Back to basic!! Tried again the F12 to have a black scheme, but the temp are worse, so, NOPE, I need to stay with the best fan ever made. ?
Then, I've figured out why my DDC 3.25 PMW rewired to a 4 pin fan connector wasn't changing speed:
These MOFO of EKWB have used a standard wire colour's scheme, black, yellow, blue green, BUT, they have inverted the blue and green.
So the correct PMW wire is the green.
It is enough keeping it between 30 and 50%, the flow is incredible high! So at higher speed actually you can hear sometime splashing the water inside.
Till now, the BEST DDC ever had is the EK MX 3.1 PMW, that I guess is a Laing DDC 1T PMW with different controller.
When my Watercool GPU block arrives I try if the VTX fits (EKWB is sending me a new one) (The GPU block is shorter, aligned with the PCB of the GPU.
BUT to mount it, because higher, I will need M4 screws of 40mm.
I've found space for a drain/fill valve!