Cooler Master has been trying over the years to squeeze themselves into the all in one liquid cooling market; no spin-offs or re-brands as most AIO manufacturers offer. The in-house design makes these coolers stand out from the competitors offerings, however to be successful the AIO has to be a perfect combination of looks, ease of installation and of course most of all cooling performance at a low noise ratio. The Cooler Master AIO series have been hit and miss; especially the ease of installation was sometimes far fetched. With the Eisberg series Cooler Master has reached new performance heights for the AIO segment. Sadly the Eisberg lineup carried a hefty price tag due to the choice of high grade components. The Nepton series are CM's high end AIO coolers to fill up the gap between the Seidon series and the Eisberg models. Today we review the high end Nepton 280L version and compare it with the previously tested Corsair Hydro H110.