efficiently. Beyond chassis size, proper thermal architecture ensures that heated liquid and air are quickly replaced with cooler ambient air.
Radiator Mounting Support (Top/Front)
Radiator installation options include top, front, or both. Each option offers different internal layouts and cooling performance. Some chassis support 240mm radiators mounted on the front, while others support top-mounted 360mm radiators – the latter typically offers enhanced thermal management.
Official OMEN Liquid Cooling Solutions
OMEN's modular coolers are scalable solutions tailored to HP OMEN desktop chassis. Each modular cooler, ranging from 240mm to 360mm, is designed for premium thermal management and impressive aesthetics. Whether building a powerhouse gaming station or a compact rig, these coolers sustain high-intensity processing, efficiently removing heat and ensuring components operate optimally during high-resource demands and extended gameplay.
OMEN Modular 240mm LCD Liquid Cooling System aRGB – Smart Cooling Meets Bold Design
The OMEN Modular 240mm LCD Liquid Cooling System is designed for the OMEN 25L, 30L, and 40L desktops, featuring:
- 240mm aluminum radiator: A high-density radiator that efficiently dissipates heat absorbed by the coolant
- 7th gen pump by Asetek: Circulates liquid through insulated tubes
- 2.1-inch IPS LCD pump cap: Displays logos, stats, and custom animations
- aRGB Gen 2 Lighting: Featured on the pump and dual 120mm fans, creating visually stunning lighting effects through OMEN Gaming Hub
- Supports up to 16 fans via daisy-chained connections, optimizing space with fewer cables
The cooler is compatible with major CPUs, including AMD and Intel processors, making it suitable for mid- to advanced-level gaming needs.
OMEN Modular 360mm aRGB Liquid Cooling System – Robust Cooling for Top-Tier Desktops
- 360mm radiator: Designed specifically for the 45L desktop, offering superior cooling efficiency
- Three 120mm performance fans: Provide enhanced cooling throughout the desktop
- Asetek's 7th Gen Pump: Ensures efficient liquid circulation from radiator to cooler and back
- EPDM tubing: Insulated and leak-proof for extended use, suitable for frequent gamers who demand reliability during overclocking and high-FPS gaming
- Lighting customization: OMEN Gaming Hub enables stunning visual effects with 10 LEDs per fan and 16 LEDs in the pump cap
This cooler is ideal for overclockers and AAA gamers who demand peak performance and quiet thermal management.
Complementary Cooling Components
Picture this: you're in an intense gaming session when suddenly your system lags at a critical moment. This frustrating scenario often results from thermal throttling. Modern gaming demands PCs with raw power, but that power requires proper cooling.
High-performance gaming can trigger overclocking. Without proper thermal management, high temperatures can damage crucial components. Modular liquid coolers, like the HP OMEN 240mm and 360mm, cool the CPU. The GPU has its own dedicated cooling system, and other components like RAM rely on case airflow. Additional fans can further enhance case airflow and maintain system balance.
With complementary systems like the HP OMEN 120mm aRGB fans and the HP OMEN modular 120mm fan, users achieve quieter operation, enhanced thermal efficiency, and synchronized light effects.
OMEN 120mm aRGB Fans (25mm thickness) – Stability, Ambience, Compatibility
- Annular ring design, 25mm thick
- Gen 2 aRGB lighting for customized visual effects via OMEN Gaming Hub
- Delivers quieter cooling with style
- Can be paired with 240mm and 360mm liquid coolers for radiator installation
- Compatible with all OMEN desktops
OMEN Modular 120mm Fan Triple Pack (28mm thickness) – Performance Meets Efficiency
- 28mm thickness
- 74CFM airflow at 2400 RPM – delivers robust cooling for overclockers and AAA gamers who want quieter and more efficient rigs
- Functions via the OMEN Modular Hub and supports up to 16 fans through daisy-chain cables
- Clean, efficient, and complementary fan technology for optimal GPU and chassis airflow management during high-FPS gaming sessions and multitasking
Benefits of Using Official HP-Certified Cooling
Warranty Protection
All HP-certified cooling components are backed by HP's limited warranty. This protection is crucial for users who demand high-performance or overclock their systems. HP-certified cooling products are reliable and durable, ensuring users maintain warranty coverage that could otherwise be voided by third-party installations.
Seamless Software Integration
HP OMEN liquid coolers integrate with OMEN Gaming Hub, allowing users to customize lighting, monitor temperatures, and set fan curves from a single location. This plug-and-play solution eliminates the need for third-party software.
Tested Reliability
Each component of HP OMEN cooling systems, from pump to radiator, is rigorously tested for durability, performance, and longevity. The pump and entire architecture are pre-tested for thermal performance. The tubes are leak-proof, and the entire system is engineered to work seamlessly with OMEN desktops.
Professional Support
HP offers easy access to upgrades, maintenance, and replacement through reliable and professional customer support.
Frequently Asked Questions About OMEN Desktop Liquid Cooling
Which OMEN desktop PC supports 360mm liquid cooling?
HP OMEN desktops support two official liquid cooling sizes: 240mm and 360mm. The OMEN 25L, 30L, and 40L desktops are compatible with 240mm liquid coolers, while the OMEN 45L is the only model designed to support 360mm cooling systems.
Do I need extra fans with a liquid cooler?
Yes, typically for balanced airflow and enhanced thermal management. OMEN desktop liquid coolers manage CPU cooling, but the GPU, RAM, and chassis benefit from additional fans.
Does upgrading to liquid cooling affect my HP warranty?
Upgrading to liquid cooling is supported if you purchase official HP/OMEN components. Using third-party or aftermarket components can void your warranty.
How hard is it to install an OMEN liquid cooler?
Pre-applied thermal paste and modular design simplify installation. Professional support is also available if needed.
Is liquid cooling worth it?
Yes, if you value performance, efficiency, and hardware longevity.
Conclusion
Liquid cooling keeps OMEN desktops cool, stable, and quiet during resource-demanding gameplay and multitasking. The
OMEN 25L, 30L, and
40L desktops support liquid coolers up to 240mm, while the
OMEN 45L supports coolers up to 360mm. Official OMEN cooling systems can be enhanced with complementary components like 120mm aRGB fans and the OMEN Modular 120mm Triple Pack, which help maintain stable cooling for non-CPU components like the GPU and RAM.
To determine the optimal cooling option for your OMEN desktop, confirm your model or contact HP customer support. All official cooling options are backed by warranties, are reliable, customizable, and pre-assembled – making installation seamless.
Ready to
upgrade your cooling system and unlock stable, high-performance gaming? Check your desktop model or reach out to our support team.
About the Author
Oluwakemi is a B2B tech writer who helps brands simplify complexity. From product descriptions and reviews to how-to guides, case studies, and comparison pieces, she crafts content that connects with real decision-makers.