Hydro PTM+ 1200W

Finally, someone, had the guts to explore the potential of water cooling PSUs and for the first time to mass produce a good quality (80 PLUS certification) water-cooled PSU that really can bring PC enthusiasts to a whole new level. RGB lighting and sleeved modular cables. Top quality for a top price! This beauty is not cheap... 699 USD!

There is also a Limited Edition (of which I am not sure if ended already) that comes with a standalone water cooling kit to cool the PSU, in case you don't have one already.

I would say it's just the beginning but being able to sustain 600W with zero noise and good efficiency is usually hard. Plus, you have the ability Power Overclock, squeezing an additional 200W (up to 1400W total) if using water cooling.