I have many queries about your AIO
I have many queries about your AIO
They mentioned the same issue elsewhere, suggesting it’s a valid concern. It might be worth purchasing it separately if you need it.
on the bottom of your mainboard there are two fan headers. if you prefer not to use a splitter, connect those two directly for your fans. The CPU_fan headers adjust based on CPU temperature, constantly changing fan speeds. With chassis fan headers, you can create a curve or attach a temperature probe to the header below to control them later. Place the probe inside your radiator for accurate readings. The CPU_optional fan header is typically used for secondary air coolers or VRM fans—usually a small 4x4cm DC fan. For custom water cooling or AIO setups, it often leads to a quieter system. The fan curve should follow after the AIO water temperature, though you can usually just insert a probe into your radiator. In a custom loop, inline temperature sensors are common. Some AIO models now include built-in temperature sensors inside the cold plate.
Thank you for your feedback. It might be helpful to install it elsewhere but the cable doesn't reach from the back and I'm uncertain about the front setup. Even if possible, it could look unprofessional. A cable splitter would be a good option. I'm also considering a fan controller, as I've heard they work well. Would it be compatible with the NZXT Grid+V3?
a cable splitter will carry 2 or more cables for 4 pin PWM connectors, one handles the RPM signal while the rest supply power it receives. a PWM 2 or 3 port splitter follows a standard you can find any labeled as a PWM splitter, and you can also get pwm extenders. alternatively, longer cables work well, or for heavy loads, a PWM hub is recommended to connect directly to the power supply.
I have two additional queries. First, is a fan controller superior to a splitter or has no impact? Second, can I link not just the radiator fans but also the case fans and Corsair SP120 RGB PRO?
It varies depending on the setup. Typically you can link up to ten fans and obtain direct power from the PSU. However, only one fan sends the PWM signal to the chassis fan port. Fans still spin at different RPMs because power is delivered via the RPM signal from a single port on the controller or hub—essentially ranging from 0 to 100%. One fan operates between 500 and 1900 RPM, another runs slower, around 300 to 1200 RPM, while others can reach up to 3000 RPM or more. Delivering a 50% power signal adjusts their speed accordingly—950, 600, or 1500 RPM for example. It makes sense to use a splitter for 2-3 fans of the same model or at least matching speeds. A separate splitter is needed for the 140mm fans since they run slower and should be placed on a different header. Exploring more about fans can reveal some models support up to 16 fans via a controller, still pulling power from one main header. But as with my setup, connecting multiple SATA power connectors to many fans can cause overheating and damage the header over time. The port’s ampere limit also matters—pump or AIO headers tend to handle more current safely.