360° View - Coolermaster Nepton 240M - Water Block Information on Frostytech's test methodology is available here.
The Nepton 240M waterblock stands 48mm tall, with a foot print of 70x75mm. Pump power is supplied by a 4-pin motherboard fan header. The Coolermaster logo is illuminated by white LEDs as a visual indicator of pump status. Both of the 13mm OD 90-degree pipe connections fully swivel, though rather stiffly. The Intel and AMD metal mounting brackets attach with two screws each to the base of the pump head.
The pump head is roughly 70mm square when not including the metal AMD/Intel brackets or tube connections. Including the swivel connections, the head is 85mm across. Behind the superficial bezel cover, the actual waterblock is formed from a single piece of tough grey plastic.
The copper base plate measures ~1.5mm thick and is approximately 63x56mm. Anti-tamper triangular head screws prevented us from taking a close look at the Nepton 240M's micro skived copper plate.

360° View - Coolermaster Nepton 240M - Heat Exchanger Information on Frostytech's test methodology is available here.
	The 28mm thick aluminum heat exchanger used with the Nepton 240M measures 277x120mm in size. It supports a pair of 120mm fans mounted side-by-side.
Mounting holes are provided on both faces of the heat exchanger so two 120mm fans could be mounted on each side, if desired. To connect the heat exchanger to a PC chassis fan vent, the mounting screws can be threaded into the heat exchanger or the heads of the screws Coolermaster supply to install the fans - the heads of these screws are threaded.
	The 13mm O.D. FEP tubing is connected to metal barbs that do not swivel. The FEP tubing is fairly kink-resistant.
	The fill valve is covered by a warranty sticker to prevent end users from contaminating the coolant supply inside.

Base Finish and Flatness

Flipping a heatsink over to inspect the business end is often a simple indicator of overall cooler quality. More practically speaking, a heatsink is in many ways only as effective as the contact it makes with the processor - the flatter and smoother the better. Base finish is one of the criteria that Frostytech measure in the course of evaluating heatsinks, and it involves two distinct aspects. Surface Finish is the first; this is calculated with the aid of Surface Roughness Comparator that has a cross section of common machine surface finishes and their numerical surface roughness equivalents in microinches. The second is Surface Flatness. This is tested with an engineer's straight edge or proven flat surface, in two axes.

The copper base plate of Coolermaster's Nepton 240M waterblock is roughly 1.5mm thick and has a sanded surface finish with a surface roughness of approximately ~32 microinches. The copper base plate is generally flat in one axis and very slightly convex in the other axis.

Next, acoustic measurements and then AMD and Intel synthetic thermal test result charts.