Custom Loop Liquid Cooling
Configurator in Portland, United States
Design your custom water cooling loop. Calculate radiator surface area, pump flow rate, coolant delta-T temperature rise, and full component layout for CPU and GPU blocks.
Loop Configuration
Recommended Loop Order
Place the radiator as the last component before the reservoir for coolest fluid to CPU block.
Pump Selection — Delta-T at 150W
| Pump | Flow Rate | Pressure | Coolant Delta-T | Best For |
|---|---|---|---|---|
| D5 Pump (1L/min) | 1 L/min | Low | +2.2°C | Simple single-block loops |
| DDC Pump (1.5L/min)◀ | 1.5 L/min | Medium | +1.4°C | CPU+GPU dual block loops |
| DDC High Speed (2L/min) | 2 L/min | High | +1.1°C | Multi-component high resistance loops |
| Dual D5 (3L/min) | 3 L/min | Very High | +0.7°C | Multi-component high resistance loops |
Coolant Selection Guide
Best thermal, lowest cost. Add biocide.
Easy setup, available in colours. Replace annually.
Premixed, ready to use. Long service life.
Freeze protection for cold climates. Slight thermal penalty.
Custom Water Cooling Loop Design Guide for Portland, United States
Custom liquid cooling systems outperform AIO coolers because they can cover multiple components, use larger radiators, and maintain lower coolant temperatures through higher thermal mass. The key design parameter is radiator surface area — approximately 120mm of radiator per 80–100W of waste heat is the standard guideline. A system with a 150W CPU and 300W GPU running in a full-loop configuration generates 450W total and needs at least a 360mm radiator, ideally a 480mm for adequate headroom.