Just because it's there doesn't mean it has to be used, but paid builders often will just to not receive complaints from customers who say things like 'I paid extra for a case with a fan hub, but you didn't use it, so I did' etc. So a hub is near useless for that.īut many mATX/mITX motherboards only have 2-3 fan hubs, so accommodations are made with splitters/hubs, especially if using multiple fans and liquid cooling. Motherboard temps will usually be in the 40's to 50's and cpu temps at 60+. The fan curves for input fans will be different than exhaust and cpu temps. Once the CPU or GPU starts getting hot, your fan increases its RPM to make the temperatures cooler. This can be caused by playing graphics-intensive games, video editing software, and other CPU-intensive tasks that take a lot of CPU or GPU performance. Can be of use for rads with upto 6 fans in push/pull to keep them all aligned, which is near impossible using seperate headers as those headers are controlled by different sensors in different places, so have different temp readings.īut with different zones (input, output, rad fans etc) you'll want different headers just for that reason. Computer fans gain an increase in speed when there’s high CPU utilization. Uses a single input and splits it to multiple outputs.

Note: The unit in the SpeedFan application itself must be set to Celsius to obtain the correct value. A hub is nothing more than a hardware splitter. SpeedFanScale Default: C Temperature unit for SpeedFanTypeTemperature.

Cpu fan speed