The expandability of fans and multi-fan combinations

When choosing a CPU cooling fan, scalability and multi-fan combinations are key factors in optimizing heat dissipation performance and system flexibility. By rationally designing the connection method and layout of the fans, the heat dissipation efficiency can be significantly improved and the noise can be reduced. The following analysis is carried out from three dimensions: expansion interface, combination strategy, and actual cases:

First, the expandable design of the fan

Interface expansion capability

PWM one-minute multi-head expansion line: Supports connecting multiple fans to a single motherboard interface to achieve unified speed regulation. For example, the Jiuzhou Fengshen Water Element 360 ARGB water-cooled radiator is equipped with a FAN three-in-one expansion cable, which can connect three fans to the same CPU_FAN interface, simplifying the wiring and reducing the occupation of the motherboard interface.

ARGB hub: Integrates multi-fan lighting control to reduce the occupation of 5V 3-pin interfaces on the motherboard. The Yinxin IceMyst series water-cooled radiator supports the expansion of fans and lights through the ARGB hub and is compatible with devices of different brands.

Modular splicing design

Snap-fit expansion: Some fans support stacking and splicing to enhance heat dissipation for specific areas. For instance, the Yinxin IceMyst water cooling head can be expanded with the IM70-ARGB fan. It covers the power supply, memory and M.2 SSD areas of the motherboard through stacked clips, enhancing the local heat dissipation efficiency.

Compatibility adaptation

Multi-size support: Mainstream cases support 120mm and 140mm fan combinations, while some high-end cases are compatible with 240mm and 360mm cooling radiators. The fan size should be selected according to the specifications of the water cooling position of the chassis to ensure installation compatibility.

Second, the multi-fan combination strategy

Optimal combination of air ducts

Horizontal air duct: Front intake + rear exhaust, suitable for mainstream cases. For example, for the Maxsun B760M Terminator D4 motherboard, the front three fans are connected to SYS_FAN1, and the top and rear fans are connected to SYS_FAN2 to form a horizontal airflow.

Vertical air duct: Air intake at the bottom + exhaust at the top to reduce air flow resistance. Dust-proof nets should be used in combination to prevent dust accumulation.

Fan position and speed control

Adjacent installation is superior to offset installation: Tests of the dual-tower radiator show that the combination of left air intake + middle air outlet or middle air intake + right air outlet has a higher heat dissipation efficiency, and the temperature is 5-6℃ lower than that of offset installation.

Zonal speed regulation: Adjust the speed of fans in different areas independently through BIOS or software. For instance, the fan in the CPU area operates at full speed, while the auxiliary fan in the case runs at a low speed to balance heat dissipation and noise.

Lighting synchronization and expansion

ARGB unified control: Use an ARGB hub to connect multiple fans to achieve lighting synchronization. For example, the Jiuzhou Fengshen Water Element 360 ARGB water-cooled radiator connects the water cooling head and three fans through the six-in-one junction box of the light effect interface, supporting various lighting modes such as single-color static, breathing, and dual-color.

Third, analysis of actual cases and effects

Jiuzhou Fengshen Water Element 360 ARGB water-cooled radiator

Combination method: The water cooling radiator is equipped with three 12cm ARGB fans and supports PWM speed regulation. Connect to the CPU_FAN interface through the FAN three-in-one expansion cable, and connect the lighting effect interface to the six-in-one junction box.

Heat dissipation effect: During the 20-minute FPU single stress extreme test, the CPU temperature remained stable at 49℃, and the noise level was lower than 35dBA, achieving a balance between heat dissipation and noise reduction.

Yinxin IceMyst series water-cooled radiator

Expansion capability: The water cooling head supports the expansion of IM70-ARGB fans to enhance the power supply of the motherboard and the heat dissipation of the memory area. The 120mm fan has a rotational speed of 500-2200 RPM and a maximum air volume of 75.74 CFM, meeting the high-performance requirements.

Lighting control: Multiple fans are connected through the ARGB hub, supporting 320° rotation to point to the designated hot spot area, enhancing the targeted heat dissipation.

The wiring of the fan for the Maxsun B760M Terminator D4 motherboard

Partition control: CPU_FAN is connected to the CPU cooling fan, SYS_FAN1 is connected to the three front fans, SYS_FAN2 is connected to the top and rear fans, and SYS_FAN3 is connected to the two bottom fans. The ARGB1 is connected to the top, rear and CPU fans, while the ARGB2 is connected to the front and bottom fans to achieve zoned lighting and cooling control.

Fourth, suggestions for selection and installation

Motherboard interface matching

Confirm the number of CPU_FAN, SYS_FAN and PUMP_FAN interfaces on the motherboard, and give priority to choosing the interfaces that support PWM speed regulation and ARGB lighting control. For example, the MSI B760M-A WIFI II motherboard provides 2 case fan interfaces, 1 CPU fan interface and 1 water pump interface. The fan connections need to be allocated reasonably.

Selection of fan expansion accessories

PWM one-minute multi-head expansion cable: Suitable for scenarios where multiple fans need to be connected to the same interface, simplifying the wiring.

ARGB Hub: Integrates multi-fan lighting control, reduces the occupation of motherboard interfaces, and enhances the lighting synchronization effect.

Installation Precautions

Fan direction: Ensure that the air intake side faces the interior of the case and the exhaust side faces the outside to avoid reverse airflow.

Dust-proof measures: Install dust-proof nets at the air intake, and regularly clean the fan and heat dissipation fins to prevent dust accumulation from affecting the heat dissipation efficiency.