NOOB water-cooling help

[systemviper]

Hi, I have the P3, haven't even opened the box yet, but keep us posted with pics of your build. I am excited to build mine...

The Thermaltake P1 case can only use Mini-ITX boards, From what i have experienced with ITX you won't be doing any real seriously overclocking because of the size of the board
and the heat dissipation because of that board size.

I would just pick out a nice 280 AIO and rock with that, you should get a decent overclock plus it would look very clean since you won't be having to worry about
tubing or fittings, pumps or resi's.

As far as boards go, I like the ROG STRIX Z390-I GAMING

I think i will just use my asus Maximus X Hero (ac) and i already have a nice NZXT 280 AIO to cool a i7-8086k, I feel this rig will keep me gaming for the next 2 years
But I will be using the stand and not a wall mount.

As far as the "difference between these connectors?" I'll leave that for someone else. But I would just stick with a nice AIO since you will be running a ITX...