Koolance
Koolance Radiator, 1x120mm 20-FPI Copper
Best compact radiator for custom liquid cooling enthusiasts with limited space.
Enhance your custom PC water cooling loop with this high-quality Koolance 1x120mm radiator, model HX-CU420VS-D. Built with a copper core, it is engineered to deliver approximately 400W of added heat dissipation when paired with a single 120mm fan. The 20 FPI fin density is optimized for efficient cooling in low to mid-range airflow environments. This dual-pass unit features vertical G 1/4 BSP threaded nozzle sockets and includes 30mm mounting screws for straightforward installation. Note that this radiator requires separate adapters and fittings for connection.
$27.99
Owner Satisfaction
4.5
/ 5
Category Rank
866
/ 3605
#866 in Computer System Cooling Parts
Price vs Category Average
-81%
Below average
Model
420
/ HX-CUVS-D
Who it's for
- Gamers pushing high-performance hardware to the limit
- System builders maximizing cooling in tight spaces
- PC enthusiasts designing compact or auxiliary custom loops
Who should skip it
- Owners wanting a low-maintenance, set-and-forget cooling setup
- Users prioritizing a silent, low-noise computing environment
- Budget-conscious builders seeking cost-effective cooling solutions
Performance breakdown
Thermal Dissipation
Copper core construction provides reliable cooling capacity for standard custom loops.
Airflow Efficiency
The 20 FPI density balances performance well with lower-speed fan setups.
Build Durability
Robust brass and copper materials ensure long-term resistance to corrosion.
Installation Ease
Standard G 1/4 threading makes integration into existing loops straightforward.
Compact Compatibility
Slim profile fits easily into smaller cases without sacrificing mounting flexibility.
Flow Dynamics
Dual-pass design maintains consistent coolant circulation for steady heat transfer.
Key Specs
Model
HX-CU420VS-D
Radiator Size
1x120mm
Materials
Copper Fins, Brass Pipes
Heat Dissipation
Approximately 400W
Fin Density
20 FPI
Product Dimensions (WxHxD)
5 x 6.8 x 1.5 inches (12.7cm x 17.2cm x 3.8cm)
Product Weight
1.25 pounds (567g)
Fan Hole Spacing
15mm (0.59")
Features
- Copper core for excellent heat dissipation
- Optimized for low to mid-range airflow
- Dual-pass design for efficient cooling
- Includes necessary mounting screws
- Vertical G 1/4 BSP threaded sockets
- Designed for 1x120mm fan compatibility
What customers say
This compact copper radiator earns high praise within the water-cooling community for its superior thermal performance and robust build quality. Users consistently value the all-copper construction, which ensures excellent heat dissipation, making it ideal for specialized or small builds. The durable finish and clean threading simplify integration into complex cooling loops. A key consideration noted by builders is the 20 FPI density; while this contributes to impressive cooling capacity, it demands pairing with high static pressure fans for optimal results. While a thorough preflush is recommended, the overall sentiment confirms this is a premium component delivering professional grade cooling efficiency where space is limited. It is viewed as a worthwhile investment for reliability.
Know before you buy
This radiator uses standard G 1/4 BSP threaded sockets. You will need to purchase compatible G 1/4 fittings separately to connect your tubing.
Yes. With a fin density of 20 FPI, this unit is specifically optimized to perform efficiently in low to mid-range airflow environments, making it a great choice for quieter cooling setups.
Yes, the radiator includes 30mm mounting screws to help you secure a standard 120mm fan directly to the unit.
When paired with a single 120mm fan, this radiator is engineered to provide approximately 400W of heat dissipation for your custom water cooling loop.
This radiator features a copper core and brass pipes. To prevent galvanic corrosion, it is strongly recommended that you avoid mixing aluminum parts with this copper-based radiator in your cooling loop.
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$28