So I just saw the EK Phoenix CPU cooler which is basicly like a AIO Cooler but modular. I like it, since I dont really want a full custom loop. I also notice they have a block for the 2080 Ti RTX. So it is possible to both watercool the CPU and the GPU with the phoenix.
What I am confused about is connecting both AIO pumps to the motherboard. Since the Phoenix comes with a pump, I would want to use 2 radiators, 1 for the CPU and 1 for the GPU (dual loop). However the motherboard (Asus Apex XI) only has one connection for an AIO pump (like every MB).