It is recommended to install the radiator at the top of the case for better cooling performance. During installation, the radiator tubes can be positioned either downward or toward the memory side (right side), depending on the internal layout of the case. Both orientations work properly.
When front-mounting the radiator, we recommend positioning the tubes at the bottom whenever possible. This helps reduce the chance of air reaching the pump and may minimize pump noise over time.
For tower air coolers, the fan should generally direct airflow toward the rear exhaust fan of the case. Proper airflow direction helps improve overall cooling performance and system ventilation.