Koolance
Koolance EXT-440CU Cooling System, Copper
Best external cooling solution for custom PC enthusiasts building high-performance rigs.
Experience superior PC cooling with the Koolance EXT-440CU, a compact external liquid cooling system. It features an integrated PMP-300 pump and a high-performance copper core heat exchanger, complemented by a powerful 120mm fan delivering 108 CFM. Enjoy precise control with manual pump speed adjustment and 10-level automatic or manual fan speed settings. The system includes integrated blue reservoir LED lighting and offers three independent temperature sensors with adjustable alarms and safety shutdown settings for optimal performance and peace of mind. Note: CPU, chipset, and other cooling blocks are sold separately.
$399.99
Owner Satisfaction
4.5
/ 5
Category Rank
866
/ 3605
#866 in Computer System Cooling Parts
Price vs Category Average
+165%
Above average
Model
440
/ EXT-CU
Who it's for
- System builders prioritizing internal airflow and long-term component durability
- Overclockers pushing high-TDP components to their absolute limits
- Power users running multiple high-performance CPUs and GPUs
Who should skip it
- Budget-conscious builders seeking cost-effective cooling solutions
- Users with limited desk space or those needing portable setups
- Quiet-computing enthusiasts sensitive to fan and pump noise
Performance breakdown
Thermal Dissipation
Copper core heat exchanger delivers exceptional heat transfer for demanding PC builds.
Airflow Capacity
High-output 108 CFM fan ensures rapid heat removal from the radiator.
Control Precision
Granular pump and fan speed adjustments allow for fine-tuned acoustic profiles.
Safety Monitoring
Triple-sensor array with automated shutdown provides robust protection against thermal failure.
Build Quality
Durable copper and brass construction ensures long-term reliability for liquid loops.
System Integration
Requires additional component blocks, increasing complexity for first-time liquid cooling users.
Key Specs
Model
EXT-440CU
Materials
Copper/Brass Radiator, Aluminum Chassis, Acrylic Reservoir
Product Dimensions (WxHxD)
6.3 x 3.66 x 11.6 inches (16cm x 9.3cm x 29.5cm)
Product Weight
5.5 lbs (2.5kg)
Airflow
108 CFM
Cooling Method
External Liquid Cooling System with Heat Exchanger
Pump Used
PMP-300
Fan Diameter
120mm
Features
- Integrated PMP-300 pump and copper heat exchanger
- High-speed 108 CFM 120mm fan
- Manual pump speed control
- 10-level fan speed adjustment
- Three-sensor temperature monitoring
- Adjustable temperature alarms and shutdown
- Blue reservoir LED lighting
- Adapted power connection, no AC outlet needed
What customers say
Enthusiasts highly value the Koolance EXT-440CU for its superior thermal performance and robust build quality. The all-copper construction is a key feature, justifying the premium cost by delivering significantly lower operating temperatures than standard cooling loops. This makes it an excellent investment for heavily overclocked systems and demanding multi-GPU setups. While the unit is large and heavy, users accept these physical characteristics given the exceptional cooling efficiency provided. The consensus is that this specialized system offers outstanding functional value through its reliability and top-tier performance, cementing its reputation as a powerful thermal management workhorse.
Know before you buy
No, this is an external cooling system that does not include the necessary water blocks. You will need to purchase separate CPU, chipset, or GPU cooling blocks and the appropriate tubing to complete your loop.
The system uses an adapted power connection that draws power directly from your PC, meaning you do not need to plug it into a separate wall outlet.
Yes, the unit provides significant control with manual pump speed adjustment and 10 distinct fan speed settings, allowing you to balance cooling performance with noise levels.
The EXT-440CU includes three independent temperature sensors that allow you to set custom alarms. You can also configure automatic safety shutdown settings to protect your hardware if temperatures exceed your defined limits.
The reservoir features integrated blue LED lighting. Please note that this is a static blue light and does not support RGB color changing or customization.
The unit measures approximately 6.3 x 3.66 x 11.6 inches. It is designed to be compact, but you should ensure you have enough clearance for proper airflow around the 120mm fan.
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$400