For this I bought the AquaComputer Octo. However the Octo has 8 (duh) PWM fan outputs. The Arctic fans can be daisy chained. So my plan is to daisy chain the three P140 into one, the three P120 into one and the two F140 bottom intake into one. That means that I will use 4 PWM outputs of the OCTO for 9 case fans and one PWM output for the D5 pump. Will this work?
Yes, this works.
Also I am looking at some RGB solutions, my GPU block has 5v DRGB. From what I've see is that Aquacomputer mostly supports 12V RGB, Is there a way to connect the CPU block to the Octo? Maybe together with the RGBpx lighting set for PC case. Or would all that be too much for a single OCTO?
The OCTO has two RGBpx connectors. Each connector can control up to 90 LEDs.
RGBpx supports 5V adressable LEDs that use the WS2812 Protocol.
If the OCTO has a free RGBpx Connector, you can use a RGBpx Cable and an Adapter to 3Pin DRGB to connect your CPU Block to the OCTO.
https://shop.aquacomputer.de/product_inf…roducts_id=3829
https://shop.aquacomputer.de/product_inf…roducts_id=3763
If both RGBpx Connectors are in use, it depends on your existing Lightning Set if you can add the CPU Block or not.
More Information about your Lightning is required to answer this.