Really expected more when i read the title. It's a stretch to call this a "water-cooled machine", when it's just one all-in-one CPU cooler. Water-cooled machine should be a custom loop. It's a lot more hassle, but that's exactly why it's interesting. All-in-one systems are just like traditional air systems with big radiators, the only big difference is that you can move the radiator around.
Custom loops are such a hassle between leak testing, constantly changing the liquid, adding anti-algae additive. I've done many of them when I was really into PC building in the early 2000s (I was even on the FutureMark 3DMark Hall of Fame for a while for some extreme overclocks). The new AIO coolers are extremely performant and a no-brainer cost wise. No harm in trying out the new tech :)
If you have build custom loops, you should really understand the difference. AIO are much closer to traditional air coolers, than to custom-loop water cooling.
Keep an eye on VRM btw. Point of failure in your system right now.